------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_journal_iter.c:118!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 6955 Comm: syz.1.186 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:bch2_journal_keys_peek_prev_min+0x1542/0x1550 fs/bcachefs/btree_journal_iter.c:118
Code: 89 d8 48 c1 e8 03 42 80 3c 00 00 74 12 48 89 df e8 c3 d9 20 ff 49 b8 00 00 00 00 00 fc ff df 48 8b 03 48 8b 4c 24 60 eb 85 90 <0f> 0b e8 97 da a1 03 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000170ee80 EFLAGS: 00010282
RAX: 1ffff1102983966a RBX: ffffffffffffffff RCX: 0000100400000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88814c180000
RBP: ffffc9000170f040 R08: dffffc0000000000 R09: 0000000000000000
R10: 00000008ffffffff R11: 0000100400000000 R12: ffffc9000170f133
R13: ffff88814c1cb350 R14: ffffc9000170f998 R15: ffff88814c180000
FS:  00007f9c44c486c0(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c3aa00400 CR3: 0000000175650000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_btree_journal_peek_prev fs/bcachefs/btree_iter.c:2163 [inline]
 btree_trans_peek_prev_journal+0x2e0/0x550 fs/bcachefs/btree_iter.c:2177
 __bch2_btree_iter_peek_prev fs/bcachefs/btree_iter.c:2543 [inline]
 bch2_btree_iter_peek_prev_min+0x12c7/0x6370 fs/bcachefs/btree_iter.c:2591
 __bch2_resume_logged_op_finsert+0x103a/0x2e10 fs/bcachefs/io_misc.c:429
 bch2_fcollapse_finsert+0x219/0x320 fs/bcachefs/io_misc.c:533
 bchfs_fcollapse_finsert+0x321/0x560 fs/bcachefs/fs-io.c:565
 bch2_fallocate_dispatch+0x2d4/0x3c0
 vfs_fallocate+0x398/0x4f0 fs/open.c:327
 ksys_fallocate fs/open.c:351 [inline]
 __do_sys_fallocate fs/open.c:356 [inline]
 __se_sys_fallocate fs/open.c:354 [inline]
 __x64_sys_fallocate+0xab/0xe0 fs/open.c:354
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c43d8cde9
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:00007f9c44c48038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f9c43fa5fa0 RCX: 00007f9c43d8cde9
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000004
RBP: 00007f9c43e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000007000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9c43fa5fa0 R15: 00007fffdc744c08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_journal_keys_peek_prev_min+0x1542/0x1550 fs/bcachefs/btree_journal_iter.c:118
Code: 89 d8 48 c1 e8 03 42 80 3c 00 00 74 12 48 89 df e8 c3 d9 20 ff 49 b8 00 00 00 00 00 fc ff df 48 8b 03 48 8b 4c 24 60 eb 85 90 <0f> 0b e8 97 da a1 03 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000170ee80 EFLAGS: 00010282
RAX: 1ffff1102983966a RBX: ffffffffffffffff RCX: 0000100400000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88814c180000
RBP: ffffc9000170f040 R08: dffffc0000000000 R09: 0000000000000000
R10: 00000008ffffffff R11: 0000100400000000 R12: ffffc9000170f133
R13: ffff88814c1cb350 R14: ffffc9000170f998 R15: ffff88814c180000
FS:  00007f9c44c486c0(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c3aa00400 CR3: 0000000175650000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400