watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:5362] Modules linked in: irq event stamp: 4283819 hardirqs last enabled at (4283818): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4283819): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4268168): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4268171): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5362 Comm: syz-executor.3 Not tainted 5.10.230 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__iterate_interfaces+0x4d/0x550 net/mac80211/util.c:774 Code: 24 18 48 89 7c 24 10 89 74 24 04 48 89 4c 24 20 e8 28 78 7d fd 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 b0 04 00 00 48 8b 44 24 10 48 8b 98 78 19 00 00 4c 39 f3 0f RSP: 0018:ffff88806ce09d88 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffff88804835b1c0 RDX: 1ffff1100906b4cf RSI: ffffffff83c34658 RDI: ffff888048358d00 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8686a6e7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048358d00 R13: ffffffff82c9c5c0 R14: ffff88804835a678 R15: 0000000000000002 FS: 00007f85885c4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d121000 CR3: 000000000feb2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:debug_lockdep_rcu_enabled+0x12/0x30 kernel/rcu/update.c:278 Code: 30 5d 1c 7c 00 00 00 f0 e9 0b fd 39 00 cc cc cc cc cc cc cc cc cc cc cc 8b 05 9e 35 81 01 85 c0 74 21 8b 05 ec 44 81 01 85 c0 <74> 17 65 48 8b 04 25 80 6f 02 00 8b 80 44 09 00 00 85 c0 0f 94 c0 RSP: 0018:ffff888037357ee0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffff888046d78000 RCX: 000000005504a855 RDX: 1ffff11008e1f128 RSI: 14d40efed4d3bed1 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8686a6e7 R10: 0000000000000246 R11: 0000000000000001 R12: ffff88801ad91f88 R13: 0000000000000001 R14: 0000000000000000 R15: ffff888046d78000 rcu_read_lock include/linux/rcupdate.h:718 [inline] __do_sys_getpriority+0x419/0xba0 kernel/sys.c:315 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f858b04eb19 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:00007f85885c4188 EFLAGS: 00000246 ORIG_RAX: 000000000000008c RAX: ffffffffffffffda RBX: 00007f858b161f60 RCX: 00007f858b04eb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 00007f858b0a8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3921b85f R14: 00007f85885c4300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5357 Comm: syz-executor.5 Not tainted 5.10.230 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_write_lock_slowpath+0x150/0x240 kernel/locking/qrwlock.c:79 Code: c1 ef 03 41 83 e6 07 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 db 00 00 00 8b 03 3d 00 01 00 00 74 19 f3 90 <41> 0f b6 07 41 38 c6 7c ec 84 c0 74 e8 48 89 df e8 eb a0 44 00 eb RSP: 0018:ffff88803be179d8 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff84e0a080 RCX: ffffffff81281308 RDX: fffffbfff09c1411 RSI: 0000000000000004 RDI: ffffffff84e0a080 RBP: 1ffff110077c2f3c R08: 0000000000000001 R09: ffffffff84e0a083 R10: fffffbfff09c1410 R11: 0000000000000001 R12: ffffffff84e0a084 R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff09c1410 FS: 00005555838fa400(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f72d06dc542 CR3: 0000000036eb6000 CR4: 0000000000350ee0 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:95 [inline] do_raw_write_lock+0x1d2/0x280 kernel/locking/spinlock_debug.c:207 copy_process+0x415a/0x7800 kernel/fork.c:2242 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_clone+0xc8/0x110 kernel/fork.c:2623 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f985d1bdf41 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007ffc3c2401f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f985a732700 RCX: 00007f985d1bdf41 RDX: 00007f985a7329d0 RSI: 00007f985a7322f0 RDI: 00000000003d0f00 RBP: 00007ffc3c240430 R08: 00007f985a732700 R09: 00007f985a732700 R10: 00007f985a7329d0 R11: 0000000000000206 R12: 00007ffc3c2402ae R13: 00007ffc3c2402af R14: 00007f985a732300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 24 18 and $0x18,%al 2: 48 89 7c 24 10 mov %rdi,0x10(%rsp) 7: 89 74 24 04 mov %esi,0x4(%rsp) b: 48 89 4c 24 20 mov %rcx,0x20(%rsp) 10: e8 28 78 7d fd callq 0xfd7d783d 15: 4c 89 f2 mov %r14,%rdx 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 b0 04 00 00 jne 0x4e0 <-- trapping instruction 30: 48 8b 44 24 10 mov 0x10(%rsp),%rax 35: 48 8b 98 78 19 00 00 mov 0x1978(%rax),%rbx 3c: 4c 39 f3 cmp %r14,%rbx 3f: 0f .byte 0xf