netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. INFO: task syz-executor.1:17233 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27392 17233 8135 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 perf_event_free_task+0x4cf/0x660 kernel/events/core.c:11372 copy_process.part.0+0x3710/0x8260 kernel/fork.c:2137 copy_process kernel/fork.c:1710 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2219 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f70d95795a9 Code: Bad RIP value. RSP: 002b:00007f70d7e68118 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f70d969a2c0 RCX: 00007f70d95795a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f70d95d4580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2f6c88df R14: 00007f70d7e68300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 00000000f79ea100 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 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: 4695 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0033:0x7f80313a2b92 Code: 48 8b 15 09 33 2a 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 55 53 48 89 f5 89 fb 48 83 ec 08 48 8b 05 56 87 2a 00 <48> c1 c8 11 64 48 33 04 25 30 00 00 00 48 85 c0 74 2c ff d0 48 3d RSP: 002b:00007ffc514e4870 EFLAGS: 00000202 RAX: ae802edcdded35de RBX: 0000000000000001 RCX: 00000000000000f0 RDX: 00000000001db63b RSI: 00007ffc514e4890 RDI: 0000000000000001 RBP: 00007ffc514e4890 R08: 0000000000800000 R09: 0000000000000030 R10: fd56c3648b47f8ef R11: 422f2d600d68c81e R12: 000055f5fb45cb00 R13: 00007ffc514e49f0 R14: 00007ffc514e49e8 R15: 0000000020eb0389 FS: 00007f80320cd8c0 GS: 0000000000000000