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: 117 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+0x138/0x9d0
Code: b1 b2 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 26 d6 e0 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 0a d6 e0 fe 49 8b 3f e8 b2 b1 b2 fe
RSP: 0018:ffffc90002447ae0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff8881061f8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002447be8 R08: ffffc90002447a2f R09: 0000000000000000
R10: ffffc900024478c8 R11: fffff52000488f46 R12: ffff888120dca000
R13: dffffc0000000000 R14: ffff888106fcc638 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b840a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd91e755000 CR3: 00000000244a8000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 jfs_syncpt+0x7b/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5ba/0xa90
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lmLogSync+0x138/0x9d0
Code: b1 b2 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 26 d6 e0 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 0a d6 e0 fe 49 8b 3f e8 b2 b1 b2 fe
RSP: 0018:ffffc90002447ae0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff8881061f8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002447be8 R08: ffffc90002447a2f R09: 0000000000000000
R10: ffffc900024478c8 R11: fffff52000488f46 R12: ffff888120dca000
R13: dffffc0000000000 R14: ffff888106fcc638 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8881a3a0a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff10624398 CR3: 0000000025894000 CR4: 00000000000006f0
