bridge1: entered promiscuous mode
bridge1: entered allmulticast mode
loop0: detected capacity change from 0 to 32768
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,journal_flush_disabled,fsck,recovery_pass_last=set_may_go_rw,reconstruct_alloc,no_data_io
bcachefs (loop0): recovering from clean shutdown, journal seq 10
bcachefs (loop0): Version upgrade required:
Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete
Doing incompatible version upgrade from 0.24: unwritten_extents to 1.25: extent_flags
  running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance
bcachefs (loop0): dropping and reconstructing all alloc info
bcachefs (loop0): invalid bkey in btree_node btree=snapshots level=0: u64s 8 type snapshot 0:4294967295:0 len 0 ver 0: is_subvol 1 deleted 0 parent  268435456 children          0          0 subvol 1 tree 0
  bad parent node (268435456 <= 4294967295), deleting
bcachefs (loop0): accounting_read... done
bcachefs (loop0): alloc_read... done
bcachefs (loop0): snapshots_read... done
bcachefs (loop0): check_allocations... done
bcachefs (loop0): going read-write
bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean
bcachefs (loop0): done starting filesystem
------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_journal_iter.c:83!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00048-gc62f4b82d571 #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 e4 58 d2 fd 4c 8b 33 e9 d2 fe ff ff e8 97 1f 68 fd 90 <0f> 0b e8 5f 8b d5 07 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900019ce6a0 EFLAGS: 00010283
RAX: ffffffff845b3599 RBX: 000000000000003b RCX: 0000000000100000
RDX: ffffc9000e4b2000 RSI: 0000000000007788 RDI: 0000000000007789
RBP: ffffc900019ce860 R08: ffffffff845b2077 R09: 0000000000000000
R10: 00000001ffffffff R11: 2000000000000000 R12: dffffc0000000000
R13: ffff888053680000 R14: ffffffffffffffff R15: ffffc900019cf070
FS:  00007fa6ce05b6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa6c11ffe00 CR3: 00000000462cc000 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+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6cd18e169
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:00007fa6ce05b038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa6cd3b5fa0 RCX: 00007fa6cd18e169
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 000000000000000b
RBP: 00007fa6cd210a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000007000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa6cd3b5fa0 R15: 00007ffe85a4ddd8
 </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 e4 58 d2 fd 4c 8b 33 e9 d2 fe ff ff e8 97 1f 68 fd 90 <0f> 0b e8 5f 8b d5 07 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900019ce6a0 EFLAGS: 00010283
RAX: ffffffff845b3599 RBX: 000000000000003b RCX: 0000000000100000
RDX: ffffc9000e4b2000 RSI: 0000000000007788 RDI: 0000000000007789
RBP: ffffc900019ce860 R08: ffffffff845b2077 R09: 0000000000000000
R10: 00000001ffffffff R11: 2000000000000000 R12: dffffc0000000000
R13: ffff888053680000 R14: ffffffffffffffff R15: ffffc900019cf070
FS:  00007fa6ce05b6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eb878d70b8 CR3: 00000000462cc000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400