Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-syzkaller-09959-gabf2050f51fd #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: bcachefs_write_ref bch2_do_invalidates_work
RIP: 0010:bch2_bkey_buf_reassemble fs/bcachefs/bkey_buf.h:27 [inline]
RIP: 0010:btree_node_iter_and_journal_peek+0x260/0x1010 fs/bcachefs/btree_iter.c:886
Code: 4c 24 18 45 89 f0 50 53 41 51 e8 2b b3 00 00 48 83 c4 18 4c 89 ff e8 8f 87 00 00 48 89 c3 49 89 d7 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 4c 89 ea 0f 85 d1 0c 00 00 48 89 5c 24 38 44
RSP: 0018:ffffc900003a6ce0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000ff RDI: ffffc900003a6e94
RBP: ffffc900003a6f70 R08: ffffc900003a6e93 R09: 0000000000000000
R10: ffffc900003a6e80 R11: fffff52000074dd3 R12: ffffc900003a6ee0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b220af5258 CR3: 00000000408ba000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
btree_path_down fs/bcachefs/btree_iter.c:914 [inline]
bch2_btree_path_traverse_one+0x1981/0x2940 fs/bcachefs/btree_iter.c:1169
bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline]
__bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2197 [inline]
bch2_btree_iter_peek_upto+0xb58/0x6f00 fs/bcachefs/btree_iter.c:2297
next_lru_key fs/bcachefs/alloc_background.c:2084 [inline]
bch2_do_invalidates_work+0x8d5/0x2710 fs/bcachefs/alloc_background.c:2118
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_bkey_buf_reassemble fs/bcachefs/bkey_buf.h:27 [inline]
RIP: 0010:btree_node_iter_and_journal_peek+0x260/0x1010 fs/bcachefs/btree_iter.c:886
Code: 4c 24 18 45 89 f0 50 53 41 51 e8 2b b3 00 00 48 83 c4 18 4c 89 ff e8 8f 87 00 00 48 89 c3 49 89 d7 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 4c 89 ea 0f 85 d1 0c 00 00 48 89 5c 24 38 44
RSP: 0018:ffffc900003a6ce0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000ff RDI: ffffc900003a6e94
RBP: ffffc900003a6f70 R08: ffffc900003a6e93 R09: 0000000000000000
R10: ffffc900003a6e80 R11: fffff52000074dd3 R12: ffffc900003a6ee0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e13f7f96e CR3: 00000000408ba000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4c 24 18 rex.WR and $0x18,%al
3: 45 89 f0 mov %r14d,%r8d
6: 50 push %rax
7: 53 push %rbx
8: 41 51 push %r9
a: e8 2b b3 00 00 call 0xb33a
f: 48 83 c4 18 add $0x18,%rsp
13: 4c 89 ff mov %r15,%rdi
16: e8 8f 87 00 00 call 0x87aa
1b: 48 89 c3 mov %rax,%rbx
1e: 49 89 d7 mov %rdx,%r15
21: 48 c1 e8 03 shr $0x3,%rax
25: 48 89 44 24 18 mov %rax,0x18(%rsp)
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 4c 89 ea mov %r13,%rdx
34: 0f 85 d1 0c 00 00 jne 0xd0b
3a: 48 89 5c 24 38 mov %rbx,0x38(%rsp)
3f: 44 rex.R