I already attached an apport log to this report.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1852655
Title:
kernel BUG at /build/linux-hwe-dEW6RG/linux-hwe-4.15.0/fs/inode.c:509!
Status in linux package in Ubuntu:
Confirmed
Bug description:
We have had this problem happen 3 times in the last 5 months. Each time it
happens, soon after, processes start getting stuck in IOWAIT and eventually we
have to reboot the machine to get things working again. The system was running
for years without problems as a VMWare guest running Ubuntu 14.04. In 9/2018 it
was upgraded to Ubuntu 16.04 with a 4.4 kernel. Then in 4/2019 we installed
linux-generic-hwe-16.04 to get the 4.15 kernel and it was migrated to a hyper-v
server. The first crash was logged on July 29 2019, the second on Sept 17 2019,
and the most recent on Nov 1 2019.
ubuntu-bug linux reports "Problem in linux-image-4.15.0-67-generic This is
not an official Ubuntu package." but it is the kernel package apt received from
Ubuntu's servers.
Nov 1 11:33:59 localhost kernel: [520860.078388] ------------[ cut here
]------------
Nov 1 11:33:59 localhost kernel: [520860.078390] kernel BUG at
/build/linux-hwe-dEW6RG/linux-hwe-4.15.0/fs/inode.c:509!
Nov 1 11:33:59 localhost kernel: [520860.080005] invalid opcode: 0000 [#1]
SMP PTI
Nov 1 11:33:59 localhost kernel: [520860.080005] Modules linked in:
input_leds serio_raw intel_rapl_perf i2c_piix4 hyperv_fb joydev mac_hid ib_iser
rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi lp parport autofs4 btrfs zstd_compress raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear hid_generic hid_hyperv hyperv_keyboard
hv_storvsc hv_utils ptp scsi_transport_fc hid hv_netvsc pps_core crc32_pclmul
pcbc aesni_intel aes_i586 crypto_simd cryptd psmouse hv_vmbus pata_acpi floppy
Nov 1 11:33:59 localhost kernel: [520860.080005] CPU: 0 PID: 41 Comm:
kswapd0 Not tainted 4.15.0-67-generic #76~16.04.1-Ubuntu
Nov 1 11:33:59 localhost kernel: [520860.080005] Hardware name: Microsoft
Corporation Virtual Machine/Virtual Machine, BIOS 090007 05/18/2018
Nov 1 11:33:59 localhost kernel: [520860.080005] EIP: clear_inode+0x88/0xb0
Nov 1 11:33:59 localhost kernel: [520860.080005] EFLAGS: 00010002 CPU: 0
Nov 1 11:33:59 localhost kernel: [520860.080005] EAX: 00000002 EBX: cb4d1160
ECX: cb4d125c EDX: 00000000
Nov 1 11:33:59 localhost kernel: [520860.080005] ESI: cb4d125c EDI: cb4d1218
EBP: f5cd3d98 ESP: f5cd3d90
Nov 1 11:33:59 localhost kernel: [520860.080005] DS: 007b ES: 007b FS: 00d8
GS: 00e0 SS: 0068
Nov 1 11:33:59 localhost kernel: [520860.080005] CR0: 80050033 CR2: 09bdcb80
CR3: 2acfe000 CR4: 003406f0
Nov 1 11:33:59 localhost kernel: [520860.080005] DR0: 00000000 DR1: 00000000
DR2: 00000000 DR3: 00000000
Nov 1 11:33:59 localhost kernel: [520860.080005] DR6: fffe0ff0 DR7: 00000400
Nov 1 11:33:59 localhost kernel: [520860.080005] Call Trace:
Nov 1 11:33:59 localhost kernel: [520860.080005] ext4_clear_inode+0x17/0x80
Nov 1 11:33:59 localhost kernel: [520860.080005] ext4_evict_inode+0x94/0x560
Nov 1 11:33:59 localhost kernel: [520860.080005] evict+0xa9/0x180
Nov 1 11:33:59 localhost kernel: [520860.080005] dispose_list+0x34/0x50
Nov 1 11:33:59 localhost kernel: [520860.080005] prune_icache_sb+0x47/0x70
Nov 1 11:33:59 localhost kernel: [520860.080005] ? iput+0x1e0/0x1e0
Nov 1 11:33:59 localhost kernel: [520860.080005]
super_cache_scan+0x109/0x170
Nov 1 11:33:59 localhost kernel: [520860.080005]
shrink_slab.part.55+0x1bb/0x3f0
Nov 1 11:33:59 localhost kernel: [520860.080005] shrink_slab+0x3a/0x50
Nov 1 11:33:59 localhost kernel: [520860.080005] shrink_node+0xed/0x2e0
Nov 1 11:33:59 localhost kernel: [520860.080005] kswapd+0x289/0x680
Nov 1 11:33:59 localhost kernel: [520860.080005] kthread+0xd8/0x110
Nov 1 11:33:59 localhost kernel: [520860.080005] ?
mem_cgroup_shrink_node+0x160/0x160
Nov 1 11:33:59 localhost kernel: [520860.080005] ? kthread_bind+0x30/0x30
Nov 1 11:33:59 localhost kernel: [520860.080005] ret_from_fork+0x2e/0x38
Nov 1 11:33:59 localhost kernel: [520860.080005] Code: c0 00 00 00 8d 93 c0
00 00 00 39 c2 75 3d c7 43 70 60 00 00 00 5b 5e 5d c3 8d 76 00 8d bc 27 00 00
00 00 0f 0b 8d b6 00 00 00 00 <0f> 0b 8d b6 00 00 00 00 0f 0b 8d b6 00 00 00 00
0f 0b 8d b6 00
Nov 1 11:33:59 localhost kernel: [520860.080005] EIP: clear_inode+0x88/0xb0
SS:ESP: 0068:f5cd3d90
Nov 1 11:33:59 localhost kernel: [520860.080005] ---[ end trace
c32eec6b685002fb ]---
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