loop0: detected capacity change from 0 to 128 qnx6: unable to set blocksize loop0: detected capacity change from 0 to 128 Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 6240 Comm: syz.0.69 Not tainted 6.16.0-rc4-syzkaller-g66701750d556 #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: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 f6 89 c5 4c 89 f7 e8 37 d8 78 01 41 89 c6 31 ff 89 c6 e8 cb fa RSP: 0018:ffffc9000d5dfb58 EFLAGS: 00010246 RAX: 0000000000001000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88804ba76028 R08: ffff888012500917 R09: 1ffff110024a0122 R10: dffffc0000000000 R11: ffffed10024a0123 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88804fe4a000 R15: 0000000000000000 FS: 00007f803d3d66c0(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f12561f70a0 CR3: 000000004d860000 CR4: 0000000000352ef0 Call Trace: qnx6_fill_super+0x16f/0x1280 fs/qnx6/inode.c:318 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1681 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 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: 0033:0x7f803d57feba Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f803d3d5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f803d3d5ef0 RCX: 00007f803d57feba RDX: 0000000020009e00 RSI: 0000000020000080 RDI: 00007f803d3d5eb0 RBP: 0000000020009e00 R08: 00007f803d3d5ef0 R09: 000000000020c800 R10: 000000000020c800 R11: 0000000000000246 R12: 0000000020000080 R13: 00007f803d3d5eb0 R14: 0000000000009e0d R15: 0000000020000040 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 f6 89 c5 4c 89 f7 e8 37 d8 78 01 41 89 c6 31 ff 89 c6 e8 cb fa RSP: 0018:ffffc9000d5dfb58 EFLAGS: 00010246 RAX: 0000000000001000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88804ba76028 R08: ffff888012500917 R09: 1ffff110024a0122 R10: dffffc0000000000 R11: ffffed10024a0123 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88804fe4a000 R15: 0000000000000000 FS: 00007f803d3d66c0(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005612aada44c0 CR3: 000000004d860000 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 37 d8 78 01 call 0x178d86c 35: 41 89 c6 mov %eax,%r14d 38: 31 ff xor %edi,%edi 3a: 89 c6 mov %eax,%esi 3c: e8 .byte 0xe8 3d: cb lret 3e: fa cli