netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. Process accounting resumed watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:4033] Modules linked in: irq event stamp: 94310698 hardirqs last enabled at (94310697): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (94310697): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (94310698): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (2738): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2687): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4033 Comm: syz-executor.6 Not tainted 5.10.155 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191 Code: 3e 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 5a f4 44 fd 48 89 ef e8 32 ae 45 fd f6 c7 02 75 10 53 9d <65> ff 0d 44 6f 20 7c 5b 5d e9 fd 3f 3e 00 e8 a8 79 64 fd eb e9 66 RSP: 0018:ffff88801ef87d00 EFLAGS: 00000202 RAX: 00000000059f1129 RBX: 0000000000000202 RCX: 1ffffffff0acdb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e20008 RBP: ffff888045142450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888045142450 R13: 1ffff11003df0fa5 R14: 0000000000000202 R15: ffff88801ef87ea8 FS: 00007f7eaa401700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d222000 CR3: 000000000e33e000 CR4: 0000000000350ef0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] prepare_to_wait_exclusive+0x129/0x2a0 kernel/sched/wait.c:273 io_cqring_wait fs/io_uring.c:7042 [inline] __do_sys_io_uring_enter+0x825/0x1920 fs/io_uring.c:9131 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f7eace8bb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7eaa401188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f7eacf9ef60 RCX: 00007f7eace8bb19 RDX: 0000000000004220 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f7eacee5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce003e9af R14: 00007f7eaa401300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4055 Comm: syz-executor.6 Not tainted 5.10.155 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x5a/0x1f0 mm/kasan/generic.c:192 Code: 87 c0 00 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 <49> 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e 14 01 00 00 41 89 RSP: 0018:ffff88804437fc40 EFLAGS: 00000082 RAX: ffffed100886ff91 RBX: ffff88804499a450 RCX: ffffffff8127ab61 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88804437fc88 RBP: ffffed100886ff91 R08: 0000000000000001 R09: ffff88804437fc8b R10: ffffed100886ff91 R11: 0000000000000001 R12: ffff88804499a458 R13: ffff88804499a460 R14: ffff88804499a450 R15: ffff88804437fea8 FS: 00007f7eaa3e0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f778d0e9250 CR3: 000000000e33e000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:706 [inline] queued_spin_lock include/asm-generic/qspinlock.h:82 [inline] do_raw_spin_lock+0x121/0x260 kernel/locking/spinlock_debug.c:113 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0x3e/0x60 kernel/locking/spinlock.c:159 prepare_to_wait_exclusive+0x7d/0x2a0 kernel/sched/wait.c:267 io_cqring_wait fs/io_uring.c:7042 [inline] __do_sys_io_uring_enter+0x825/0x1920 fs/io_uring.c:9131 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f7eace8bb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7eaa3e0188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f7eacf9f020 RCX: 00007f7eace8bb19 RDX: 0000000000004220 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f7eacee5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce003e9af R14: 00007f7eaa3e0300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 0f 1f 00 nopl (%rax) 3: 55 push %rbp 4: 48 89 fd mov %rdi,%rbp 7: 48 83 c7 18 add $0x18,%rdi b: 53 push %rbx c: 48 89 f3 mov %rsi,%rbx f: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 14: e8 5a f4 44 fd callq 0xfd44f473 19: 48 89 ef mov %rbp,%rdi 1c: e8 32 ae 45 fd callq 0xfd45ae53 21: f6 c7 02 test $0x2,%bh 24: 75 10 jne 0x36 26: 53 push %rbx 27: 9d popfq * 28: 65 ff 0d 44 6f 20 7c decl %gs:0x7c206f44(%rip) # 0x7c206f73 <-- trapping instruction 2f: 5b pop %rbx 30: 5d pop %rbp 31: e9 fd 3f 3e 00 jmpq 0x3e4033 36: e8 a8 79 64 fd callq 0xfd6479e3 3b: eb e9 jmp 0x26 3d: 66 data16