loop0: detected capacity change from 0 to 512
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
syz.0.0: attempt to access beyond end of device
loop0: rw=4096, sector=2, nr_sectors = 2 limit=0
EXT4-fs (loop0): unable to read superblock
------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_trans_commit.c:348!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5344 Comm: syz.0.0 Not tainted 6.16.0-rc6-syzkaller #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:btree_insert_entry_checks fs/bcachefs/btree_trans_commit.c:343 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:725 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:854 [inline]
RIP: 0010:__bch2_trans_commit+0x86e5/0x8870 fs/bcachefs/btree_trans_commit.c:1085
Code: 97 fd eb 0c e8 3c 6e 97 fd eb 05 e8 35 6e 97 fd 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 48 e9 e1 af ff ff e8 1c 6e 97 fd 90 <0f> 0b e8 14 6e 97 fd 90 0f 0b e8 0c 6e 97 fd 90 0f 0b e8 04 6e 97
RSP: 0018:ffffc9000d2f7760 EFLAGS: 00010293
RAX: ffffffff8428c554 RBX: ffffffff84288725 RCX: ffff888039738000
RDX: 0000000000000000 RSI: ffffffff8db8698b RDI: ffff888039738000
RBP: ffffc9000d2f7a50 R08: 0000000000000000 R09: ffffffff84288725
R10: dffffc0000000000 R11: ffffed100a749309 R12: ffff888055b50020
R13: dffffc0000000000 R14: ffff888055b524d8 R15: 0000000000000001
FS:  00007f8994cd06c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f2e77c000 CR3: 00000000439c8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 bch2_trans_commit fs/bcachefs/btree_update.h:241 [inline]
 __bch2_unlink+0x2b9/0x530 fs/bcachefs/fs.c:827
 bch2_unlink+0xb1/0xf0 fs/bcachefs/fs.c:864
 vfs_unlink+0x394/0x650 fs/namei.c:4595
 do_unlinkat+0x350/0x560 fs/namei.c:4659
 __do_sys_unlinkat fs/namei.c:4700 [inline]
 __se_sys_unlinkat fs/namei.c:4693 [inline]
 __x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4693
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8993d8e929
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:00007f8994cd0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f8993fb5fa0 RCX: 00007f8993d8e929
RDX: 0000000000000000 RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007f8993e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8993fb5fa0 R15: 00007fff239aecb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btree_insert_entry_checks fs/bcachefs/btree_trans_commit.c:343 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:725 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:854 [inline]
RIP: 0010:__bch2_trans_commit+0x86e5/0x8870 fs/bcachefs/btree_trans_commit.c:1085
Code: 97 fd eb 0c e8 3c 6e 97 fd eb 05 e8 35 6e 97 fd 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 48 e9 e1 af ff ff e8 1c 6e 97 fd 90 <0f> 0b e8 14 6e 97 fd 90 0f 0b e8 0c 6e 97 fd 90 0f 0b e8 04 6e 97
RSP: 0018:ffffc9000d2f7760 EFLAGS: 00010293
RAX: ffffffff8428c554 RBX: ffffffff84288725 RCX: ffff888039738000
RDX: 0000000000000000 RSI: ffffffff8db8698b RDI: ffff888039738000
RBP: ffffc9000d2f7a50 R08: 0000000000000000 R09: ffffffff84288725
R10: dffffc0000000000 R11: ffffed100a749309 R12: ffff888055b50020
R13: dffffc0000000000 R14: ffff888055b524d8 R15: 0000000000000001
FS:  00007f8994cd06c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000439c8000 CR4: 0000000000352ef0