XFS (loop2): Invalid superblock magic number REISERFS warning (device loop4): reiserfs_fill_super: Cannot allocate memory for journal device name ------------[ cut here ]------------ kernel BUG at fs/reiserfs/lock.c:44! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13514 Comm: syz-executor.4 Not tainted 4.19.50 #22 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:reiserfs_write_unlock+0xeb/0x110 fs/reiserfs/lock.c:44 Code: 5d c3 e8 28 a8 89 ff 48 8d 7b 28 48 c7 83 a8 00 00 00 00 00 00 00 e8 d4 f5 0c 05 e8 0f a8 89 ff 5b 41 5c 5d c3 e8 05 a8 89 ff <0f> 0b e8 ae 0b c0 ff eb a1 e8 c7 0b c0 ff e9 33 ff ff ff e8 bd 0b RSP: 0018:ffff888095c27a88 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88809a0ad200 RCX: ffffc9000e6cb000 RDX: 0000000000040000 RSI: ffffffff81e15edb RDI: ffff88809a0ad2a8 RBP: ffff888095c27a98 R08: 0000000000000065 R09: ffffed1015d24fe9 R10: ffffed1015d24fe8 R11: ffff8880ae927f47 R12: 00000000ffffffea R13: ffff8880a99b0780 R14: ffff888095c27c38 R15: ffff88809a0ad200 FS: 00007f6c58fe1700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 00000000a877e000 CR4: 00000000001406e0 Call Trace: reiserfs_fill_super+0x2b51/0x2eb0 fs/reiserfs/super.c:2219 mount_bdev+0x304/0x3c0 fs/super.c:1158 get_super_block+0x35/0x40 fs/reiserfs/super.c:2605 mount_fs+0xa8/0x32b fs/super.c:1261 vfs_kern_mount.part.0+0x6f/0x410 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x53e/0x2bc0 fs/namespace.c:2799 ksys_mount+0xdb/0x150 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3026 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45bcca Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d 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 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f6c58fe0a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6c58fe0b40 RCX: 000000000045bcca RDX: 00007f6c58fe0ae0 RSI: 00000000200003c0 RDI: 00007f6c58fe0b00 RBP: 0000000000000000 R08: 00007f6c58fe0b40 R09: 00007f6c58fe0ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c82a5 R14: 00000000004deaf0 R15: 0000000000000003 Modules linked in: kobject: 'loop2' (0000000056ac66f2): kobject_uevent_env kobject: 'loop2' (0000000056ac66f2): fill_kobj_path: path = '/devices/virtual/block/loop2' ---[ end trace f52773a3f290d5b0 ]--- kobject: 'loop2' (0000000056ac66f2): kobject_uevent_env RIP: 0010:reiserfs_write_unlock+0xeb/0x110 fs/reiserfs/lock.c:44 kobject: 'loop2' (0000000056ac66f2): fill_kobj_path: path = '/devices/virtual/block/loop2' Code: 5d c3 e8 28 a8 89 ff 48 8d 7b 28 48 c7 83 a8 00 00 00 00 00 00 00 e8 d4 f5 0c 05 e8 0f a8 89 ff 5b 41 5c 5d c3 e8 05 a8 89 ff <0f> 0b e8 ae 0b c0 ff eb a1 e8 c7 0b c0 ff e9 33 ff ff ff e8 bd 0b kobject: 'loop4' (00000000345d5874): kobject_uevent_env RSP: 0018:ffff888095c27a88 EFLAGS: 00010246 kobject: 'loop4' (00000000345d5874): fill_kobj_path: path = '/devices/virtual/block/loop4' RAX: 0000000000040000 RBX: ffff88809a0ad200 RCX: ffffc9000e6cb000 RDX: 0000000000040000 RSI: ffffffff81e15edb RDI: ffff88809a0ad2a8 RBP: ffff888095c27a98 R08: 0000000000000065 R09: ffffed1015d24fe9 R10: ffffed1015d24fe8 R11: ffff8880ae927f47 R12: 00000000ffffffea R13: ffff8880a99b0780 R14: ffff888095c27c38 R15: ffff88809a0ad200 FS: 00007f6c58fe1700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738000 CR3: 00000000a877e000 CR4: 00000000001406e0