Re: kernel BUG at fs/inode.c:531!

[Jan Kara]

Hello!

On Wed 27-05-20 21:05:55, nirinA raseliarison wrote:
> i hit again this bug with:
> 
> $ cat /proc/version
> Linux version 5.7.0-rc7.20200525 (nirina@xxxxxxxxxxxxx) (gcc version
> 10.1.0 (GCC), GNU ld version 2.33.1-slack15) #1 SMP Mon May 25
> 02:49:28 EAT 2020

Thanks for report! I see this didn't get any reply. Can you still hit this
issue with 5.8? If yes, what workload do you run on the machine to trigger
this? Can you send contents of /proc/mounts please? Thanks!

								Honza

> 
> 
> [99390.044690] ------------[ cut here ]------------
> [99390.044695] kernel BUG at fs/inode.c:531!
> [99390.044702] invalid opcode: 0000 [#1] SMP PTI
> [99390.044705] CPU: 0 PID: 149 Comm: kswapd0 Not tainted 5.7.0-rc7.20200525 #1
> [99390.044706] Hardware name: To be filled by O.E.M. To be filled by
> O.E.M./ONDA H61V Ver:4.01, BIOS 4.6.5 01/07/2013
> [99390.044712] RIP: 0010:clear_inode+0x75/0x80
> [99390.044714] Code: a8 20 74 2a a8 40 75 28 48 8b 83 28 01 00 00 48
> 8d 93 28 01 00 00 48 39 c2 75 17 48 c7 83 98 00 00 00 60 00 00 00 5b
> c3 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 90 0f 1f 44 00 00 53 ba 48 02
> 00 00
> [99390.044716] RSP: 0018:ffffc900004c7b50 EFLAGS: 00010006
> [99390.044717] RAX: 0000000000000000 RBX: ffff88808c5f9e38 RCX: 0000000000000000
> [99390.044718] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88808c5f9fb8
> [99390.044719] RBP: ffff88808c5f9e38 R08: ffffffffffffffff R09: ffffc900004c7cd8
> [99390.044720] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88808c5f9fb0
> [99390.044721] R13: ffff888215658000 R14: ffff888215658070 R15: 000000000000014c
> [99390.044723] FS:  0000000000000000(0000) GS:ffff888217600000(0000)
> knlGS:0000000000000000
> [99390.044724] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [99390.044725] CR2: 00000006f9004000 CR3: 00000001511da001 CR4: 00000000001606f0
> [99390.044726] Call Trace:
> [99390.044732]  ext4_clear_inode+0x16/0x80
> [99390.044736]  ext4_evict_inode+0x58/0x4c0
> [99390.044738]  evict+0xbf/0x180
> [99390.044740]  prune_icache_sb+0x7e/0xb0
> [99390.044743]  super_cache_scan+0x161/0x1e0
> [99390.044746]  do_shrink_slab+0x146/0x290
> [99390.044749]  shrink_slab+0xac/0x2a0
> [99390.044752]  ? __switch_to_asm+0x40/0x70
> [99390.044754]  shrink_node+0x16f/0x660
> [99390.044757]  balance_pgdat+0x2cf/0x5b0
> [99390.044759]  kswapd+0x1dc/0x3a0
> [99390.044762]  ? __schedule+0x217/0x710
> [99390.044764]  ? wait_woken+0x80/0x80
> [99390.044766]  ? balance_pgdat+0x5b0/0x5b0
> [99390.044768]  kthread+0x118/0x130
> [99390.044770]  ? kthread_create_worker_on_cpu+0x70/0x70
> [99390.044772]  ret_from_fork+0x35/0x40
> [99390.044773] Modules linked in: 8021q garp stp mrp llc rtl8192cu
> rtl_usb rtl8192c_common rtlwifi mac80211 cfg80211 uas usb_storage
> nct6775 hwmon_vid ipv6 rfkill nf_defrag_ipv6 snd_pcm_oss snd_mixer_oss
> fuse hid_generic usbhid hid snd_hda_codec_hdmi snd_hda_codec_realtek
> snd_hda_codec_generic i2c_dev coretemp hwmon i915 x86_pkg_temp_thermal
> intel_powerclamp kvm_intel kvm i2c_algo_bit irqbypass drm_kms_helper
> evdev r8169 snd_hda_intel syscopyarea snd_intel_dspcfg realtek
> snd_hda_codec libphy crc32_pclmul sysfillrect serio_raw sysimgblt
> snd_hwdep fb_sys_fops snd_hda_core drm snd_pcm fan thermal
> drm_panel_orientation_quirks snd_timer intel_gtt 8250 agpgart snd
> 8250_base ehci_pci serial_core button ehci_hcd video soundcore
> i2c_i801 lpc_ich mfd_core mei_me mei loop
> [99390.044800] ---[ end trace 2ca57858c52a0ad4 ]---
> 
> --
> nirinA
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR