watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz-executor.0:32448] Modules linked in: irq event stamp: 11053137 hardirqs last enabled at (11053136): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 hardirqs last disabled at (11053137): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (9010904): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (9010904): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 softirqs last disabled at (9010907): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (9010907): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 CPU: 1 PID: 32448 Comm: syz-executor.0 Not tainted 5.14.0-rc5-next-20210809-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rate_control_send_low+0x230/0x8e0 net/mac80211/rate.c:421 Code: 8e 07 05 00 00 45 8b a4 24 60 13 00 00 bf 07 00 00 00 44 89 e6 e8 60 af f2 f8 41 83 fc 07 0f 84 38 02 00 00 41 bf 01 00 00 00 0b a8 f2 f8 44 89 f8 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc90000dc0ac0 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff888019359c80 RDI: 0000000000000003 RBP: ffff888146829a00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff888300ce R11: 000000000000001f R12: 0000000000000000 R13: 000000000000000f R14: ffff888146a9a850 R15: 0000000000000001 FS: 00007f85f6721700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0a3b28740 CR3: 000000009c1a4000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rate_control_get_rate+0x1b9/0x5a0 net/mac80211/rate.c:912 __ieee80211_beacon_get+0xa87/0x1ac0 net/mac80211/tx.c:5148 ieee80211_beacon_get_tim+0x88/0x930 net/mac80211/tx.c:5175 ieee80211_beacon_get include/net/mac80211.h:4962 [inline] mac80211_hwsim_beacon_tx+0x111/0x930 drivers/net/wireless/mac80211_hwsim.c:1808 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1861 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:next_thread include/linux/sched/signal.h:679 [inline] RIP: 0010:chroot_fs_refs+0xb0/0x630 fs/fs_struct.c:82 Code: 48 89 45 a0 4c 8b 6d d0 eb 3e e8 9b 94 a0 ff 4c 89 e7 e8 c3 cd 5b 07 49 8d bd 08 06 00 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 40 04 00 00 49 8b 9d 08 06 00 00 4c 8d ab f8 f9 ff ff 4c 39 RSP: 0018:ffffc90016937d78 EFLAGS: 00000246 RAX: 1ffff11003aa00c1 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffff88801d500608 RBP: ffffc90016937df0 R08: 0000000000000000 R09: ffff88801d5008db R10: ffffed1003aa011b R11: 0000000000000000 R12: ffff88801d5008d8 R13: ffff88801d500000 R14: dffffc0000000000 R15: ffffffff8bb02180 __do_sys_pivot_root+0xfd7/0x1610 fs/namespace.c:3890 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 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:00007f85f6721188 EFLAGS: 00000246 ORIG_RAX: 000000000000009b RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000020000280 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe0eebe63f R14: 00007f85f6721300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2984 Comm: systemd-udevd Not tainted 5.14.0-rc5-next-20210809-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x137/0x2c0 kernel/locking/qrwlock.c:78 Code: 00 00 00 00 fc ff df 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 3e 01 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 34 ad 5f 00 eb RSP: 0018:ffffc90002bdf910 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8b60a080 RCX: ffffffff815b9b2f RDX: fffffbfff16c1411 RSI: 0000000000000004 RDI: ffffffff8b60a080 RBP: 1ffff9200057bf23 R08: 0000000000000001 R09: ffffffff8b60a083 R10: fffffbfff16c1410 R11: 0000000000000000 R12: ffffffff8b60a084 R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff16c1410 FS: 00007ff0a49f68c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ac845510e8 CR3: 0000000077860000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:97 [inline] do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207 release_task+0x21c/0x17e0 kernel/exit.c:196 wait_task_zombie kernel/exit.c:1107 [inline] wait_consider_task+0x2fa6/0x3b80 kernel/exit.c:1334 do_wait_thread kernel/exit.c:1397 [inline] do_wait+0x6ca/0xce0 kernel/exit.c:1514 kernel_wait4+0x14c/0x260 kernel/exit.c:1677 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ff0a3b3cb0a Code: 74 20 00 f7 d8 64 89 02 b8 ff ff ff ff eb d7 90 8b 05 ca b8 20 00 85 c0 75 36 48 63 d2 48 63 ff 45 31 d2 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 8b 15 69 74 20 00 f7 RSP: 002b:00007ffc2d028c48 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 00007ffc2d028ca0 RCX: 00007ff0a3b3cb0a RDX: 0000000000000001 RSI: 00007ffc2d028c54 RDI: ffffffffffffffff RBP: 000055ac84ee1010 R08: 0000000000000008 R09: 000055ac84ee71b8 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc2d028c54 R13: 000055ac84530718 R14: 000055ac84ef6400 R15: 0000000000000001