VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. BUG: spinlock bad magic on CPU#1, systemd-udevd/8412 lock: 0xffff88800010f898, .magic: 00000000, .owner: /-1, .owner_cpu: -1 CPU: 1 PID: 8412 Comm: systemd-udevd Not tainted 4.14.232-syzkaller #0 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 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] do_raw_spin_lock+0x18e/0x200 kernel/locking/spinlock_debug.c:112 spin_lock include/linux/spinlock.h:317 [inline] zap_pte_range mm/memory.c:1315 [inline] zap_pmd_range mm/memory.c:1456 [inline] zap_pud_range mm/memory.c:1485 [inline] zap_p4d_range mm/memory.c:1506 [inline] unmap_page_range+0x887/0x1ce0 mm/memory.c:1527 unmap_single_vma+0x147/0x2b0 mm/memory.c:1572 unmap_vmas+0x9d/0x160 mm/memory.c:1602 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:930 [inline] mmput kernel/fork.c:951 [inline] mmput+0xfa/0x420 kernel/fork.c:946 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 SYSC_exit_group kernel/exit.c:976 [inline] SyS_exit_group+0x19/0x20 kernel/exit.c:974 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f82ad4f8618 RSP: 002b:00007ffd9003ef48 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ffd9003f010 RCX: 00007f82ad4f8618 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007ffd9003f0c0 R08: 00000000000000e7 R09: fffffffffffffe50 R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop5 VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. EXT4-fs warning (device sda1): verify_group_input:131: Cannot add at group 9 (only 16 groups) VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. netlink: 84 bytes leftover after parsing attributes in process `syz-executor.5'. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. FAT-fs (loop5): Unrecognized mount option "context=staff_u" or missing value VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. NFS: bad mount option value specified: v7 VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. qnx4: no qnx4 filesystem (no root dir). VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. qnx4: no qnx4 filesystem (no root dir). VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4. VFS: unable to read V7 FS superblock on device loop4. VFS: could not find a valid V7 on loop4.