kmem_cache_zalloc include/linux/slab.h:651 [inline] get_empty_filp+0x86/0x3e0 fs/file_table.c:123 alloc_file+0x23/0x440 fs/file_table.c:164 sock_alloc_file+0x113/0x2e0 net/socket.c:416 sock_map_fd net/socket.c:439 [inline] SYSC_socket net/socket.c:1349 [inline] SyS_socket+0x108/0x1b0 net/socket.c:1325 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6514 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163 Kernel panic - not syncing: panic_on_warn set ... do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f1d53b0bc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000029 RBP: 00007f1d53b0bca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00007ffcba7331ff R14: 00007f1d53b0c9c0 R15: 000000000119bf8c CPU: 1 PID: 6514 Comm: syz-executor.4 Not tainted 4.14.217-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 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 device batadv0 entered promiscuous mode report_bug+0x208/0x250 lib/bug.c:186 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 device batadv0 left promiscuous mode invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163 RSP: 0018:ffff88809184fbb0 EFLAGS: 00010246 device batadv0 left promiscuous mode RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90009be7000 RDX: 0000000000040000 RSI: ffffffff8186f5ae RDI: ffff8880b1be1c30 RBP: ffff888077f4a7c0 R08: ffffffff8b98a910 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809b54a1c0 R12: ffff8880b1be1780 R13: ffffffff891e0870 R14: ffffffff88f44f00 R15: dffffc0000000000 qnx4_kill_sb+0x38/0x90 fs/qnx4/inode.c:239 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 sget_userns+0x9c4/0xc10 fs/super.c:537 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:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x460c6a RSP: 002b:00007f9d5d7f0a78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9d5d7f0b10 RCX: 0000000000460c6a RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007f9d5d7f0ad0 RBP: 00007f9d5d7f0ad0 R08: 00007f9d5d7f0b10 R09: 0000000020000000 R10: 0000000000000001 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000080 R14: 00000000200003c0 R15: 00000000200024c0 Kernel Offset: disabled Rebooting in 86400 seconds..