netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. INFO: task syz-executor.5:12379 blocked for more than 140 seconds. Not tainted 4.19.142-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29080 12379 6488 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 request_wait_answer+0x3dc/0x750 fs/fuse/dev.c:485 __fuse_request_send+0x123/0x1c0 fs/fuse/dev.c:505 fuse_simple_request+0x2e6/0x820 fs/fuse/dev.c:576 fuse_do_getattr+0x230/0xc50 fs/fuse/dir.c:927 fuse_update_get_attr fs/fuse/dir.c:960 [inline] fuse_getattr+0x261/0x2e0 fs/fuse/dir.c:1838 vfs_getattr_nosec+0xff/0x160 fs/stat.c:79 vfs_getattr fs/stat.c:116 [inline] vfs_statx+0x15a/0x210 fs/stat.c:189 vfs_stat include/linux/fs.h:3129 [inline] __do_sys_newstat fs/stat.c:337 [inline] __se_sys_newstat+0x96/0x120 fs/stat.c:333 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d5b9 Code: e8 bc 4d fa ff 0f b6 44 24 18 eb cd c6 44 24 40 00 48 8b 6c 24 20 48 83 c4 28 c3 e8 41 7b 00 00 e9 fc fe ff ff cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 RSP: 002b:00007f46f8d44c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000033880 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200004c0 RBP: 000000000118cf78 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffd08e10f3f R14: 00007f46f8d459c0 R15: 000000000118cf4c Showing all locks held in the system: 1 lock held by khungtaskd/1090: #0: 0000000048becb79 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1090 Comm: khungtaskd Not tainted 4.19.142-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3706 Comm: systemd-journal Not tainted 4.19.142-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: 39 8e 87 4c 89 25 dc 2b 28 0a 41 bc f4 ff ff ff e8 80 0c eb ff 48 c7 05 c6 2b 28 0a 00 00 00 00 e9 39 ec ff ff 90 48 8b 34 24 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 3c 3c 98 7e 81 e2 00 01 1f 00 RSP: 0018:ffff888093df7998 EFLAGS: 00000246 RAX: ffff888093df79d8 RBX: 0000000000000000 RCX: ffffffff831df198 RDX: 0000000000000000 RSI: ffffffff831df25d RDI: 0000000000000005 RBP: ffff888219f00230 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: 1ffff110127bef37 R14: 0000000000800000 R15: 0000000000000080 FS: 00007fcd99a3a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcd96e7d010 CR3: 0000000093f4c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: avc_audit_required security/selinux/include/avc.h:71 [inline] selinux_inode_permission+0x52d/0x700 security/selinux/hooks.c:3226 security_inode_permission+0x92/0xf0 security/security.c:704 inode_permission.part.0+0x104/0x450 fs/namei.c:459 inode_permission fs/namei.c:432 [inline] may_lookup fs/namei.c:1697 [inline] link_path_walk.part.0+0x1a0/0x1230 fs/namei.c:2085 link_path_walk fs/namei.c:2270 [inline] path_lookupat+0xe4/0x8d0 fs/namei.c:2318 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349 user_path_at include/linux/namei.h:57 [inline] do_faccessat+0x248/0x7a0 fs/open.c:397 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fcd98cf69c7 Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffce255a1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007ffce255d0d0 RCX: 00007fcd98cf69c7 RDX: 00007fcd99767a00 RSI: 0000000000000000 RDI: 000055ac768809a3 RBP: 00007ffce255a1f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffce255d0d0 R15: 00007ffce255a6e0