Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 16952 Comm: syz.8.3355 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #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+0x22e/0x9d0
Code: 0b b5 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 10 01 e2 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 f4 00 e2 fe 49 8b 3f e8 ac 0b b5 fe
RSP: 0018:ffffc90009c17b00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88812dfc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90009c17c18 R08: ffffc90009c17a4f R09: 0000000000000000
R10: ffffc90009c178e8 R11: fffff52001382f4a R12: ffff888121370800
R13: dffffc0000000000 R14: ffff88802816f438 R15: 0000000000000030
FS:  00007fe1509cd6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30863fff CR3: 0000000023a1c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 jfs_syncpt+0x7b/0x90
 jfs_sync_fs+0x87/0xa0
 sync_filesystem+0xee/0x230
 jfs_reconfigure+0xc6/0xa00
 reconfigure_super+0x227/0x890
 vfs_fsconfig_locked+0x171/0x320
 __se_sys_fsconfig+0x78e/0x8d0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe14fb8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe1509cd038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007fe14fdb5fa0 RCX: 00007fe14fb8ebe9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000004
RBP: 00007fe14fc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe14fdb6038 R14: 00007fe14fdb5fa0 R15: 00007fffa99ad788
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lmLogSync+0x22e/0x9d0
Code: 0b b5 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 10 01 e2 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 f4 00 e2 fe 49 8b 3f e8 ac 0b b5 fe
RSP: 0018:ffffc90009c17b00 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: ffff88812dfc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90009c17c18 R08: ffffc90009c17a4f R09: 0000000000000000
R10: ffffc90009c178e8 R11: fffff52001382f4a R12: ffff888121370800
R13: dffffc0000000000 R14: ffff88802816f438 R15: 0000000000000030
FS:  00007fe1509cd6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555ed7baf5c8 CR3: 0000000023a1c000 CR4: 00000000000006f0
