------------[ cut here ]------------
WARNING: CPU: 1 PID: 40 at fs/bcachefs/btree_iter.c:3194 __bch2_trans_kmalloc+0x50f/0x9d0
Modules linked in:
CPU: 1 UID: 0 PID: 40 Comm: kworker/u10:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: btree_update btree_interior_update_work
RIP: 0010:__bch2_trans_kmalloc+0x50f/0x9d0
Code: 00 28 00 00 e8 d2 5b 35 00 48 c7 c0 75 f7 ff ff 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d e9 58 3c 53 07 cc e8 62 7c 96 fd 90 <0f> 0b 90 e9 d3 fb ff ff e8 54 7c 96 fd 90 0f 0b 90 e9 dc fd ff ff
RSP: 0018:ffffc900006eec10 EFLAGS: 00010293
RAX: ffffffff84292ece RBX: ffff8881167b0000 RCX: ffff8881049d9cc0
RDX: 0000000000000000 RSI: 0000000000020000 RDI: 0000000000010000
RBP: 0000000000020000 R08: ffffc900006ef010 R09: 0000000000000001
R10: ffffc900006eef20 R11: fffff520000dddb1 R12: dffffc0000000000
R13: ffff8881167b0030 R14: 1ffff11022cf6000 R15: 0000000000000011
FS:  0000000000000000(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5f87bd000 CR3: 00000000294a6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 bch2_alloc_sectors_start_trans+0x1d59/0x1e80
 bch2_btree_reserve_get+0x641/0x1810
 bch2_btree_update_start+0x18ff/0x1de0
 bch2_btree_split_leaf+0x14b/0x8e0
 bch2_trans_commit_error+0x1b7/0x1130
 __bch2_trans_commit+0x1bb5/0x8870
 btree_interior_update_work+0x1082/0x27d0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
