Crash during clone() on user process while perf is running
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
zfs-linux (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
[114160.228398] BUG: kernel NULL pointer dereference, address: 000000000000008c
[114160.232549] #PF: supervisor write access in kernel mode
[114160.236135] #PF: error_code(0x0002) - not-present page
[114160.239636] PGD 0 P4D 0
[114160.242317] Oops: 0002 [#1] SMP NOPTI
[114160.245344] CPU: 360 PID: 1559314 Comm: git Tainted: P O 6.2.0-1018-aws #18~22.04.1-Ubuntu
[114160.251947] Hardware name: Amazon EC2 u-12tb1.112xlarge/, BIOS 1.0 10/16/2017
[114160.257988] RIP: 0010:inherit_
[114160.262023] Code: 48 89 df e8 5c fd ff ff 49 89 c7 48 3d 00 f0 ff ff 0f 87 85 00 00 00 48 3b 9b 90 00 00 00 0f 84 a1 00 00 00 8b 83 8c 00 00 00 <41> 89 87 8c 00 00 00 48 83 c4 08 31 c0 5b 41 5c 41 5d 41 5e 41 5f
[114160.274384] RSP: 0018:ffffb85df1
[114160.278273] RAX: 0000000000000000 RBX: ffff92697ecac8a8 RCX: 0000000000000000
[114160.284636] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[114160.290996] RBP: ffffb85df19bbcc8 R08: 0000000000000000 R09: 0000000000000000
[114160.297347] R10: 0000000000000000 R11: 0000000000000000 R12: ffff99836c44e300
[114160.303728] R13: ffff92697ecac8a8 R14: ffff9967aa4c2000 R15: 0000000000000000
[114160.309843] FS: 00007fd549fd7b8
[114160.316399] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[114160.320395] CR2: 000000000000008c CR3: 0000090e95404006 CR4: 00000000007706e0
[114160.326153] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[114160.331931] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[114160.337773] PKRU: 55555554
[114160.340584] Call Trace:
[114160.343298] <TASK>
[114160.345814] ? show_regs+0x72/0x90
[114160.348829] ? __die+0x25/0x80
[114160.351723] ? page_fault_
[114160.354996] ? do_user_
[114160.358203] ? exc_page_
[114160.361311] ? asm_exc_
[114160.364535] ? inherit_
[114160.367995] ? inherit_
[114160.371432] perf_event_
[114160.374787] perf_event_
[114160.377993] copy_process+
[114160.381050] kernel_
[114160.384040] __do_sys_
[114160.387104] __x64_sys_
[114160.390350] do_syscall_
[114160.393832] ? irqentry_
[114160.397061] ? exc_page_
[114160.400273] entry_SYSCALL_
[114160.404066] RIP: 0033:0x7fd549ceab57
[114160.407556] Code: ba 04 00 f3 0f 1e fa 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 41 89 c0 85 c0 75 2c 64 48 8b 04 25 10 00
[114160.419547] RSP: 002b:00007ffc16
[114160.425773] RAX: ffffffffffffffda RBX: 00007fd54a0df040 RCX: 00007fd549ceab57
[114160.431488] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[114160.437215] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc169b7e20
[114160.442979] R10: 00007fd549fd7e50 R11: 0000000000000246 R12: 0000000000000001
[114160.448669] R13: 00007ffc169b7f68 R14: 00007ffc169b7e60 R15: 00007ffc169b7ee0
[114160.454441] </TASK>
[114160.457009] Modules linked in: xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_
[114160.503752] CR2: 000000000000008c
[114160.506639] ---[ end trace 0000000000000000 ]---
[114160.509950] RIP: 0010:inherit_
[114160.513589] Code: 48 89 df e8 5c fd ff ff 49 89 c7 48 3d 00 f0 ff ff 0f 87 85 00 00 00 48 3b 9b 90 00 00 00 0f 84 a1 00 00 00 8b 83 8c 00 00 00 <41> 89 87 8c 00 00 00 48 83 c4 08 31 c0 5b 41 5c 41 5d 41 5e 41 5f
[114160.524861] RSP: 0018:ffffb85df1
[114160.528421] RAX: 0000000000000000 RBX: ffff92697ecac8a8 RCX: 0000000000000000
[114160.534223] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[114160.540064] RBP: ffffb85df19bbcc8 R08: 0000000000000000 R09: 0000000000000000
[114160.545817] R10: 0000000000000000 R11: 0000000000000000 R12: ffff99836c44e300
[114160.551571] R13: ffff92697ecac8a8 R14: ffff9967aa4c2000 R15: 0000000000000000
[114160.557330] FS: 00007fd549fd7b8
[114160.563383] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[114160.567041] CR2: 000000000000008c CR3: 0000090e95404006 CR4: 00000000007706e0
[114160.572767] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[114160.578502] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[114160.584261] PKRU: 55555554