general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:NODE_MAPPING fs/f2fs/f2fs.h:2055 [inline]
RIP: 0010:f2fs_in_warm_node_list+0x4b/0x1b0 fs/f2fs/node.c:314
Code: 81 c6 b8 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 93 2e 95 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 76 2e 95 ff 4d 8b 26 4c 8d 73 18
RSP: 0018:ffffc90000147968 EFLAGS: 00010006
RAX: 0000000000000006 RBX: ffffea00044240c0 RCX: ffff8881002ee2c0
RDX: 0000000080000101 RSI: ffffea00044240c0 RDI: ffff8881276e6000
RBP: ffffc90000147988 R08: ffffffff86c3762f R09: 1ffffffff0d86ec5
R10: dffffc0000000000 R11: fffffbfff0d86ec6 R12: dffffc0000000000
R13: ffffea00044240c0 R14: 0000000000000030 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc71780ff0 CR3: 000000012439f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
f2fs_write_end_io+0x646/0xdc0 fs/f2fs/data.c:373
bio_endio+0x646/0x860 block/bio.c:1458
req_bio_endio block/blk-core.c:263 [inline]
blk_update_request+0x74a/0x1090 block/blk-core.c:1468
blk_mq_end_request+0x41/0x80 block/blk-mq.c:572
blk_flush_complete_seq+0x5d8/0xcd0 block/blk-flush.c:205
flush_end_io+0x7d1/0xb50 block/blk-flush.c:262
__blk_mq_end_request+0x387/0x3e0 block/blk-mq.c:563
blk_mq_end_request+0x55/0x80 block/blk-mq.c:574
lo_complete_rq+0x147/0x2d0 drivers/block/loop.c:490
blk_done_softirq+0x26f/0x2f0 block/blk-mq.c:596
__do_softirq+0x255/0x563 kernel/softirq.c:309
run_ksoftirqd+0x23/0x30 kernel/softirq.c:670
smpboot_thread_fn+0x474/0x850 kernel/smpboot.c:164
kthread+0x346/0x3d0 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Modules linked in:
---[ end trace 9fd33a44443c3cf5 ]---
RIP: 0010:NODE_MAPPING fs/f2fs/f2fs.h:2055 [inline]
RIP: 0010:f2fs_in_warm_node_list+0x4b/0x1b0 fs/f2fs/node.c:314
Code: 81 c6 b8 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 93 2e 95 ff 4d 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 76 2e 95 ff 4d 8b 26 4c 8d 73 18
RSP: 0018:ffffc90000147968 EFLAGS: 00010006
RAX: 0000000000000006 RBX: ffffea00044240c0 RCX: ffff8881002ee2c0
RDX: 0000000080000101 RSI: ffffea00044240c0 RDI: ffff8881276e6000
RBP: ffffc90000147988 R08: ffffffff86c3762f R09: 1ffffffff0d86ec5
R10: dffffc0000000000 R11: fffffbfff0d86ec6 R12: dffffc0000000000
R13: ffffea00044240c0 R14: 0000000000000030 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc71780ff0 CR3: 000000012439f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 81 c6 b8 00 00 00 add $0xb8,%esi
6: 4c 89 f0 mov %r14,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
12: 74 08 je 0x1c
14: 4c 89 f7 mov %r14,%rdi
17: e8 93 2e 95 ff call 0xff952eaf
1c: 4d 8b 36 mov (%r14),%r14
1f: 49 83 c6 30 add $0x30,%r14
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 76 2e 95 ff call 0xff952eaf
39: 4d 8b 26 mov (%r14),%r12
3c: 4c 8d 73 18 lea 0x18(%rbx),%r14