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kernel BUG at fs/bcachefs/btree_journal_iter.c:83!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:bch2_journal_keys_peek_max+0x166a/0x1680 fs/bcachefs/btree_journal_iter.c:83
Code: 1c 08 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 c4 a4 d2 fd 4c 8b 33 e9 d2 fe ff ff e8 c7 65 68 fd 90 <0f> 0b e8 df 48 d5 07 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000d15e6a0 EFLAGS: 00010283
RAX: ffffffff845a5759 RBX: 000000000000003b RCX: 0000000000100000
RDX: ffffc9000f1b4000 RSI: 000000000003e3d5 RDI: 000000000003e3d6
RBP: ffffc9000d15e860 R08: ffffffff845a4237 R09: 0000000000000000
R10: 00000001ffffffff R11: 2000000000000000 R12: dffffc0000000000
R13: ffff888053700000 R14: ffffffffffffffff R15: ffffc9000d15f070
FS:  00007fcd9828f6c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 0000000044310000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_btree_journal_peek fs/bcachefs/btree_iter.c:2110 [inline]
 btree_trans_peek_journal+0x34b/0x5c0 fs/bcachefs/btree_iter.c:2139
 __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2276 [inline]
 bch2_btree_iter_peek_max+0x14f4/0x61a0 fs/bcachefs/btree_iter.c:2347
 bch2_btree_iter_peek_slot+0xde9/0x27e0 fs/bcachefs/btree_iter.c:2814
 bch2_btree_iter_peek_prev_min+0x201/0x6230 fs/bcachefs/btree_iter.c:2589
 __bch2_resume_logged_op_finsert+0xd8b/0x3790 fs/bcachefs/io_misc.c:432
 bch2_fcollapse_finsert+0x289/0x3c0 fs/bcachefs/io_misc.c:536
 bchfs_fcollapse_finsert+0x3ac/0x600 fs/bcachefs/fs-io.c:595
 bch2_fallocate_dispatch+0x3f7/0x580 fs/bcachefs/fs-io.c:-1
 vfs_fallocate+0x627/0x7a0 fs/open.c:338
 ksys_fallocate fs/open.c:362 [inline]
 __do_sys_fallocate fs/open.c:367 [inline]
 __se_sys_fallocate fs/open.c:365 [inline]
 __x64_sys_fallocate+0xbc/0x110 fs/open.c:365
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd9738e169
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:00007fcd9828f038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fcd975b6160 RCX: 00007fcd9738e169
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000007
RBP: 00007fcd97410a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000007000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcd975b6160 R15: 00007ffe109c7258
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_journal_keys_peek_max+0x166a/0x1680 fs/bcachefs/btree_journal_iter.c:83
Code: 1c 08 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 c4 a4 d2 fd 4c 8b 33 e9 d2 fe ff ff e8 c7 65 68 fd 90 <0f> 0b e8 df 48 d5 07 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000d15e6a0 EFLAGS: 00010283
RAX: ffffffff845a5759 RBX: 000000000000003b RCX: 0000000000100000
RDX: ffffc9000f1b4000 RSI: 000000000003e3d5 RDI: 000000000003e3d6
RBP: ffffc9000d15e860 R08: ffffffff845a4237 R09: 0000000000000000
R10: 00000001ffffffff R11: 2000000000000000 R12: dffffc0000000000
R13: ffff888053700000 R14: ffffffffffffffff R15: ffffc9000d15f070
FS:  00007fcd9828f6c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 0000000044310000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400