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: 23 Comm: ksoftirqd/1 Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:NODE_MAPPING fs/f2fs/f2fs.h:2058 [inline]
RIP: 0010:f2fs_in_warm_node_list+0x4b/0x1b0 fs/f2fs/node.c:315
Code: 81 c6 d0 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 43 b0 8d 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 26 b0 8d ff 4d 8b 26 4c 8d 73 18
RSP: 0018:ffffc900001879e8 EFLAGS: 00010006
RAX: 0000000000000006 RBX: ffffea0004a64d80 RCX: ffff888100332880
RDX: 0000000000000100 RSI: ffffea0004a64d80 RDI: ffff88811859c000
RBP: ffffc90000187a08 R08: ffffffff8792e42f R09: 1ffffffff0f25c85
R10: dffffc0000000000 R11: fffffbfff0f25c86 R12: dffffc0000000000
R13: ffffea0004a64d80 R14: 0000000000000030 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08911f2d94 CR3: 000000011017d000 CR4: 00000000003506a0
Call Trace:
 <TASK>
 f2fs_write_end_io+0x512/0xae0 fs/f2fs/data.c:382
 bio_endio+0x6a9/0x7c0 block/bio.c:1557
 req_bio_endio block/blk-mq.c:786 [inline]
 blk_update_request+0x4c4/0xe60 block/blk-mq.c:931
 blk_mq_end_request+0x41/0x80 block/blk-mq.c:1056
 blk_flush_complete_seq+0x5b8/0xca0 block/blk-flush.c:210
 flush_end_io+0x838/0xab0 block/blk-flush.c:268
 __blk_mq_end_request+0x49d/0x570 block/blk-mq.c:1046
 blk_mq_end_request+0x55/0x80 block/blk-mq.c:1058
 lo_complete_rq+0x147/0x260 drivers/block/loop.c:365
 blk_complete_reqs block/blk-mq.c:1136 [inline]
 blk_done_softirq+0x116/0x160 block/blk-mq.c:1141
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 run_ksoftirqd+0x28/0x30 kernel/softirq.c:1019
 smpboot_thread_fn+0x4a0/0x910 kernel/smpboot.c:164
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:NODE_MAPPING fs/f2fs/f2fs.h:2058 [inline]
RIP: 0010:f2fs_in_warm_node_list+0x4b/0x1b0 fs/f2fs/node.c:315
Code: 81 c6 d0 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 43 b0 8d 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 26 b0 8d ff 4d 8b 26 4c 8d 73 18
RSP: 0018:ffffc900001879e8 EFLAGS: 00010006
RAX: 0000000000000006 RBX: ffffea0004a64d80 RCX: ffff888100332880
RDX: 0000000000000100 RSI: ffffea0004a64d80 RDI: ffff88811859c000
RBP: ffffc90000187a08 R08: ffffffff8792e42f R09: 1ffffffff0f25c85
R10: dffffc0000000000 R11: fffffbfff0f25c86 R12: dffffc0000000000
R13: ffffea0004a64d80 R14: 0000000000000030 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08911f2d94 CR3: 000000011017d000 CR4: 00000000003506a0
----------------
Code disassembly (best guess):
   0:	81 c6 d0 00 00 00    	add    $0xd0,%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 43 b0 8d ff       	call   0xff8db05f
  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 26 b0 8d ff       	call   0xff8db05f
  39:	4d 8b 26             	mov    (%r14),%r12
  3c:	4c 8d 73 18          	lea    0x18(%rbx),%r14