Memory corruption (redzone overwritten) names_cache?

From: Jakub Jankowski
Date: Thu Sep 12 2019 - 19:40:20 EST


Hi,

We're getting some random memory corruption on an AWS EC2 instance with 4.19.x kernels. I've tried 4.19.19, 4.19.52, but the results below are from the most recent (4.19.72). For debugging I enabled KASAN+slub_debug, but TBH, I can't make heads or tails from these.

Without slub_debug, the host reboots within couple of minutes of uptime. With slub_debug it survives a bit longer, but eventually all sorts of issues manifest (including: reboot; ps not being able to read some processes' /proc/<pid>/cmdline while /proc/<pid>/stack shows acct_collect()->down_read(), etc).

Upon multiple tests, the slab I most often seen pop up as first detected as corrupted was names_cache.
What is really weird is that multiple times I saw redzone being overwritten by the same content, which looks like part of 'sessions.py'Â Python's 'requests' module.

Any debugging hints would be greatly appreciated.


Command line: BOOT_IMAGE=(hd0,msdos2)/vmlinuz ro root=/dev/xvda5 console=tty0 console=ttyS0,9600n8 crashkernel=512M-2G:64M,2G-:128M kmemleak=on slub_debug=FZPU slub_nomerge
(...)
[ 262.957418] =============================================================================
[ 262.957423] BUG vm_area_struct (Tainted: G B O ): Redzone overwritten
[ 262.957424] -----------------------------------------------------------------------------

[ 262.957427] INFO: 0x00000000b91cc681-0x0000000098bd5238. First byte 0x6e instead of 0xcc
[ 262.957433] INFO: Allocated in vm_area_dup+0x1e/0x180 age=6117 cpu=0 pid=8187
[ 262.957438] kmem_cache_alloc+0x1a4/0x1d0
[ 262.957439] vm_area_dup+0x1e/0x180
[ 262.957441] copy_process.part.4+0x2fa9/0x6cd0
[ 262.957443] _do_fork+0x151/0x7a0
[ 262.957446] do_syscall_64+0x9b/0x290
[ 262.957452] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 262.957455] INFO: Freed in qlist_free_all+0x37/0xd0 age=7431 cpu=0 pid=8521
[ 262.957457] quarantine_reduce+0x1a2/0x210
[ 262.957458] kasan_kmalloc+0x95/0xc0
[ 262.957460] kmem_cache_alloc+0xc6/0x1d0
[ 262.957463] getname_flags+0xba/0x510
[ 262.957465] user_path_at_empty+0x1d/0x40
[ 262.957468] vfs_statx+0xb9/0x140
[ 262.957470] __se_sys_newstat+0x7c/0xd0
[ 262.957472] do_syscall_64+0x9b/0x290
[ 262.957474] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 262.957476] INFO: Slab 0x00000000ca532806 objects=30 used=24 fp=0x000000006ce6da86 flags=0x2ffff0000008101
[ 262.957477] INFO: Object 0x000000005eb7e26b @offset=8 fp=0x00000000ac807fa7

[ 262.957480] Redzone 00000000b91cc681: 6e 73 2e 70 79 5c 22 2c ns.py\",
[ 262.957482] Object 000000005eb7e26b: 20 6c 69 6e 65 20 36 34 36 2c 20 69 6e 20 73 65 line 646, in se
[ 262.957484] Object 000000007d5d4673: 6e 64 5c 6e 20 20 20 20 72 20 3d 20 61 64 61 70 nd\n r = adap
[ 262.957485] Object 00000000a3cf6db1: 74 65 72 2e 73 65 6e 64 28 72 65 71 75 65 73 74 ter.send(request
[ 262.957487] Object 00000000d8b14cdd: 2c 20 2a 2a 6b 77 61 72 00 00 00 00 00 00 00 00 , **kwar........
[ 262.957489] Object 000000005eca0928: 40 97 5a 73 83 88 ff ff 25 00 00 00 00 00 00 80 @.Zs....%.......
[ 262.957491] Object 00000000592ffbd7: 71 00 00 00 00 00 00 00 e0 c8 22 6d 83 88 ff ff q........."m....
[ 262.957492] Object 0000000084c88ae5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 262.957494] Object 00000000ea6d1cb3: 83 00 00 00 00 00 00 00 80 c0 fd 5a 83 88 ff ff ...........Z....
[ 262.957495] Object 00000000a236617c: 80 c0 fd 5a 83 88 ff ff 00 00 00 00 00 00 00 00 ...Z............
[ 262.957497] Object 0000000091c7956c: 00 3a 94 b0 ff ff ff ff 75 00 00 00 00 00 00 00 .:......u.......
[ 262.957499] Object 00000000216cef35: c0 85 cc 6a 83 88 ff ff 00 00 00 00 00 00 00 00 ...j............
[ 262.957500] Object 00000000e0fd506c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 262.957502] Redzone 00000000f5906e86: cc cc cc cc cc cc cc cc ........
[ 262.957503] Padding 0000000053d79574: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
[ 262.957507] CPU: 3 PID: 11769 Comm: ps Kdump: loaded Tainted: G B O 4.19.72_3upstreamdbg #1
[ 262.957508] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 262.957509] Call Trace:
[ 262.957516] dump_stack+0x9a/0xf0
[ 262.957519] check_bytes_and_report.cold.24+0x3f/0x6b
[ 262.957521] check_object+0x17c/0x280
[ 262.957524] free_debug_processing+0x105/0x2a0
[ 262.957526] ? qlist_free_all+0x37/0xd0
[ 262.957527] ? qlist_free_all+0x37/0xd0
[ 262.957529] __slab_free+0x218/0x3b0
[ 262.957533] ? __free_pages_ok+0x62f/0x840
[ 262.957536] ? _raw_spin_unlock_irqrestore+0x2b/0x40
[ 262.957537] ? qlist_free_all+0x37/0xd0
[ 262.957541] ? trace_hardirqs_on+0x35/0x140
[ 262.957543] ? qlist_free_all+0x37/0xd0
[ 262.957544] qlist_free_all+0x4c/0xd0
[ 262.957546] quarantine_reduce+0x1a2/0x210
[ 262.957549] ? getname_flags+0xba/0x510
[ 262.957550] kasan_kmalloc+0x95/0xc0
[ 262.957553] ? getname_flags+0xba/0x510
[ 262.957555] kmem_cache_alloc+0xc6/0x1d0
[ 262.957557] getname_flags+0xba/0x510
[ 262.957561] ? task_work_run+0xdf/0x180
[ 262.957567] do_sys_open+0x149/0x300
[ 262.957572] ? filp_open+0x50/0x50
[ 262.957575] ? do_syscall_64+0x18/0x290
[ 262.957579] do_syscall_64+0x9b/0x290
[ 262.957583] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 262.957586] RIP: 0033:0x7f5b8719e40e
[ 262.957591] Code: 25 00 00 41 00 3d 00 00 41 00 74 48 48 8d 05 f9 62 0d 00 8b 00 85 c0 75 69 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 0f 87 a6 00 00 00 48 8b 4c 24 28 64 48 33 0c 25
[ 262.957593] RSP: 002b:00007ffcec0bbac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 262.957598] RAX: ffffffffffffffda RBX: 00007f5b8728e958 RCX: 00007f5b8719e40e
[ 262.957599] RDX: 0000000000000000 RSI: 00007ffcec0bbb40 RDI: 00000000ffffff9c
[ 262.957600] RBP: 00007f5b8728e950 R08: 00007f5b87288d46 R09: 00007ffcec0bb4b0
[ 262.957602] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcec0bbb40
[ 262.957603] R13: 00000000007b4d90 R14: 0000000000000020 R15: 0000000000000000
[ 262.957606] FIX vm_area_struct: Restoring 0x00000000b91cc681-0x0000000098bd5238=0xcc

[ 262.957608] FIX vm_area_struct: Object at 0x000000005eb7e26b not freed
[ 262.957612] kasan: CONFIG_KASAN_INLINE enabled
[ 262.962707] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 262.973006] general protection fault: 0000 [#1] SMP KASAN PTI
[ 262.978375] CPU: 3 PID: 11769 Comm: ps Kdump: loaded Tainted: G B O 4.19.72_3upstreamdbg #1
[ 262.987937] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 262.993305] RIP: 0010:qlist_free_all+0x80/0xd0
[ 262.996830] Code: df 48 85 db 75 db 48 89 f0 4c 01 f0 72 54 4c 89 fa 48 2b 15 82 d0 5a 02 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 60 d0 5a 02 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb a2 49
[ 263.013354] RSP: 0018:ffff8882f3cefd48 EFLAGS: 00010203
[ 263.017696] RAX: 00d0c45f95b9a580 RBX: 0000000000000000 RCX: ffffffffae6cad40
[ 263.023538] RDX: 0000777f80000000 RSI: 343620656e696c20 RDI: 0000000000000000
[ 263.029706] RBP: 343620656e696c20 R08: ffffed106fd5be97 R09: ffffed106fd5be96
[ 263.036338] R10: ffffed106fd5be96 R11: ffff88837eadf4b7 R12: ffffffffae8edc17
[ 263.042388] R13: ffff8882f3cefd80 R14: 0000000080000000 R15: ffffffff80000000
[ 263.048173] FS: 00007f5b870b1740(0000) GS:ffff88837eac0000(0000) knlGS:0000000000000000
[ 263.054883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 263.057753] CR2: 00000000007c0c68 CR3: 000000035b8b0005 CR4: 00000000001606e0
[ 263.062110] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 263.066477] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 263.071453] Call Trace:
[ 263.073312] quarantine_reduce+0x1a2/0x210
[ 263.076307] ? getname_flags+0xba/0x510
[ 263.078948] kasan_kmalloc+0x95/0xc0
[ 263.081357] ? getname_flags+0xba/0x510
[ 263.084200] kmem_cache_alloc+0xc6/0x1d0
[ 263.086942] getname_flags+0xba/0x510
[ 263.089460] ? task_work_run+0xdf/0x180
[ 263.092193] do_sys_open+0x149/0x300
[ 263.094717] ? filp_open+0x50/0x50
[ 263.097150] ? do_syscall_64+0x18/0x290
[ 263.099872] do_syscall_64+0x9b/0x290
[ 263.102388] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 263.105832] RIP: 0033:0x7f5b8719e40e
[ 263.108292] Code: 25 00 00 41 00 3d 00 00 41 00 74 48 48 8d 05 f9 62 0d 00 8b 00 85 c0 75 69 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 0f 87 a6 00 00 00 48 8b 4c 24 28 64 48 33 0c 25
[ 263.121749] RSP: 002b:00007ffcec0bbac0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 263.126863] RAX: ffffffffffffffda RBX: 00007f5b8728e958 RCX: 00007f5b8719e40e
[ 263.131685] RDX: 0000000000000000 RSI: 00007ffcec0bbb40 RDI: 00000000ffffff9c
[ 263.136512] RBP: 00007f5b8728e950 R08: 00007f5b87288d46 R09: 00007ffcec0bb4b0
[ 263.141399] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcec0bbb40
[ 263.146308] R13: 00000000007b4d90 R14: 0000000000000020 R15: 0000000000000000
[ 263.151119] Modules linked in: xfrm6_mode_tunnel softdog vhost_net vhost tap openvswitch nsh xt_condition(O) xt_bpf xt_nfacct ipt_rpfilter bpfilter nf_nat_sip nf_conntrack_sip nf_nat_h323 nf_conntrack_h323 ip6t_ipv6header ip6t_rt ip6t_eui64 ip6t_frag ip6t_mh ip6t_hbh ip6t_ah ip6t_REJECT nf_reject_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables ebt_ip6 ip_set_hash_net ip_set_hash_ip ip_set xt_u32 xt_time xt_tcpmss xt_string xt_statistic xt_state xt_realm xt_quota xt_policy xt_pkttype xt_physdev xt_multiport xt_mac xt_limit xt_length xt_iprange xt_helper xt_esp xt_dscp xt_dccp xt_conntrack xt_connlimit nf_conncount xt_connbytes xt_comment xt_cluster xt_TRACE xt_TCPOPTSTRIP xt_TCPMSS xt_NFQUEUE xt_NFLOG xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY sch_tbf sch_sfb sch_red sch_qfq sch_prio sch_mqprio
[ 263.203404] sch_ingress sch_htb sch_gred sch_choke sch_cbq nfnetlink_cttimeout nf_nat_tftp nf_nat_snmp_basic asn1_decoder nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_ipv6 nf_nat_ftp nf_nat_amanda nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sane nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda iptable_raw iptable_nat iptable_mangle iptable_filter ipt_ah ipt_REJECT ipt_MASQUERADE ipt_ECN ipt_CLUSTERIP ipip ifb em_u32 em_text em_nbyte em_meta em_cmp ebtable_nat ebtable_filter ebtable_broute ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 cls_u32 cls_tcindex
[ 263.257550] cls_route cls_fw cls_cgroup cls_basic arptable_filter arpt_mangle arp_tables act_police act_pedit act_nat act_mirred act_ipt act_gact pcc_cpufreq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel ixgbevf i2c_piix4 intel_rapl_perf
[ 263.273126] ---[ end trace 4a14396e6b248e3f ]---
[ 263.276936] RIP: 0010:qlist_free_all+0x80/0xd0
[ 263.280735] Code: df 48 85 db 75 db 48 89 f0 4c 01 f0 72 54 4c 89 fa 48 2b 15 82 d0 5a 02 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 60 d0 5a 02 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb a2 49
[ 263.297123] RSP: 0018:ffff8882f3cefd48 EFLAGS: 00010203
[ 263.301935] RAX: 00d0c45f95b9a580 RBX: 0000000000000000 RCX: ffffffffae6cad40
[ 263.307822] RDX: 0000777f80000000 RSI: 343620656e696c20 RDI: 0000000000000000
[ 263.313679] RBP: 343620656e696c20 R08: ffffed106fd5be97 R09: ffffed106fd5be96
[ 263.319433] R10: ffffed106fd5be96 R11: ffff88837eadf4b7 R12: ffffffffae8edc17
[ 263.325115] R13: ffff8882f3cefd80 R14: 0000000080000000 R15: ffffffff80000000
[ 263.330946] FS: 00007f5b870b1740(0000) GS:ffff88837eac0000(0000) knlGS:0000000000000000
[ 263.337597] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 263.342332] CR2: 00000000007c0c68 CR3: 000000035b8b0005 CR4: 00000000001606e0
[ 263.347350] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 263.352227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
(...)
[ 307.139653] =============================================================================
[ 307.144271] BUG names_cache (Tainted: G B D O ): Redzone overwritten
[ 307.148280] -----------------------------------------------------------------------------

[ 307.153261] INFO: 0x000000001d2ecfa4-0x000000002a22a890. First byte 0x6e instead of 0xcc
[ 307.157848] INFO: Allocated in getname_flags+0xba/0x510 age=4369 cpu=0 pid=11772
[ 307.161947] kmem_cache_alloc+0x1a4/0x1d0
[ 307.164241] getname_flags+0xba/0x510
[ 307.166368] user_path_at_empty+0x1d/0x40
[ 307.168701] vfs_statx+0xb9/0x140
[ 307.170717] __se_sys_newstat+0x7c/0xd0
[ 307.172982] do_syscall_64+0x9b/0x290
[ 307.175125] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 307.177979] INFO: Freed in qlist_free_all+0x37/0xd0 age=4370 cpu=0 pid=11772
[ 307.182209] quarantine_reduce+0x1a2/0x210
[ 307.184868] kasan_kmalloc+0x95/0xc0
[ 307.187184] kmem_cache_alloc+0xc6/0x1d0
[ 307.189732] getname_flags+0xba/0x510
[ 307.192068] user_path_at_empty+0x1d/0x40
[ 307.194650] vfs_statx+0xb9/0x140
[ 307.196821] __se_sys_newstat+0x7c/0xd0
[ 307.199406] do_syscall_64+0x9b/0x290
[ 307.201916] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 307.205643] INFO: Slab 0x00000000071e61e6 objects=7 used=6 fp=0x00000000ae2f1e0c flags=0x2ffff0000008101
[ 307.212340] INFO: Object 0x0000000029ff60d9 @offset=64 fp=0x00000000525e3571

[ 307.217672] Redzone 000000001d2ecfa4: 6e 73 2e 70 79 5c 22 2c 20 6c 69 6e 65 20 36 34 ns.py\", line 64
[ 307.224248] Redzone 0000000019afa6b8: 36 2c 20 69 6e 20 73 65 6e 64 5c 6e 20 20 20 20 6, in send\n
[ 307.230709] Redzone 000000006e1958f4: 72 20 3d 20 61 64 61 70 74 65 72 2e 73 65 6e 64 r = adapter.send
[ 307.237255] Redzone 000000002cfdad55: 28 72 65 71 75 65 73 74 2c 20 2a 2a 6b 77 61 72 (request, **kwar
[ 307.243769] Object 0000000029ff60d9: 40 47 9e 5c 83 88 ff ff 40 be 77 02 00 00 00 00 @G.\....@.w.....
[ 307.249758] Object 000000007c05b8ad: 00 00 00 00 6b 6b 6b 6b 00 00 00 00 00 00 00 00 ....kkkk........
[ 307.256292] Object 000000003c27c064: 2f 6f 70 74 2f 4f 53 41 47 70 6d 6f 6e 2f 6c 69 /opt/OSAGpmon/li
[ 307.262715] Object 0000000069f20b8f: 62 2f 4e 65 74 2f 49 50 2e 70 6d 00 00 00 00 00 b/Net/IP.pm.....
[ 307.269096] Object 0000000042d7882f: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.275649] Object 000000003b7b6941: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.282184] Object 00000000fe5ff8f2: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.288430] Object 00000000b56d40c9: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.294531] Object 000000002fe598b6: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.300656] Object 00000000d0e72570: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.307338] Object 000000002d3efd2e: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.315481] Object 000000009dd4b99f: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.323242] Object 00000000b1feef78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.330056] Object 00000000f3960085: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.336504] Object 000000001e37161a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.342602] Object 00000000f2d92361: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.348767] Object 0000000022351192: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.355124] Object 000000008f893258: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.361220] Object 00000000300b78fd: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.367426] Object 0000000051f24bbb: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.373756] Object 0000000083bde3d9: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.381097] Object 00000000d9d100b5: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.387323] Object 000000003ee0873d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.393653] Object 00000000b64903d5: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.401595] Object 000000007225d6f3: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.408112] Object 000000006b53efc1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.414222] Object 0000000012fbc488: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.420396] Object 00000000e9eb9844: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.428116] Object 0000000086e41de1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.436173] Object 0000000076a949df: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.444604] Object 00000000ae0dec44: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.452689] Object 00000000024ab661: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.460856] Object 000000009d475ad2: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.468905] Object 0000000004f78267: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.477688] Object 00000000e62ff8d1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.485703] Object 0000000088713e3d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 307.493726] Object 00000000a9368135: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
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[ 308.514025] Object 000000009abf3009: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.520834] Object 0000000075ed740d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.527662] Object 000000003d1f2f4c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.534523] Object 000000003cc7f3f6: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.541456] Object 00000000d3f918d5: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.548388] Object 00000000df9307ab: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.555254] Object 00000000f93826b4: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.562085] Object 000000005fb343a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.568936] Object 000000005dad0b94: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.575929] Object 0000000003049af0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.582788] Object 000000005831a996: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.589553] Object 0000000043da6189: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.596410] Object 0000000017326f98: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.603213] Object 00000000dd270209: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.609942] Object 00000000f745f437: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.617496] Object 000000008822777a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.625284] Object 000000002cf552d7: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.632825] Object 000000007f7f0498: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.640889] Object 000000001034683d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.649000] Object 000000007b46d828: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.656874] Object 000000004e055246: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.664988] Object 0000000042074305: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.673053] Object 000000005203f3d2: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.681042] Object 00000000c5ff3bf1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.689142] Object 0000000089e53bd0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.697233] Object 0000000056b9686e: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.707172] Object 00000000c292b303: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.715207] Object 00000000fb7177f7: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.723360] Object 00000000c4959417: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.731267] Object 0000000045790fe1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.739313] Object 00000000aeba7e4d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.747457] Object 000000002e7ebce9: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.755312] Object 000000004f25d974: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.763556] Object 00000000760cc051: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.771686] Object 000000005f2ac704: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.779627] Object 000000000a6a6b41: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.787690] Object 0000000074580d46: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.795825] Object 00000000b47fba88: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.803762] Object 00000000bc73dc78: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.811778] Object 00000000b776e10b: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.819909] Object 0000000036725f6c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.827832] Object 000000004790848d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.835918] Object 000000006d2afa17: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.844035] Object 000000008faea528: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.851997] Object 00000000da0ada39: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.860093] Object 00000000418c8207: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.868229] Object 00000000bfc37df8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.876277] Object 000000007029bbc3: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.884360] Object 00000000849badd8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.893050] Object 000000005b3619d4: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.901062] Object 000000008bbb001e: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.909058] Object 00000000eeb5b28a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.917211] Object 00000000d5ae2a95: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.925273] Object 0000000030985d80: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.933359] Object 0000000053480c8c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.941546] Object 000000005b33e767: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.949484] Object 00000000939af4b5: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.957573] Object 000000001f4a95d2: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.965802] Object 00000000d9aa53ba: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.973943] Object 0000000055b3b900: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.982142] Object 00000000eac6cc50: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.990794] Object 00000000550f2266: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 308.999072] Object 00000000e7974ad7: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.007861] Object 000000002d394c40: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.016075] Object 000000008c50910a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.024478] Object 000000002d60db08: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.032926] Object 00000000f4c4160d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.041336] Object 00000000c027146c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.049650] Object 00000000c7da39ef: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.057711] Object 00000000d0ad21e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.065845] Object 00000000f809ef6b: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.073819] Object 00000000d4cc2cd0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.081963] Object 00000000445d6b05: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.089909] Object 00000000f991101d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.097788] Object 00000000de83d96c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.105866] Object 00000000fa2acbfa: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.114022] Object 0000000016b28d35: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.121712] Object 00000000580f966c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.129805] Object 000000000153cb7b: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.137960] Object 0000000088fcbc6c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 309.145534] Object 0000000093987c62: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 309.153683] Redzone 0000000057ed140d: cc cc cc cc cc cc cc cc ........
[ 309.161265] Padding 000000005a9b402c: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 309.169393] Padding 00000000f67c467d: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 309.177451] Padding 000000006b61ac26: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 309.185591] CPU: 1 PID: 6003 Comm: redis-server Kdump: loaded Tainted: G B D O 4.19.72_3upstreamdbg #1
[ 309.194668] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 309.199561] Call Trace:
[ 309.201678] dump_stack+0x9a/0xf0
[ 309.204456] check_bytes_and_report.cold.24+0x3f/0x6b
[ 309.208554] check_object+0x17c/0x280
[ 309.211583] free_debug_processing+0x105/0x2a0
[ 309.215204] ? qlist_free_all+0x37/0xd0
[ 309.218357] ? qlist_free_all+0x37/0xd0
[ 309.221504] __slab_free+0x218/0x3b0
[ 309.224450] ? __free_pages_ok+0x62f/0x840
[ 309.227804] ? _raw_spin_unlock_irqrestore+0x2b/0x40
[ 309.231834] ? qlist_free_all+0x37/0xd0
[ 309.234996] ? trace_hardirqs_on+0x35/0x140
[ 309.238440] ? qlist_free_all+0x37/0xd0
[ 309.241607] qlist_free_all+0x4c/0xd0
[ 309.244682] quarantine_reduce+0x1a2/0x210
[ 309.248101] ? getname_flags+0xba/0x510
[ 309.251282] kasan_kmalloc+0x95/0xc0
[ 309.254298] ? getname_flags+0xba/0x510
[ 309.257467] kmem_cache_alloc+0xc6/0x1d0
[ 309.260690] getname_flags+0xba/0x510
[ 309.263805] do_sys_open+0x149/0x300
[ 309.266760] ? filp_open+0x50/0x50
[ 309.269591] ? do_syscall_64+0x18/0x290
[ 309.272773] do_syscall_64+0x9b/0x290
[ 309.275909] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 309.280046] RIP: 0033:0x7fd116808b7e
[ 309.283065] Code: 89 54 24 08 e8 a3 f4 ff ff 8b 74 24 0c 48 8b 3c 24 41 89 c0 44 8b 54 24 08 b8 01 01 00 00 89 f2 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 30 44 89 c7 89 44 24 08 e8 ce f4 ff ff 8b 44
[ 309.299289] RSP: 002b:00007ffd93eb6030 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
[ 309.305350] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fd116808b7e
[ 309.311030] RDX: 0000000000000000 RSI: 00007ffd93eb60a0 RDI: 00000000ffffff9c
[ 309.316797] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006
[ 309.322349] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001000
[ 309.328059] R13: 0000000000000002 R14: 00007fd116222080 R15: 0000000000000001
[ 309.333764] FIX names_cache: Restoring 0x000000001d2ecfa4-0x000000002a22a890=0xcc

[ 309.341073] FIX names_cache: Object at 0x0000000029ff60d9 not freed
[ 313.708858] eth1: dropped over-mtu packet: 1612 > 1500
[ 315.307429] eth1: dropped over-mtu packet: 2515 > 1500
[ 320.378201] =============================================================================
[ 320.383907] BUG vm_area_struct (Tainted: G B D O ): Redzone overwritten
[ 320.388905] -----------------------------------------------------------------------------

[ 320.394971] INFO: 0x00000000c07ff6f2-0x00000000922a1eef. First byte 0x6e instead of 0xcc
[ 320.400704] INFO: Allocated in vm_area_dup+0x1e/0x180 age=4236 cpu=3 pid=8727
[ 320.405838] kmem_cache_alloc+0x1a4/0x1d0
[ 320.408727] vm_area_dup+0x1e/0x180
[ 320.411223] copy_process.part.4+0x2fa9/0x6cd0
[ 320.414277] _do_fork+0x151/0x7a0
[ 320.416538] do_syscall_64+0x9b/0x290
[ 320.419068] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 320.422569] INFO: Freed in qlist_free_all+0x37/0xd0 age=4608 cpu=0 pid=11841
[ 320.427782] quarantine_reduce+0x1a2/0x210
[ 320.430698] kasan_kmalloc+0x95/0xc0
[ 320.433246] kmem_cache_alloc+0xc6/0x1d0
[ 320.435966] vm_area_alloc+0x1b/0xf0
[ 320.438305] mmap_region+0x580/0x1190
[ 320.440673] do_mmap+0x675/0xe20
[ 320.444058] vm_mmap_pgoff+0x163/0x1b0
[ 320.446515] ksys_mmap_pgoff+0x23e/0x590
[ 320.449162] do_syscall_64+0x9b/0x290
[ 320.451625] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 320.454960] INFO: Slab 0x00000000017620bc objects=30 used=7 fp=0x0000000035357a9a flags=0x2ffff0000008101
[ 320.461606] INFO: Object 0x000000004f79ecae @offset=8 fp=0x000000000da6908e

[ 320.466679] Redzone 00000000c07ff6f2: 6e 73 2e 70 79 5c 22 2c ns.py\",
[ 320.472736] Object 000000004f79ecae: 20 6c 69 6e 65 20 36 34 36 2c 20 69 6e 20 73 65 line 646, in se
[ 320.479647] Object 0000000037f06e68: 6e 64 5c 6e 20 20 20 20 72 20 3d 20 61 64 61 70 nd\n r = adap
[ 320.486250] Object 00000000787a17aa: 74 65 72 2e 73 65 6e 64 28 72 65 71 75 65 73 74 ter.send(request
[ 320.492925] Object 000000004e0d15b6: 2c 20 2a 2a 6b 77 61 72 00 00 00 00 00 00 00 00 , **kwar........
[ 320.499449] Object 000000009bdfffbc: 00 f9 f9 3d 83 88 ff ff 25 00 00 00 00 00 00 80 ...=....%.......
[ 320.508725] Object 00000000a1744f46: 71 00 00 00 00 00 00 00 c0 86 64 72 83 88 ff ff q.........dr....
[ 320.515302] Object 0000000025612fc3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 320.521944] Object 00000000c7e51536: 01 00 00 00 00 00 00 00 80 c0 34 62 83 88 ff ff ..........4b....
[ 320.528711] Object 00000000c60fa612: 80 c0 34 62 83 88 ff ff 00 00 00 00 00 00 00 00 ..4b............
[ 320.535411] Object 0000000069262720: 00 3a 94 b0 ff ff ff ff 00 00 00 00 00 00 00 00 .:..............
[ 320.542063] Object 00000000acc3bec2: 40 21 af 63 83 88 ff ff 00 00 00 00 00 00 00 00 @!.c............
[ 320.548806] Object 0000000021f1d4e2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 320.555363] Redzone 000000006f8ed805: cc cc cc cc cc cc cc cc ........
[ 320.561546] Padding 00000000abbb7ef9: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
[ 320.567794] CPU: 2 PID: 12306 Comm: ssh_to_self.sh Kdump: loaded Tainted: G B D O 4.19.72_3upstreamdbg #1
[ 320.575622] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 320.579747] Call Trace:
[ 320.581411] dump_stack+0x9a/0xf0
[ 320.583692] check_bytes_and_report.cold.24+0x3f/0x6b
[ 320.587121] check_object+0x17c/0x280
[ 320.589672] free_debug_processing+0x105/0x2a0
[ 320.592796] ? qlist_free_all+0x37/0xd0
[ 320.595353] ? qlist_free_all+0x37/0xd0
[ 320.597909] __slab_free+0x218/0x3b0
[ 320.600262] ? _raw_spin_unlock_irqrestore+0x2b/0x40
[ 320.603539] ? qlist_free_all+0x37/0xd0
[ 320.606123] ? trace_hardirqs_on+0x35/0x140
[ 320.608957] ? qlist_free_all+0x37/0xd0
[ 320.611603] qlist_free_all+0x4c/0xd0
[ 320.614192] quarantine_reduce+0x1a2/0x210
[ 320.617110] ? vm_area_alloc+0x1b/0xf0
[ 320.619731] kasan_kmalloc+0x95/0xc0
[ 320.622218] ? vm_area_alloc+0x1b/0xf0
[ 320.624775] kmem_cache_alloc+0xc6/0x1d0
[ 320.627391] vm_area_alloc+0x1b/0xf0
[ 320.629809] mmap_region+0x580/0x1190
[ 320.632283] ? vm_brk+0x10/0x10
[ 320.634519] ? security_mmap_addr+0x3f/0x70
[ 320.637357] ? get_unmapped_area+0x1c7/0x350
[ 320.640333] do_mmap+0x675/0xe20
[ 320.642536] ? ecryptfs_fill_auth_tok+0x310/0x310
[ 320.645701] ? security_mmap_file+0xcc/0x140
[ 320.648564] vm_mmap_pgoff+0x163/0x1b0
[ 320.651087] ? vma_is_stack_for_current+0x90/0x90
[ 320.654261] ? do_dup2+0x3f0/0x3f0
[ 320.656610] ? vfs_statx_fd+0x44/0x80
[ 320.659136] ? __se_sys_newfstat+0xba/0xd0
[ 320.661984] ksys_mmap_pgoff+0x23e/0x590
[ 320.664775] ? find_mergeable_anon_vma+0x280/0x280
[ 320.667948] ? trace_hardirqs_off_caller+0x3b/0x140
[ 320.671172] ? do_syscall_64+0x18/0x290
[ 320.673934] do_syscall_64+0x9b/0x290
[ 320.676398] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 320.679836] RIP: 0033:0x7f6a0347c5a3
[ 320.682557] Code: 54 41 89 d4 55 48 89 fd 53 4c 89 cb 48 85 ff 74 4e 49 89 d9 45 89 f8 45 89 f2 44 89 e2 4c 89 ee 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 65 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66 2e 0f
[ 320.697479] RSP: 002b:00007ffc21a28e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[ 320.702540] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a0347c5a3
[ 320.707497] RDX: 0000000000000001 RSI: 00000000000085c4 RDI: 0000000000000000
[ 320.712463] RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000000
[ 320.717185] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000001
[ 320.722031] R13: 00000000000085c4 R14: 0000000000000002 R15: 0000000000000004
[ 320.726842] FIX vm_area_struct: Restoring 0x00000000c07ff6f2-0x00000000922a1eef=0xcc

[ 320.732784] FIX vm_area_struct: Object at 0x000000004f79ecae not freed
[ 320.737953] kasan: CONFIG_KASAN_INLINE enabled
[ 320.741662] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 320.747529] general protection fault: 0000 [#2] SMP KASAN PTI
[ 320.752324] CPU: 2 PID: 12306 Comm: ssh_to_self.sh Kdump: loaded Tainted: G B D O 4.19.72_3upstreamdbg #1
[ 320.762087] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 320.767338] RIP: 0010:qlist_free_all+0x80/0xd0
[ 320.771141] Code: df 48 85 db 75 db 48 89 f0 4c 01 f0 72 54 4c 89 fa 48 2b 15 82 d0 5a 02 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 60 d0 5a 02 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb a2 49
[ 320.787525] RSP: 0018:ffff888375c9fb00 EFLAGS: 00010203
[ 320.791949] RAX: 00d0c45f95b9a580 RBX: 0000000000000000 RCX: ffffffffb03cd983
[ 320.797841] RDX: 0000777f80000000 RSI: 343620656e696c20 RDI: 0000000000000000
[ 320.803963] RBP: 343620656e696c20 R08: fffffbfff64886ed R09: fffffbfff64886ec
[ 320.809897] R10: fffffbfff64886ec R11: 0000000000000003 R12: ffffffffae8edc17
[ 320.815595] R13: ffff888375c9fb38 R14: 0000000080000000 R15: ffffffff80000000
[ 320.820564] FS: 0000000000000000(0000) GS:ffff88837ea80000(0000) knlGS:0000000000000000
[ 320.826646] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 320.830822] CR2: 00007ffc21a28fa4 CR3: 000000035c05a003 CR4: 00000000001606e0
[ 320.836025] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 320.841145] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 320.846493] Call Trace:
[ 320.848419] quarantine_reduce+0x1a2/0x210
[ 320.851531] ? vm_area_alloc+0x1b/0xf0
[ 320.854182] kasan_kmalloc+0x95/0xc0
[ 320.856560] ? vm_area_alloc+0x1b/0xf0
[ 320.859093] kmem_cache_alloc+0xc6/0x1d0
[ 320.861728] vm_area_alloc+0x1b/0xf0
[ 320.864206] mmap_region+0x580/0x1190
[ 320.866728] ? vm_brk+0x10/0x10
[ 320.868919] ? security_mmap_addr+0x3f/0x70
[ 320.871809] ? get_unmapped_area+0x1c7/0x350
[ 320.874751] do_mmap+0x675/0xe20
[ 320.876934] ? ecryptfs_fill_auth_tok+0x310/0x310
[ 320.880110] ? security_mmap_file+0xcc/0x140
[ 320.882949] vm_mmap_pgoff+0x163/0x1b0
[ 320.885571] ? vma_is_stack_for_current+0x90/0x90
[ 320.888794] ? do_dup2+0x3f0/0x3f0
[ 320.891225] ? vfs_statx_fd+0x44/0x80
[ 320.893791] ? __se_sys_newfstat+0xba/0xd0
[ 320.896672] ksys_mmap_pgoff+0x23e/0x590
[ 320.899360] ? find_mergeable_anon_vma+0x280/0x280
[ 320.902816] ? trace_hardirqs_off_caller+0x3b/0x140
[ 320.905843] ? do_syscall_64+0x18/0x290
[ 320.908184] do_syscall_64+0x9b/0x290
[ 320.910453] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 320.914018] RIP: 0033:0x7f6a0347c5a3
[ 320.916544] Code: 54 41 89 d4 55 48 89 fd 53 4c 89 cb 48 85 ff 74 4e 49 89 d9 45 89 f8 45 89 f2 44 89 e2 4c 89 ee 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 65 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66 2e 0f
[ 320.929816] RSP: 002b:00007ffc21a28e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[ 320.934899] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a0347c5a3
[ 320.939780] RDX: 0000000000000001 RSI: 00000000000085c4 RDI: 0000000000000000
[ 320.944638] RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000000
[ 320.949315] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000001
[ 320.954102] R13: 00000000000085c4 R14: 0000000000000002 R15: 0000000000000004
[ 320.958769] Modules linked in: xfrm6_mode_tunnel softdog vhost_net vhost tap openvswitch nsh xt_condition(O) xt_bpf xt_nfacct ipt_rpfilter bpfilter nf_nat_sip nf_conntrack_sip nf_nat_h323 nf_conntrack_h323 ip6t_ipv6header ip6t_rt ip6t_eui64 ip6t_frag ip6t_mh ip6t_hbh ip6t_ah ip6t_REJECT nf_reject_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables ebt_ip6 ip_set_hash_net ip_set_hash_ip ip_set xt_u32 xt_time xt_tcpmss xt_string xt_statistic xt_state xt_realm xt_quota xt_policy xt_pkttype xt_physdev xt_multiport xt_mac xt_limit xt_length xt_iprange xt_helper xt_esp xt_dscp xt_dccp xt_conntrack xt_connlimit nf_conncount xt_connbytes xt_comment xt_cluster xt_TRACE xt_TCPOPTSTRIP xt_TCPMSS xt_NFQUEUE xt_NFLOG xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY sch_tbf sch_sfb sch_red sch_qfq sch_prio sch_mqprio
[ 321.010148] sch_ingress sch_htb sch_gred sch_choke sch_cbq nfnetlink_cttimeout nf_nat_tftp nf_nat_snmp_basic asn1_decoder nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_ipv6 nf_nat_ftp nf_nat_amanda nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sane nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda iptable_raw iptable_nat iptable_mangle iptable_filter ipt_ah ipt_REJECT ipt_MASQUERADE ipt_ECN ipt_CLUSTERIP ipip ifb em_u32 em_text em_nbyte em_meta em_cmp ebtable_nat ebtable_filter ebtable_broute ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 cls_u32 cls_tcindex
[ 321.058925] cls_route cls_fw cls_cgroup cls_basic arptable_filter arpt_mangle arp_tables act_police act_pedit act_nat act_mirred act_ipt act_gact pcc_cpufreq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel ixgbevf i2c_piix4 intel_rapl_perf
[ 321.073628] ---[ end trace 4a14396e6b248e40 ]---
[ 321.077512] RIP: 0010:qlist_free_all+0x80/0xd0
[ 321.081001] Code: df 48 85 db 75 db 48 89 f0 4c 01 f0 72 54 4c 89 fa 48 2b 15 82 d0 5a 02 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 60 d0 5a 02 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 eb a2 49
[ 321.096100] RSP: 0018:ffff8882f3cefd48 EFLAGS: 00010203
[ 321.100187] RAX: 00d0c45f95b9a580 RBX: 0000000000000000 RCX: ffffffffae6cad40
[ 321.105462] RDX: 0000777f80000000 RSI: 343620656e696c20 RDI: 0000000000000000
[ 321.110235] RBP: 343620656e696c20 R08: ffffed106fd5be97 R09: ffffed106fd5be96
[ 321.116855] R10: ffffed106fd5be96 R11: ffff88837eadf4b7 R12: ffffffffae8edc17
[ 321.121992] R13: ffff8882f3cefd80 R14: 0000000080000000 R15: ffffffff80000000
[ 321.126896] FS: 0000000000000000(0000) GS:ffff88837ea80000(0000) knlGS:0000000000000000
[ 321.132353] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 321.136398] CR2: 00007ffc21a28fa4 CR3: 000000035c05a003 CR4: 00000000001606e0
[ 321.141482] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 321.146430] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400



[ 507.460860] =============================================================================
[ 507.467842] BUG filp (Tainted: G B D O ): Redzone overwritten
[ 507.473148] -----------------------------------------------------------------------------

[ 507.480248] INFO: 0x000000007d719b7b-0x000000006c66d62d. First byte 0x6e instead of 0xbb
[ 507.485978] INFO: Allocated in __alloc_file+0x2b/0x340 age=8119 cpu=0 pid=13295
[ 507.490788] kmem_cache_alloc+0x1a4/0x1d0
[ 507.493819] __alloc_file+0x2b/0x340
[ 507.496558] alloc_empty_file+0x43/0x100
[ 507.499572] path_openat+0x114/0x3f20
[ 507.502356] do_filp_open+0x17c/0x250
[ 507.505189] do_sys_open+0x1db/0x300
[ 507.507943] do_syscall_64+0x9b/0x290
[ 507.510787] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 507.514637] INFO: Freed in qlist_free_all+0x37/0xd0 age=601 cpu=0 pid=8601
[ 507.519935] quarantine_reduce+0x1a2/0x210
[ 507.523255] kasan_kmalloc+0x95/0xc0
[ 507.525968] kmem_cache_alloc+0xc6/0x1d0
[ 507.528944] sock_alloc_inode+0x18/0x220
[ 507.531905] alloc_inode+0x59/0x150
[ 507.534589] new_inode_pseudo+0xc/0xd0
[ 507.537534] sock_alloc+0x3c/0x260
[ 507.540134] __sock_create+0x85/0x4a0
[ 507.542902] __sys_socket+0xd6/0x1b0
[ 507.545597] __x64_sys_socket+0x6f/0xb0
[ 507.548493] do_syscall_64+0x9b/0x290
[ 507.551358] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 507.555158] INFO: Slab 0x00000000eb7c0300 objects=23 used=23 fp=0x (null) flags=0x2ffff0000008100
[ 507.562760] INFO: Object 0x0000000000f72fb5 @offset=64 fp=0x0000000044f349d6

[ 507.568674] Redzone 000000007d719b7b: 6e 73 2e 70 79 5c 22 2c 20 6c 69 6e 65 20 36 34 ns.py\", line 64
[ 507.576141] Redzone 000000008a448ace: 36 2c 20 69 6e 20 73 65 6e 64 5c 6e 20 20 20 20 6, in send\n
[ 507.583755] Redzone 0000000079af1bc6: 72 20 3d 20 61 64 61 70 74 65 72 2e 73 65 6e 64 r = adapter.send
[ 507.591277] Redzone 00000000d20be79e: 28 72 65 71 75 65 73 74 2c 20 2a 2a 6b 77 61 72 (request, **kwar
[ 507.598796] Object 0000000000f72fb5: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.606108] Object 000000006d9c0410: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.613503] Object 00000000869bb10b: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.621000] Object 0000000021024cb0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.628431] Object 000000004bd5b924: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.635810] Object 00000000baa6db8b: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.643062] Object 00000000b0129e9f: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.650360] Object 000000008081619a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.657773] Object 000000007c9879c4: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.665107] Object 000000009903c776: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.672513] Object 0000000065122075: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.679983] Object 00000000edf96763: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.687599] Object 0000000010aaaa9a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.695094] Object 000000004bdab3e7: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.702421] Object 000000004e6d9293: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 507.709983] Object 00000000a13b86f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 507.717470] Redzone 000000008b2fdb56: bb bb bb bb bb bb bb bb ........
[ 507.724729] Padding 0000000021a7a02a: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 507.732247] Padding 000000000e257ed9: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 507.739868] Padding 00000000938b1d71: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 507.747632] CPU: 1 PID: 8601 Comm: snmpd Kdump: loaded Tainted: G B D O 4.19.72_3upstreamdbg #1
[ 507.755901] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 507.760662] Call Trace:
[ 507.762601] dump_stack+0x9a/0xf0
[ 507.765159] check_bytes_and_report.cold.24+0x3f/0x6b
[ 507.769065] check_object+0x17c/0x280
[ 507.771927] ? __alloc_file+0x2b/0x340
[ 507.774908] alloc_debug_processing+0x105/0x170
[ 507.778485] ___slab_alloc+0x4ba/0x530
[ 507.781441] ? __alloc_file+0x2b/0x340
[ 507.784376] ? __d_alloc+0x2a/0xa30
[ 507.787110] ? __alloc_file+0x2b/0x340
[ 507.790040] ? __alloc_file+0x2b/0x340
[ 507.792973] __slab_alloc+0x48/0x90
[ 507.795737] ? __alloc_file+0x2b/0x340
[ 507.798695] kmem_cache_alloc+0x1a4/0x1d0
[ 507.801844] __alloc_file+0x2b/0x340
[ 507.804616] alloc_empty_file+0x43/0x100
[ 507.807590] alloc_file+0x57/0x3d0
[ 507.810168] alloc_file_pseudo+0x15f/0x220
[ 507.813234] ? sock_init_data+0xbb2/0xfe0
[ 507.816315] ? alloc_file+0x3d0/0x3d0
[ 507.819217] ? m_stop+0x20/0x20
[ 507.821692] ? __alloc_fd+0x178/0x410
[ 507.824584] sock_alloc_file+0x39/0x160
[ 507.827478] __sys_socket+0x102/0x1b0
[ 507.829618] ? trace_hardirqs_on+0x35/0x140
[ 507.832059] ? move_addr_to_kernel+0x20/0x20
[ 507.834561] ? trace_hardirqs_off_caller+0x3b/0x140
[ 507.837397] ? do_syscall_64+0x18/0x290
[ 507.839663] __x64_sys_socket+0x6f/0xb0
[ 507.841911] do_syscall_64+0x9b/0x290
[ 507.844066] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 507.846904] RIP: 0033:0x7fa5f2669bf7
[ 507.848984] Code: 73 01 c3 48 8b 0d 99 02 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 69 02 0c 00 f7 d8 64 89 01 48
[ 507.860003] RSP: 002b:00007ffeb7319288 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
[ 507.864251] RAX: ffffffffffffffda RBX: 00007ffeb7319381 RCX: 00007fa5f2669bf7
[ 507.868214] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
[ 507.872141] RBP: 00007ffeb73192c0 R08: 000000000165dd9e R09: 0000000000000000
[ 507.876186] R10: 00007fa5f2544740 R11: 0000000000000246 R12: 00000000ffffffff
[ 507.880208] R13: 0000000000008933 R14: 0000000000000000 R15: 00007ffeb7319386
[ 507.884198] FIX filp: Restoring 0x000000007d719b7b-0x000000006c66d62d=0xbb

[ 507.888502] FIX filp: Marking all objects used

Best regards,
ÂJakub.