------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_trans_commit.c:344!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI
CPU: 0 UID: 0 PID: 180 Comm: kworker/u8:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: writeback wb_workfn (flush-bcachefs-1)
RIP: 0010:btree_insert_entry_checks fs/bcachefs/btree_trans_commit.c:339 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:743 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:866 [inline]
RIP: 0010:__bch2_trans_commit+0x19f8/0x1f80 fs/bcachefs/btree_trans_commit.c:1066
Code: 0f 84 46 fe ff ff 44 8b 78 18 48 c7 c7 20 0b b8 83 48 8b 74 24 18 e8 47 af 8c ff e8 42 49 90 ff 45 85 ff 0f 8e 39 fe ff ff 90 <0f> 0b 89 d6 66 83 fa 08 72 5a 89 f2 31 f6 48 8b 3c f0 48 89 3c f1
RSP: 0018:ffffc90000fe7848 EFLAGS: 00010206
RAX: 2713e4aa15473c00 RBX: ffff88810effc000 RCX: 2713e4aa15473c00
RDX: 376c9a78f402b799 RSI: ffffffff837c55da RDI: ffff888108a85280
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000020
R10: 0000000000000006 R11: ffffffff8198a900 R12: ffff88810effe468
R13: 0000000000000000 R14: ffff888110380000 R15: 0000000000000200
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2d54f04d0 CR3: 000000010f7ec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_trans_commit fs/bcachefs/btree_update.h:182 [inline]
 bch2_write_inode+0x413/0x500 fs/bcachefs/fs.c:113
 bch2_vfs_write_inode+0x42/0x70 fs/bcachefs/fs.c:1832
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x1f1/0x540 fs/fs-writeback.c:1745
 writeback_sb_inodes+0x29c/0x550 fs/fs-writeback.c:1976
 wb_writeback+0x196/0x450 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x1ae/0x560 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0x313/0x6b0 kernel/workqueue.c:3310
 worker_thread+0x214/0x2e0 kernel/workqueue.c:3391
 kthread+0xf6/0x120 kernel/kthread.c:389
 ret_from_fork+0x32/0x40 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:btree_insert_entry_checks fs/bcachefs/btree_trans_commit.c:339 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:743 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:866 [inline]
RIP: 0010:__bch2_trans_commit+0x19f8/0x1f80 fs/bcachefs/btree_trans_commit.c:1066
Code: 0f 84 46 fe ff ff 44 8b 78 18 48 c7 c7 20 0b b8 83 48 8b 74 24 18 e8 47 af 8c ff e8 42 49 90 ff 45 85 ff 0f 8e 39 fe ff ff 90 <0f> 0b 89 d6 66 83 fa 08 72 5a 89 f2 31 f6 48 8b 3c f0 48 89 3c f1
RSP: 0018:ffffc90000fe7848 EFLAGS: 00010206
RAX: 2713e4aa15473c00 RBX: ffff88810effc000 RCX: 2713e4aa15473c00
RDX: 376c9a78f402b799 RSI: ffffffff837c55da RDI: ffff888108a85280
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000020
R10: 0000000000000006 R11: ffffffff8198a900 R12: ffff88810effe468
R13: 0000000000000000 R14: ffff888110380000 R15: 0000000000000200
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2d54f04d0 CR3: 000000010f7ec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400