netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting. ldm_validate_privheads(): Cannot find PRIVHEAD 1. loop3: p2 < > INFO: task syz-executor.5:10711 blocked for more than 140 seconds. Not tainted 4.14.194-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29480 10711 6389 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 request_wait_answer+0x30d/0x620 fs/fuse/dev.c:478 __fuse_request_send+0x108/0x1a0 fs/fuse/dev.c:498 fuse_request_send fs/fuse/dev.c:511 [inline] fuse_simple_request+0x2fa/0x790 fs/fuse/dev.c:569 fuse_do_getattr+0x209/0xb60 fs/fuse/dir.c:920 fuse_update_get_attr fs/fuse/dir.c:945 [inline] fuse_update_get_attr fs/fuse/dir.c:937 [inline] fuse_getattr+0x2e1/0x500 fs/fuse/dir.c:1823 vfs_getattr_nosec+0xff/0x160 fs/stat.c:79 vfs_getattr fs/stat.c:116 [inline] vfs_statx+0x104/0x180 fs/stat.c:189 vfs_stat include/linux/fs.h:3061 [inline] SYSC_newstat fs/stat.c:337 [inline] SyS_newstat+0x83/0xe0 fs/stat.c:333 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d579 RSP: 002b:00007f7d7b113c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000033880 RCX: 000000000045d579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200004c0 RBP: 000000000118cf78 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffca9a7e5ff R14: 00007f7d7b1149c0 R15: 000000000118cf4c Showing all locks held in the system: 1 lock held by khungtaskd/1069: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 1 lock held by in:imklog/6056: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:769 1 lock held by syz-executor.3/6390: #0: (&rq->lock){-.-.}, at: [] rq_lock kernel/sched/sched.h:1747 [inline] #0: (&rq->lock){-.-.}, at: [] __schedule+0x1df/0x1de0 kernel/sched/core.c:3321 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1069 Comm: khungtaskd Not tainted 4.14.194-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+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 27361 Comm: syz-executor.3 Not tainted 4.14.194-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888044b8e080 task.stack: ffff88809a7a0000 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline] RIP: 0010:__lock_acquire+0x128/0x3f20 kernel/locking/lockdep.c:3366 RSP: 0018:ffff8880aeb07c10 EFLAGS: 00000086 RAX: 1ffffffff0fa2d20 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880aeb25b98 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88821fff7057 R11: ffff888044b8e080 R12: ffff8880aeb25b98 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8a5a5c00 FS: 00007f28e3115700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f758bb9e740 CR3: 0000000092c91000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Code: 00 69 d1 87 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 9f 2a 00 00 48 83 3d bf 6d 8a 06 00 0f 84 22 0e 00 00 9c <58> 0f 1f 44 00 00 f6 c4 02 0f 85 60 0c 00 00 44 8b 15 62 f4 8f