Re: [syzbot] [mm?] BUG: Bad page map (7)
From: syzbot
Date: Sat Sep 09 2023 - 21:48:36 EST
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
6128][ T1] Bluetooth: CMTP socket layer initialized
[ 11.167105][ T1] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 11.168195][ T1] Bluetooth: HIDP socket layer initialized
[ 11.172202][ T1] NET: Registered PF_RXRPC protocol family
[ 11.173221][ T1] Key type rxrpc registered
[ 11.174103][ T1] Key type rxrpc_s registered
[ 11.175373][ T1] NET: Registered PF_KCM protocol family
[ 11.177012][ T1] lec:lane_module_init: lec.c: initialized
[ 11.178099][ T1] mpoa:atm_mpoa_init: mpc.c: initialized
[ 11.179340][ T1] l2tp_core: L2TP core driver, V2.0
[ 11.180274][ T1] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[ 11.181142][ T1] l2tp_ip: L2TP IP encapsulation support (L2TPv3)
[ 11.182523][ T1] l2tp_netlink: L2TP netlink interface
[ 11.183484][ T1] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3)
[ 11.184413][ T1] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3)
[ 11.185606][ T1] NET: Registered PF_PHONET protocol family
[ 11.186593][ T1] 8021q: 802.1Q VLAN Support v1.8
[ 11.200112][ T1] DCCP: Activated CCID 2 (TCP-like)
[ 11.201028][ T1] DCCP: Activated CCID 3 (TCP-Friendly Rate Control)
[ 11.202450][ T1] DCCP is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list
[ 11.204370][ T1] sctp: Hash tables configured (bind 32/56)
[ 11.206695][ T1] NET: Registered PF_RDS protocol family
[ 11.208580][ T1] Registered RDS/infiniband transport
[ 11.209974][ T1] Registered RDS/tcp transport
[ 11.210991][ T1] tipc: Activated (version 2.0.0)
[ 11.211996][ T1] NET: Registered PF_TIPC protocol family
[ 11.213362][ T1] tipc: Started in single node mode
[ 11.215000][ T1] NET: Registered PF_SMC protocol family
[ 11.216427][ T1] 9pnet: Installing 9P2000 support
[ 11.218072][ T1] NET: Registered PF_CAIF protocol family
[ 11.224698][ T1] NET: Registered PF_IEEE802154 protocol family
[ 11.225896][ T1] Key type dns_resolver registered
[ 11.227373][ T1] Key type ceph registered
[ 11.228473][ T1] libceph: loaded (mon/osd proto 15/24)
[ 11.230827][ T1] batman_adv: B.A.T.M.A.N. advanced 2023.3 (compatibility version 15) loaded
[ 11.232604][ T1] openvswitch: Open vSwitch switching datapath
[ 11.235717][ T1] NET: Registered PF_VSOCK protocol family
[ 11.236769][ T1] mpls_gso: MPLS GSO support
[ 11.243298][ T1] start plist test
[ 11.247904][ T1] end plist test
[ 11.253615][ T1] IPI shorthand broadcast: enabled
[ 11.254447][ T1] AVX2 version of gcm_enc/dec engaged.
[ 11.255539][ T1] AES CTR mode by8 optimization enabled
[ 12.602761][ T1] sched_clock: Marking stable (12570027239, 29094014)->(12607351949, -8230696)
[ 12.606252][ T1] registered taskstats version 1
[ 12.616134][ T1] Loading compiled-in X.509 certificates
[ 12.621456][ T1] Loaded X.509 cert 'Build time autogenerated kernel key: 0fcda5d31b9f9e23b67f9531e962fbe56b39254a'
[ 12.627580][ T1] zswap: loaded using pool lzo/zbud
[ 12.790353][ T1] debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers
[ 14.931835][ T1] Key type .fscrypt registered
[ 14.936714][ T1] Key type fscrypt-provisioning registered
[ 14.948499][ T1] kAFS: Red Hat AFS client v0.1 registering.
[ 14.968179][ T1] Btrfs loaded, assert=on, ref-verify=on, zoned=yes, fsverity=yes
[ 14.976514][ T1] Key type big_key registered
[ 14.983726][ T1] Key type encrypted registered
[ 14.988784][ T1] ima: No TPM chip found, activating TPM-bypass!
[ 14.995300][ T1] Loading compiled-in module X.509 certificates
[ 15.004766][ T1] Loaded X.509 cert 'Build time autogenerated kernel key: 0fcda5d31b9f9e23b67f9531e962fbe56b39254a'
[ 15.015603][ T1] ima: Allocated hash algorithm: sha256
[ 15.021319][ T1] ima: No architecture policies found
[ 15.026950][ T1] evm: Initialising EVM extended attributes:
[ 15.032950][ T1] evm: security.selinux (disabled)
[ 15.038150][ T1] evm: security.SMACK64
[ 15.042312][ T1] evm: security.SMACK64EXEC
[ 15.046787][ T1] evm: security.SMACK64TRANSMUTE
[ 15.051729][ T1] evm: security.SMACK64MMAP
[ 15.056388][ T1] evm: security.apparmor (disabled)
[ 15.062008][ T1] evm: security.ima
[ 15.065787][ T1] evm: security.capability
[ 15.072963][ T1] evm: HMAC attrs: 0x1
[ 15.078819][ T1] PM: Magic number: 7:6:660
[ 15.084338][ T1] block ram13: hash matches
[ 15.088945][ T1] tty ptyeb: hash matches
[ 15.095332][ T1] printk: console [netcon0] enabled
[ 15.100612][ T1] netconsole: network logging started
[ 15.106370][ T1] gtp: GTP module loaded (pdp ctx size 104 bytes)
[ 15.113617][ T1] rdma_rxe: loaded
[ 15.118018][ T1] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 15.128407][ T1] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 15.135560][ T27] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 15.139271][ T1] clk: Disabling unused clocks
[ 15.146516][ T27] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
[ 15.149815][ T1] ALSA device list:
[ 15.149823][ T1] #0: Dummy 1
[ 15.165921][ T1] #1: Loopback 1
[ 15.169835][ T1] #2: Virtual MIDI Card 1
[ 15.176161][ T1] md: Waiting for all devices to be available before autodetect
[ 15.184171][ T1] md: If you don't use raid, use raid=noautodetect
[ 15.190736][ T1] md: Autodetecting RAID arrays.
[ 15.195704][ T1] md: autorun ...
[ 15.199351][ T1] md: ... autorun DONE.
[ 15.221012][ T1] EXT4-fs (sda1): mounted filesystem 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 ro with ordered data mode. Quota mode: none.
[ 15.233646][ T1] VFS: Mounted root (ext4 filesystem) readonly on device 8:1.
[ 15.242842][ T1] devtmpfs: mounted
[ 15.334482][ T1] Freeing unused kernel image (initmem) memory: 2888K
[ 15.341305][ T1] Write protecting the kernel read-only data: 196608k
[ 15.351574][ T1] Freeing unused kernel image (rodata/data gap) memory: 1744K
[ 15.456635][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 15.470328][ T1] Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found
[ 15.480231][ T1] Run /sbin/init as init process
[ 15.485161][ T1] with arguments:
[ 15.488944][ T1] /sbin/init
[ 15.492542][ T1] with environment:
[ 15.496505][ T1] HOME=/
[ 15.499813][ T1] TERM=linux
[ 15.503335][ T1] spec_store_bypass_disable=prctl
[ 15.508699][ T1] BOOT_IMAGE=/boot/bzImage
[ 15.527423][ T1] ------------[ cut here ]------------
[ 15.533025][ T1] kernel BUG at mm/page_table_check.c:121!
[ 15.538936][ T1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[ 15.544990][ T1] CPU: 1 PID: 1 Comm: init Not tainted 6.5.0-syzkaller-12921-ga3c57ab79a06-dirty #0
[ 15.554359][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
[ 15.564598][ T1] RIP: 0010:page_table_check_set+0x592/0x860
[ 15.570694][ T1] Code: ff e8 22 c9 9a ff 48 ff cb e9 5d fd ff ff e8 15 c9 9a ff 48 ff cb 49 89 df e9 dd fd ff ff e8 05 c9 9a ff 0f 0b e8 fe c8 9a ff <0f> 0b e8 f7 c8 9a ff 0f 0b e8 f0 c8 9a ff 0f 0b e8 e9 c8 9a ff 0f
[ 15.590306][ T1] RSP: 0000:ffffc90000067738 EFLAGS: 00010293
[ 15.596503][ T1] RAX: ffffffff81f2ddf2 RBX: ffff88801aa3cec0 RCX: ffff888015e60000
[ 15.604482][ T1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 15.612475][ T1] RBP: 0000000000000001 R08: ffffffff81f2dc65 R09: 1ffff110035479d8
[ 15.620471][ T1] R10: dffffc0000000000 R11: ffffed10035479d9 R12: ffff88801aa3ce80
[ 15.628441][ T1] R13: 0000000000000020 R14: 1ffffffff23ec5fc R15: 0000000000000000
[ 15.636433][ T1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[ 15.645376][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.651953][ T1] CR2: 00007fade5d58d20 CR3: 000000001b89b000 CR4: 00000000003506e0
[ 15.659929][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 15.667892][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 15.675879][ T1] Call Trace:
[ 15.679152][ T1] <TASK>
[ 15.682078][ T1] ? __die_body+0x8b/0xe0
[ 15.686493][ T1] ? die+0xa1/0xd0
[ 15.690250][ T1] ? do_trap+0x153/0x380
[ 15.694486][ T1] ? page_table_check_set+0x592/0x860
[ 15.699880][ T1] ? do_error_trap+0x1dc/0x2c0
[ 15.704670][ T1] ? page_table_check_set+0x592/0x860
[ 15.710059][ T1] ? do_int3+0x50/0x50
[ 15.714134][ T1] ? handle_invalid_op+0x34/0x40
[ 15.719095][ T1] ? page_table_check_set+0x592/0x860
[ 15.724474][ T1] ? exc_invalid_op+0x33/0x50
[ 15.729226][ T1] ? asm_exc_invalid_op+0x1a/0x20
[ 15.734259][ T1] ? page_table_check_set+0x405/0x860
[ 15.739663][ T1] ? page_table_check_set+0x592/0x860
[ 15.745064][ T1] ? page_table_check_set+0x592/0x860
[ 15.750435][ T1] ? page_table_check_set+0x592/0x860
[ 15.755814][ T1] __page_table_check_ptes_set+0x220/0x280
[ 15.761624][ T1] ? __page_table_check_pud_clear+0xb0/0xb0
[ 15.767533][ T1] ? folio_add_file_rmap_range+0x55e/0x840
[ 15.773354][ T1] set_pte_range+0x8fa/0x920
[ 15.777936][ T1] ? xas_find+0x339/0xaa0
[ 15.782274][ T1] ? mm_counter_file+0x2c0/0x2c0
[ 15.787206][ T1] ? next_uptodate_folio+0xa5d/0xb10
[ 15.792473][ T1] filemap_map_pages+0xc23/0x1560
[ 15.797501][ T1] ? filemap_read_folio+0x770/0x770
[ 15.802683][ T1] ? __lock_acquire+0x7f70/0x7f70
[ 15.807696][ T1] ? pte_offset_map_nolock+0x137/0x1e0
[ 15.813228][ T1] ? kasan_save_stack+0x4f/0x60
[ 15.818073][ T1] ? __kasan_record_aux_stack+0xad/0xc0
[ 15.823601][ T1] ? call_rcu+0x167/0xa70
[ 15.827909][ T1] ? task_work_run+0x24a/0x300
[ 15.832656][ T1] ? exit_to_user_mode_prepare+0xb1/0x140
[ 15.838445][ T1] ? filemap_read_folio+0x770/0x770
[ 15.843648][ T1] handle_mm_fault+0x47dd/0x6200
[ 15.848599][ T1] ? numa_migrate_prep+0x380/0x380
[ 15.853694][ T1] ? rcu_is_watching+0x15/0xb0
[ 15.858436][ T1] ? rcu_is_watching+0x15/0xb0
[ 15.863180][ T1] ? lock_release+0xbf/0x9d0
[ 15.867781][ T1] ? mtree_range_walk+0x6a0/0x7e0
[ 15.872813][ T1] ? __lock_acquire+0x7f70/0x7f70
[ 15.877831][ T1] ? lock_vma_under_rcu+0x2cf/0x6c0
[ 15.883024][ T1] ? __init_rwsem+0x160/0x160
[ 15.887692][ T1] ? mas_walk+0x224/0x260
[ 15.892006][ T1] ? lock_vma_under_rcu+0x5ab/0x6c0
[ 15.897207][ T1] ? rcu_is_watching+0x15/0xb0
[ 15.901978][ T1] exc_page_fault+0x455/0x860
[ 15.906664][ T1] asm_exc_page_fault+0x26/0x30
[ 15.911500][ T1] RIP: 0033:0x7fade5d58d20
[ 15.915921][ T1] Code: Unable to access opcode bytes at 0x7fade5d58cf6.
[ 15.922916][ T1] RSP: 002b:00007fffac073220 EFLAGS: 00010202
[ 15.928965][ T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 15.936940][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 15.944904][ T1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 15.952888][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 15.960847][ T1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 15.968987][ T1] </TASK>
[ 15.972178][ T1] Modules linked in:
[ 15.976221][ T1] ---[ end trace 0000000000000000 ]---
[ 15.981728][ T1] RIP: 0010:page_table_check_set+0x592/0x860
[ 15.987742][ T1] Code: ff e8 22 c9 9a ff 48 ff cb e9 5d fd ff ff e8 15 c9 9a ff 48 ff cb 49 89 df e9 dd fd ff ff e8 05 c9 9a ff 0f 0b e8 fe c8 9a ff <0f> 0b e8 f7 c8 9a ff 0f 0b e8 f0 c8 9a ff 0f 0b e8 e9 c8 9a ff 0f
[ 16.007555][ T1] RSP: 0000:ffffc90000067738 EFLAGS: 00010293
[ 16.013643][ T1] RAX: ffffffff81f2ddf2 RBX: ffff88801aa3cec0 RCX: ffff888015e60000
[ 16.021641][ T1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 16.029615][ T1] RBP: 0000000000000001 R08: ffffffff81f2dc65 R09: 1ffff110035479d8
[ 16.037570][ T1] R10: dffffc0000000000 R11: ffffed10035479d9 R12: ffff88801aa3ce80
[ 16.045595][ T1] R13: 0000000000000020 R14: 1ffffffff23ec5fc R15: 0000000000000000
[ 16.053591][ T1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[ 16.062632][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.069231][ T1] CR2: 00007fade5d58cf6 CR3: 000000001b89b000 CR4: 00000000003506e0
[ 16.077285][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 16.085270][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 16.093277][ T1] Kernel panic - not syncing: Fatal exception
[ 16.099524][ T1] Kernel Offset: disabled
[ 16.103871][ T1] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=<nil>)
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/syzkaller/.cache/go-build"
GOENV="/syzkaller/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/syzkaller/jobs-2/linux/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/syzkaller/jobs-2/linux/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct";
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.20.1"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build283487419=/tmp/go-build -gno-record-gcc-switches"
git status (err=<nil>)
HEAD detached at 8bc9053e8
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:32: run command via tools/syz-env for best compatibility, see:
Makefile:33: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8bc9053e88dacf57f5ce550da040d31895eb9626 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230904-115818'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8bc9053e88dacf57f5ce550da040d31895eb9626 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230904-115818'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8bc9053e88dacf57f5ce550da040d31895eb9626 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230904-115818'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"8bc9053e88dacf57f5ce550da040d31895eb9626\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=14f77e1c680000
Tested on:
commit: a3c57ab7 iov_iter: Kunit tests for page extraction
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=50ac7dadde9e1c0e
dashboard link: https://syzkaller.appspot.com/bug?extid=55cc72f8cc3a549119df
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=15f413fc680000