ISOFS: Unable to identify CD-ROM format.
------------[ cut here ]------------
kernel BUG at fs/buffer.c:3065!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 31903 Comm: syz-executor.0 Not tainted 4.19.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:submit_bh_wbc+0x5e5/0x760 fs/buffer.c:3065
Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 e1 59 b2 ff f0 80 63 01 f7 e9 4d fb ff ff e8 d2 59 b2 ff 0f 0b e8 cb 59 b2 ff <0f> 0b e8 c4 59 b2 ff 0f 0b e8 bd 59 b2 ff 0f 0b e8 b6 59 b2 ff 0f
RSP: 0018:ffff88820c8efa40 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888032667150 RCX: ffffc90005ad6000
RDX: 0000000000006502 RSI: ffffffff81b52f25 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff88820bd500c0 R09: ffffed10064cce37
R10: ffffed10064cce36 R11: ffff8880326671b3 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880505aae40
FS:  00007f290ecbd700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000768000 CR3: 0000000044138000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh fs/buffer.c:3112 [inline]
 __bread_slow fs/buffer.c:1176 [inline]
 __bread_gfp+0x136/0x240 fs/buffer.c:1369
 sb_bread include/linux/buffer_head.h:309 [inline]
 isofs_fill_super+0xb30/0x2a00 fs/isofs/inode.c:678
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x30c fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x400 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x4f4/0x2b50 fs/namespace.c:2799
 ksys_mount+0xd7/0x150 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45f47a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f290ecbca68 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000508a00 RCX: 000000000045f47a
RDX: 00007f290ecbcae0 RSI: 0000000020000040 RDI: 00007f290ecbcb00
RBP: 000000000078bf00 R08: 00007f290ecbcb40 R09: 00007f290ecbcae0
R10: 0000000000000001 R11: 0000000000000206 R12: 00000000ffffffff
R13: 0000000000000bef R14: 00000000004ce30f R15: 00007f290ecbd6d4
Modules linked in:
---[ end trace ccdb1755e3d466f3 ]---
RIP: 0010:submit_bh_wbc+0x5e5/0x760 fs/buffer.c:3065
Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 e1 59 b2 ff f0 80 63 01 f7 e9 4d fb ff ff e8 d2 59 b2 ff 0f 0b e8 cb 59 b2 ff <0f> 0b e8 c4 59 b2 ff 0f 0b e8 bd 59 b2 ff 0f 0b e8 b6 59 b2 ff 0f
RSP: 0018:ffff88820c8efa40 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888032667150 RCX: ffffc90005ad6000
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
RDX: 0000000000006502 RSI: ffffffff81b52f25 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff88820bd500c0 R09: ffffed10064cce37
R10: ffffed10064cce36 R11: ffff8880326671b3 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880505aae40
FS:  00007f290ecbd700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f52c000 CR3: 0000000044138000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400