SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=11493 comm=syz-executor.0 hid-generic 0000:0000:0000.0019: unknown main item tag 0x0 list_add double add: new=ffff888056d6be18, prev=ffff888056d6be18, next=ffff88809282f2c0. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 11494 Comm: syz-executor.5 Not tainted 4.14.150 #0 kobject: 'loop0' (ffff888086942ea0): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88805294e5c0 task.stack: ffff888057210000 RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 RSP: 0000:ffff888057217768 EFLAGS: 00010286 kobject: 'loop0' (ffff888086942ea0): fill_kobj_path: path = '/devices/virtual/block/loop0' RAX: 0000000000000058 RBX: ffff88809282f280 RCX: 0000000000000000 RDX: 000000000000d8a1 RSI: ffffffff814b3f65 RDI: ffffed100ae42ee3 RBP: ffff888057217780 R08: 0000000000000058 R09: ffff88805294ee88 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809282f2c0 R13: ffff888056d6be18 R14: ffff888056d6be18 R15: ffff888056d6be18 FS: 00007f61d35f0700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 audit: type=1804 audit(1572031694.832:109): pid=11534 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir940329418/syzkaller.gT37sz/192/file0" dev="sda1" ino=17203 res=1 CR2: 000055f77316b000 CR3: 0000000099a5b000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] p9_fd_request+0xe3/0x2b0 net/9p/trans_fd.c:679 p9_client_rpc+0x21b/0x1180 net/9p/client.c:774 audit: type=1800 audit(1572031694.832:110): pid=11534 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="file0" dev="sda1" ino=17203 res=0 p9_client_clunk+0x89/0x150 net/9p/client.c:1507 v9fs_dentry_release+0x6d/0xd0 fs/9p/vfs_dentry.c:73 __dentry_kill+0x39a/0x580 fs/dcache.c:596 dentry_kill fs/dcache.c:632 [inline] dput.part.0+0x59f/0x750 fs/dcache.c:847 dput fs/dcache.c:811 [inline] do_one_tree+0x44/0x50 fs/dcache.c:1507 shrink_dcache_for_umount+0x67/0x140 fs/dcache.c:1521 generic_shutdown_super+0x6d/0x370 fs/super.c:431 kill_anon_super+0x3f/0x60 fs/super.c:1006 v9fs_kill_super+0x3e/0xa0 fs/9p/vfs_super.c:230 deactivate_locked_super+0x74/0xe0 fs/super.c:319 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=11538 comm=syz-executor.0 deactivate_super fs/super.c:350 [inline] deactivate_super+0x85/0xa0 fs/super.c:346 cleanup_mnt+0xb2/0x150 fs/namespace.c:1183 __cleanup_mnt+0x16/0x20 fs/namespace.c:1190 task_work_run+0x114/0x190 kernel/task_work.c:113 get_signal+0x18a8/0x1cd0 kernel/signal.c:2220 kobject: 'loop3' (ffff8880a4a5a0a0): kobject_uevent_env do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814 kobject: 'loop3' (ffff8880a4a5a0a0): fill_kobj_path: path = '/devices/virtual/block/loop3' exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459f39 RSP: 002b:00007f61d35efc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: fffffffffffffe00 RBX: 0000000000000002 RCX: 0000000000459f39 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000020000380 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f61d35f06d4 R13: 00000000004e773b R14: 00000000004e0888 R15: 00000000ffffffff Code: e9 56 ff ff ff 4c 89 e1 48 c7 c7 20 33 9d 86 e8 bf c2 72 fe 0f 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 60 34 9d 86 e8 a8 c2 72 fe <0f> 0b 48 89 f1 48 c7 c7 e0 33 9d 86 4c 89 e6 e8 94 c2 72 fe 0f kobject: 'loop3' (ffff8880a4a5a0a0): kobject_uevent_env RIP: __list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 RSP: ffff888057217768 ---[ end trace 0bd497a1d394f54c ]---