[LU-16013] SLES15 SP4 client BUG: kernel NULL pointer dereference

• Type: Bug
• Resolution: Duplicate
• Priority: Critical
• Affects Version/s: Lustre 2.15.1
• Environment: SLES15 SP4 client
• Severity: 3
• Assignee: Patrick Farrell
• Reporter: Jian Yu

Description

While testing SLES15 SP4 client support patch https://review.whamcloud.com/47924 with kernel 5.14.21-150400.22.1 on Lustre b2_15 branch, sanity test 0d hung.

Console log on client:

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 0 P4D 0
T21801] Oops: 0010 [#1] PREEMPT SMP PTI
CPU: 0 PID: 21801 Comm: tee Kdump: loaded Tainted: G           OE     N 5.14.21-150400.22-default #1 SLE15-SP4 0b6a6578ade2de5c4a0b916095dff44f76ef1704
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffa052c33b3938 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff8dd956c55298 RDI: ffffe011c04cc500
RBP: ffff8dd954416f90 R08: 000000000000041d R09: 0000000000000bf3
R10: ffffa052c33b3940 R11: 0000000000000000 R12: ffff8dd956c55298
R13: 0000000000000000 R14: ffffe011c04cc500 R15: 0000000000000000
FS:  00007f1eaeb68740(0000) GS:ffff8dd9ffc00000(0000) knlGS:0000000000000000 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000021102001 CR4: 00000000001706f0
Call Trace:
 <TASK>
 vvp_set_pagevec_dirty+0x171/0x3e0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 write_commit_callback+0x5f/0x1a0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 osc_io_commit_async+0x226/0x530 [osc 0cd30f43a98bab30cdcc8c80790581cd345e8072]
 ? vvp_set_pagevec_dirty+0x3e0/0x3e0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 ? vvp_set_pagevec_dirty+0x3e0/0x3e0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 cl_io_commit_async+0x8b/0x160 [obdclass 627f410ec5b64ecc7835c12c3881f5ffa2886afa]
 lov_io_commit_async+0x101/0x5a0 [lov 85fdc8bde1ce6ed86b2cd3053a19a75843ff306a]
 ? vvp_set_pagevec_dirty+0x3e0/0x3e0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 ? vvp_set_pagevec_dirty+0x3e0/0x3e0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 cl_io_commit_async+0x8b/0x160 [obdclass 627f410ec5b64ecc7835c12c3881f5ffa2886afa]
 vvp_io_write_commit+0x151/0x5f0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 vvp_io_write_start+0x8c4/0xc60 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 cl_io_start+0x6c/0x130 [obdclass 627f410ec5b64ecc7835c12c3881f5ffa2886afa]
 cl_io_loop+0x9a/0x200 [obdclass 627f410ec5b64ecc7835c12c3881f5ffa2886afa]
 ll_file_io_generic+0x423/0xc90 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 ll_file_write_iter+0x3f2/0x7b0 [lustre 0967379a0b23e963dac3d44d0227623bfa058caa]
 new_sync_write+0x11f/0x1b0
 vfs_write+0x21c/0x280
 ksys_write+0xa1/0xe0
 do_syscall_64+0x5b/0x80
 ? ksys_write+0x50/0xe0 
 ? do_syscall_64+0x67/0x80
 ? do_sys_open+0x57/0x80
 ? syscall_exit_to_user_mode+0x18/0x40
 ? do_syscall_64+0x67/0x80
 ? exc_page_fault+0x67/0x150
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f1eae65db13

https://testing.whamcloud.com/test_sets/227e0686-d7d7-4e4a-9d0b-cdaf599ee00e

Issue Links

• is blocking: LU-15959 support for SLES 15 SP4
• is related to: LU-15220 Linux kernel 5.14 support