watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.4:25597] Modules linked in: irq event stamp: 14597213 hardirqs last enabled at (14597212): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 hardirqs last disabled at (14597213): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (5764326): [] invoke_softirq kernel/softirq.c:221 [inline] softirqs last enabled at (5764326): [] __irq_exit_rcu kernel/softirq.c:422 [inline] softirqs last enabled at (5764326): [] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 softirqs last disabled at (5764329): [] invoke_softirq kernel/softirq.c:221 [inline] softirqs last disabled at (5764329): [] __irq_exit_rcu kernel/softirq.c:422 [inline] softirqs last disabled at (5764329): [] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 CPU: 1 PID: 25597 Comm: syz-executor.4 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x78f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1525 Code: bb a4 3c 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 36 09 00 00 44 0f b6 bb a4 3c 00 00 <31> ff 44 89 fe e8 37 c1 55 fc 45 84 ff 0f 84 77 ff ff ff e8 79 ba RSP: 0018:ffffc90000dc0ba8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88802d0531e0 RCX: 0000000000000100 RDX: 0000000000000004 RSI: ffffffff851e36b3 RDI: ffff88802d056e84 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: ffffffff851e36e9 R11: 0000000000000000 R12: ffff8880267538c0 R13: ffff88802764b410 R14: ffff88802764b1e0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1775d13718 CR3: 0000000072f3a000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1775 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1829 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1852 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 invoke_softirq kernel/softirq.c:221 [inline] __irq_exit_rcu kernel/softirq.c:422 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 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:632 RIP: 0010:mm_update_next_owner+0x432/0x7a0 kernel/exit.c:388 Code: 8d ad b0 fb ff ff 48 81 fd 50 c8 cb 8b 0f 84 65 01 00 00 e8 90 3b 2f 00 48 8d bd dc fb ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 02 00 00 44 RSP: 0018:ffffc90001d07b18 EFLAGS: 00000a07 RAX: 1ffff11004057005 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8144b5e0 RDI: ffff8880202b802c RBP: ffff8880202b8450 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff8144b61f R11: 0000000000000001 R12: ffff888078cc8e00 R13: ffff8880202b8000 R14: 0000000000200000 R15: ffff888011128010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb02/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x42c/0x2100 kernel/signal.c:2777 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 Code: Unable to access opcode bytes at RIP 0x46642f. RSP: 002b:00007f1b6e866188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: 00000000000049f2 RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 000000000000e869 RSI: 0000000020000440 RDI: 0000000000000003 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffff84661df R14: 00007f1b6e866300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 25599 Comm: syz-executor.4 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x131/0x270 kernel/locking/qrwlock.c:76 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 fe 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 4a 3d 5d 00 eb RSP: 0018:ffffc90001d17a60 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8bc0a080 RCX: ffffffff815a642a RDX: fffffbfff1781411 RSI: 0000000000000004 RDI: ffffffff8bc0a080 RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8bc0a083 R10: fffffbfff1781410 R11: 0000000000000000 R12: 1ffff920003a2f4d R13: ffffffff8bc0a084 R14: 0000000000000003 R15: fffffbfff1781410 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f36c3ef9020 CR3: 00000000519c3000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:97 [inline] do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207 exit_notify kernel/exit.c:667 [inline] do_exit+0xc4a/0x2a60 kernel/exit.c:845 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x42c/0x2100 kernel/signal.c:2777 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 Code: Unable to access opcode bytes at RIP 0x46642f. RSP: 002b:00007f1b6e845218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000056c010 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c010 RBP: 000000000056c008 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c014 R13: 00007ffff84661df R14: 00007f1b6e845300 R15: 0000000000022000