qnx6: unable to set blocksize
qnx6: unable to set blocksize
Oops: divide error: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6408 Comm: syz.0.85 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
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 a7 1f 40 01 41 89 c6 31 ff 89 c6 e8 9b cd
RSP: 0018:ffffc9000ef37a78 EFLAGS: 00010246
RAX: 0000000000001000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888046622028 R08: ffff88804942065f R09: 1ffff110092840cb
R10: dffffc0000000000 R11: ffffed10092840cc R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888042336000 R15: 0000000000000000
FS:  00007f26e9cb26c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f174bda3000 CR3: 00000000464b7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 qnx6_fill_super+0x16f/0x1280 fs/qnx6/inode.c:318
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1691
 vfs_get_tree+0x92/0x2a0 fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x329/0xa50 fs/namespace.c:3712
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4201
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26e8f896ca
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:00007f26e9cb1e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f26e9cb1ee0 RCX: 00007f26e8f896ca
RDX: 0000000020009e00 RSI: 0000000020000080 RDI: 00007f26e9cb1ea0
RBP: 0000000020009e00 R08: 00007f26e9cb1ee0 R09: 000000000020c800
R10: 000000000020c800 R11: 0000000000000246 R12: 0000000020000080
R13: 00007f26e9cb1ea0 R14: 0000000000009e0d R15: 0000000020000040
 </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 a7 1f 40 01 41 89 c6 31 ff 89 c6 e8 9b cd
RSP: 0018:ffffc9000ef37a78 EFLAGS: 00010246
RAX: 0000000000001000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888046622028 R08: ffff88804942065f R09: 1ffff110092840cb
R10: dffffc0000000000 R11: ffffed10092840cc R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888042336000 R15: 0000000000000000
FS:  00007f26e9cb26c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f174bd9f000 CR3: 00000000464b7000 CR4: 0000000000352ef0
----------------
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 a7 1f 40 01       	call   0x1401fdc
  35:	41 89 c6             	mov    %eax,%r14d
  38:	31 ff                	xor    %edi,%edi
  3a:	89 c6                	mov    %eax,%esi
  3c:	e8                   	.byte 0xe8
  3d:	9b                   	fwait
  3e:	cd                   	.byte 0xcd