loop0: detected capacity change from 0 to 512
Oops: divide error: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5960 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:qnx6_mmi_fill_super+0x22d/0x880 fs/qnx6/super_mmi.c:68
Code: c5 28 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 a9 05 00 00 45 85 e4 8b 45 00 89 c6 0f ce 0f 44 f0 b8 00 10 00 00 31 d2 <f7> f6 89 c5 4c 89 f7 e8 67 8e 40 01 41 89 c6 31 ff 89 c6 e8 1b 90
RSP: 0018:ffffc90003fc7a78 EFLAGS: 00010246
RAX: 0000000000001000 RBX: 0000000000000000 RCX: ffff88803138db80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888058072028 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1008a0614e R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888037660000 R15: 0000000000000000
FS: 00007f9d62d766c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff674e62000 CR3: 000000002baa2000 CR4: 00000000003526f0
Call Trace:
<TASK>
qnx6_fill_super+0x16f/0x1280 fs/qnx6/inode.c:318
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9d6371da0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9d62d75e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9d62d75ee0 RCX: 00007f9d6371da0a
RDX: 0000200000000080 RSI: 0000200000000040 RDI: 00007f9d62d75ea0
RBP: 0000200000000080 R08: 00007f9d62d75ee0 R09: 0000000000808003
R10: 0000000000808003 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f9d62d75ea0 R14: 0000000000000519 R15: 0000200000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qnx6_mmi_fill_super+0x22d/0x880 fs/qnx6/super_mmi.c:68
Code: c5 28 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 a9 05 00 00 45 85 e4 8b 45 00 89 c6 0f ce 0f 44 f0 b8 00 10 00 00 31 d2 <f7> f6 89 c5 4c 89 f7 e8 67 8e 40 01 41 89 c6 31 ff 89 c6 e8 1b 90
RSP: 0018:ffffc90003fc7a78 EFLAGS: 00010246
RAX: 0000000000001000 RBX: 0000000000000000 RCX: ffff88803138db80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888058072028 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1008a0614e R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888037660000 R15: 0000000000000000
FS: 00007f9d62d766c0(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff674e62000 CR3: 000000002baa2000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 28 48 89 sub %cl,-0x77(%rax)
3: e8 48 c1 e8 03 call 0x3e8c150
8: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
d: 84 c0 test %al,%al
f: 0f 85 a9 05 00 00 jne 0x5be
15: 45 85 e4 test %r12d,%r12d
18: 8b 45 00 mov 0x0(%rbp),%eax
1b: 89 c6 mov %eax,%esi
1d: 0f ce bswap %esi
1f: 0f 44 f0 cmove %eax,%esi
22: b8 00 10 00 00 mov $0x1000,%eax
27: 31 d2 xor %edx,%edx
* 29: f7 f6 div %esi <-- trapping instruction
2b: 89 c5 mov %eax,%ebp
2d: 4c 89 f7 mov %r14,%rdi
30: e8 67 8e 40 01 call 0x1408e9c
35: 41 89 c6 mov %eax,%r14d
38: 31 ff xor %edi,%edi
3a: 89 c6 mov %eax,%esi
3c: e8 .byte 0xe8
3d: 1b .byte 0x1b
3e: 90 nop