should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x2c1/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] register_shrinker+0x1ab/0x220 mm/vmscan.c:284 sget_userns+0x9aa/0xc10 fs/super.c:535 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 22382 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163 Kernel panic - not syncing: panic_on_warn set ... sget+0xd1/0x110 fs/super.c:572 mount_bdev+0xcd/0x360 fs/super.c:1107 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a10 fs/namespace.c:2902 SYSC_mount fs/namespace.c:3118 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3095 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f100538b61a RSP: 002b:00007f1003cfef88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 00007f100538b61a RDX: 0000000020000140 RSI: 00000000200001c0 RDI: 00007f1003cfefe0 RBP: 00007f1003cff020 R08: 00007f1003cff020 R09: 0000000020000140 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000140 R13: 00000000200001c0 R14: 00007f1003cfefe0 R15: 0000000020000280 CPU: 0 PID: 22382 Comm: syz-executor.4 Not tainted 4.14.277-syzkaller #0 befs: Unrecognized mount option "%^" or missing value Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 befs: (loop1): cannot parse mount options report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163 RSP: 0018:ffff888079ebfbc8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000861f000 RDX: 0000000000040000 RSI: ffffffff818759be RDI: ffff88808fecfcb0 RBP: ffff8880a660cec0 R08: ffffffff8b9d2758 R09: 0000000000000001 R10: 0000000000000000 R11: ffff8880a884a500 R12: ffff88808fecf800 R13: ffffffff89246dd0 R14: ffffffff88f45500 R15: dffffc0000000000 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 sget_userns+0x9c4/0xc10 fs/super.c:537 sget+0xd1/0x110 fs/super.c:572 ------------[ cut here ]------------ mount_bdev+0xcd/0x360 fs/super.c:1107 WARNING: CPU: 1 PID: 22384 at fs/block_dev.c:1838 blkdev_put+0x42a/0x4c0 fs/block_dev.c:1838 mount_fs+0x92/0x2a0 fs/super.c:1237 Modules linked in: vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a10 fs/namespace.c:2902 CPU: 1 PID: 22384 Comm: syz-executor.0 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88808ce4c6c0 task.stack: ffff88809da18000 RIP: 0010:blkdev_put+0x42a/0x4c0 fs/block_dev.c:1838 RSP: 0018:ffff88809da1fc88 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90005c0a000 RDX: 0000000000040000 RSI: ffffffff8194056a RDI: ffffffff88e12744 RBP: ffff8880b193b040 R08: ffffffff8b9b7958 R09: 000000000004018a SYSC_mount fs/namespace.c:3118 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3095 R10: ffff88808ce4cf70 R11: ffff88808ce4c6c0 R12: 0000000000000083 R13: ffff8880b193b058 R14: ffff8880b193b0e8 R15: ffff8880b193b158 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 FS: 00007f1003cff700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 entry_SYSCALL_64_after_hwframe+0x46/0xbb CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RIP: 0033:0x7f551d04761a CR2: 00007ffeafa75897 CR3: 00000000a8f90000 CR4: 00000000003406e0 RSP: 002b:00007f551b9baf88 EFLAGS: 00000206 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 00007f551d04761a DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RDX: 0000000020000140 RSI: 00000000200001c0 RDI: 00007f551b9bafe0 mount_bdev+0x1e5/0x360 fs/super.c:1149 RBP: 00007f551b9bb020 R08: 00007f551b9bb020 R09: 0000000020000140 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000140 mount_fs+0x92/0x2a0 fs/super.c:1237 R13: 00000000200001c0 R14: 00007f551b9bafe0 R15: 0000000020000280 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a10 fs/namespace.c:2902 SYSC_mount fs/namespace.c:3118 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3095 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f100538b61a RSP: 002b:00007f1003cfef88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 00007f100538b61a RDX: 0000000020000140 RSI: 00000000200001c0 RDI: 00007f1003cfefe0 RBP: 00007f1003cff020 R08: 00007f1003cff020 R09: 0000000020000140 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000140 R13: 00000000200001c0 R14: 00007f1003cfefe0 R15: 0000000020000280 Code: ff ff 4c 89 f7 e8 07 f9 ea ff e9 bb fc ff ff e8 fd f8 ea ff e9 14 fd ff ff 4c 89 f7 e8 f0 f8 ea ff e9 3a fd ff ff e8 36 41 c1 ff <0f> 0b e9 a5 fc ff ff e8 2a 41 c1 ff 0f 0b e9 fc fc ff ff e8 3e ---[ end trace 2cc21762bb7b28df ]--- Kernel Offset: disabled Rebooting in 86400 seconds..