general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 8203 Comm: kworker/u4:9 Not tainted 6.2.0-syzkaller-12765-g982818426a0f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: writeback wb_workfn
(flush-7:3)
RIP: 0010:nilfs_clear_dirty_page+0xa9/0x1130 fs/nilfs2/page.c:388
Code: 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0b eb 90 fe 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e9 ea 90 fe 4c 8b 2b 49 8d 5d 28 48
RSP: 0018:ffffc9000389f060 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001079480
RBP: ffffc9000389f130 R08: ffffffff83524289 R09: fffff9400020f291
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001079480
R13: 0000000000000000 R14: dffffc0000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a1956c000 CR3: 000000002a35d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
nilfs_clear_dirty_pages+0x1e0/0x370 fs/nilfs2/page.c:373
nilfs_writepages+0x11c/0x160 fs/nilfs2/inode.c:165
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
__writeback_single_inode+0x1c4/0x15e0 fs/fs-writeback.c:1600
writeback_sb_inodes+0x92c/0x1360 fs/fs-writeback.c:1891
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1962
wb_writeback+0x51c/0x1080 fs/fs-writeback.c:2067
wb_check_start_all fs/fs-writeback.c:2189 [inline]
wb_do_writeback fs/fs-writeback.c:2215 [inline]
wb_workfn+0xaad/0x1100 fs/fs-writeback.c:2248
process_one_work+0x915/0x13a0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:nilfs_clear_dirty_page+0xa9/0x1130 fs/nilfs2/page.c:388
Code: 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0b eb 90 fe 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e9 ea 90 fe 4c 8b 2b 49 8d 5d 28 48
RSP: 0018:ffffc9000389f060 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001079480
RBP: ffffc9000389f130 R08: ffffffff83524289 R09: fffff9400020f291
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001079480
R13: 0000000000000000 R14: dffffc0000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a1956c000 CR3: 000000005ddf3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 89 d8 mov %rbx,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1)
c: 74 08 je 0x16
e: 48 89 df mov %rbx,%rdi
11: e8 0b eb 90 fe callq 0xfe90eb21
16: 48 8b 1b mov (%rbx),%rbx
19: 48 89 d8 mov %rbx,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 48 89 df mov %rbx,%rdi
33: e8 e9 ea 90 fe callq 0xfe90eb21
38: 4c 8b 2b mov (%rbx),%r13
3b: 49 8d 5d 28 lea 0x28(%r13),%rbx
3f: 48 rex.W