Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 116 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lmLogSync+0xfb/0x9d0
Code: 91 7e fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 63 fa e1 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 47 fa e1 fe 49 8b 3f e8 ef fd b4 fe
RSP: 0018:ffffc90001c2fb00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88801d773980 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001c2fc08 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc90001c2fb60 R11: fffff52000385f70 R12: ffff8881198dd800
R13: dffffc0000000000 R14: ffff88810700da38 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7c9fbd000 CR3: 000000010ace4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 jfs_syncpt+0x7b/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5ba/0xa90
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lmLogSync+0xfb/0x9d0
Code: 91 7e fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 63 fa e1 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 47 fa e1 fe 49 8b 3f e8 ef fd b4 fe
RSP: 0018:ffffc90001c2fb00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88801d773980 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001c2fc08 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc90001c2fb60 R11: fffff52000385f70 R12: ffff8881198dd800
R13: dffffc0000000000 R14: ffff88810700da38 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c7cb14a7e8 CR3: 000000010f38e000 CR4: 00000000000006f0
