Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 5912 Comm: syz.0.17 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+0x339/0xbd0 fs/qnx6/super_mmi.c:68 Code: 8b 44 24 18 85 c0 74 12 e8 64 ca 6c fe 8b 44 24 08 41 0f cd 0f c8 89 44 24 08 e8 52 ca 6c fe 31 d2 b8 00 10 00 00 8b 74 24 08 <41> f7 f5 48 89 df 01 f0 44 89 ee 89 c0 48 89 44 24 08 e8 20 f7 65 RSP: 0018:ffffc90003bdfb20 EFLAGS: 00010246 RAX: 0000000000001000 RBX: ffff888036118000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888027db4b00 RBP: ffff88802fffda80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803f0e8180 R13: 0000000000000000 R14: ffff8880361181a0 R15: ffff88803f0e81a0 FS: 0000555568102500(0000) GS:ffff8880d4c46000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 000000002818d000 CR4: 0000000000352ef0 Call Trace: qnx6_fill_super+0x957/0x13e0 fs/qnx6/inode.c:318 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1872 vfs_get_tree+0x92/0x320 fs/super.c:1932 fc_mount fs/namespace.c:1278 [inline] do_new_mount_fc fs/namespace.c:3885 [inline] do_new_mount fs/namespace.c:3961 [inline] path_mount+0x7d0/0x2850 fs/namespace.c:4312 do_mount fs/namespace.c:4325 [inline] __do_sys_mount fs/namespace.c:4543 [inline] __se_sys_mount fs/namespace.c:4520 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4520 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc7a2b9e559 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc96c3ae18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc7a2e25fa0 RCX: 00007fc7a2b9e559 RDX: 0000200000000100 RSI: 0000200000000080 RDI: 0000200000000040 RBP: 00007fc7a2c358b0 R08: 00002000000000c0 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc7a2e25fac R14: 00007fc7a2e25fa0 R15: 00007fc7a2e25fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:qnx6_mmi_fill_super+0x339/0xbd0 fs/qnx6/super_mmi.c:68 Code: 8b 44 24 18 85 c0 74 12 e8 64 ca 6c fe 8b 44 24 08 41 0f cd 0f c8 89 44 24 08 e8 52 ca 6c fe 31 d2 b8 00 10 00 00 8b 74 24 08 <41> f7 f5 48 89 df 01 f0 44 89 ee 89 c0 48 89 44 24 08 e8 20 f7 65 RSP: 0018:ffffc90003bdfb20 EFLAGS: 00010246 RAX: 0000000000001000 RBX: ffff888036118000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888027db4b00 RBP: ffff88802fffda80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803f0e8180 R13: 0000000000000000 R14: ffff8880361181a0 R15: ffff88803f0e81a0 FS: 0000555568102500(0000) GS:ffff8880d4b46000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32e24008 CR3: 000000002818d000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 8b 44 24 18 mov 0x18(%rsp),%eax 4: 85 c0 test %eax,%eax 6: 74 12 je 0x1a 8: e8 64 ca 6c fe call 0xfe6cca71 d: 8b 44 24 08 mov 0x8(%rsp),%eax 11: 41 0f cd bswap %r13d 14: 0f c8 bswap %eax 16: 89 44 24 08 mov %eax,0x8(%rsp) 1a: e8 52 ca 6c fe call 0xfe6cca71 1f: 31 d2 xor %edx,%edx 21: b8 00 10 00 00 mov $0x1000,%eax 26: 8b 74 24 08 mov 0x8(%rsp),%esi * 2a: 41 f7 f5 div %r13d <-- trapping instruction 2d: 48 89 df mov %rbx,%rdi 30: 01 f0 add %esi,%eax 32: 44 89 ee mov %r13d,%esi 35: 89 c0 mov %eax,%eax 37: 48 89 44 24 08 mov %rax,0x8(%rsp) 3c: e8 .byte 0xe8 3d: 20 f7 and %dh,%bh 3f: 65 gs