watchdog: BUG: soft lockup - CPU#1 stuck for 133s! [syz-executor.3:25224] Modules linked in: irq event stamp: 18644785 hardirqs last enabled at (18644784): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:654 hardirqs last disabled at (18644785): [] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1096 softirqs last enabled at (17572074): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (17572077): [] asm_call_irq_on_stack+0xf/0x20 CPU: 1 PID: 25224 Comm: syz-executor.3 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:197 Code: 24 48 63 c9 e9 66 ff ff ff 4c 01 ca 49 89 13 e9 00 fd ff ff 66 0f 1f 84 00 00 00 00 00 65 8b 05 f9 25 8f 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 a9 00 01 ff 00 74 0e RSP: 0018:ffffc90000db0a38 EFLAGS: 00000246 RAX: 0000000000000101 RBX: 0000000000000007 RCX: 0000000000000101 RDX: 0000000000000000 RSI: ffffffff884cd5a2 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff884cd599 R11: 0000000000000000 R12: ffff888025a64030 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc90000db0b00 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f12d000 CR3: 000000004ba4f000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __rhashtable_lookup+0x3c2/0x780 include/linux/rhashtable.h:600 rhltable_lookup include/linux/rhashtable.h:688 [inline] sta_info_hash_lookup net/mac80211/sta_info.c:162 [inline] sta_info_get_bss+0x144/0x3f0 net/mac80211/sta_info.c:199 __ieee80211_rx_handle_packet net/mac80211/rx.c:4623 [inline] ieee80211_rx_list+0x1057/0x2430 net/mac80211/rx.c:4744 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4767 ieee80211_rx include/net/mac80211.h:4507 [inline] ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x1d7/0x2d0 kernel/softirq.c:555 __do_softirq+0x2bc/0xa29 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/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+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:mm_update_next_owner+0x407/0x7a0 kernel/exit.c:387 Code: 3d e9 9d 01 00 00 e8 88 af 2e 00 49 8d bd 50 04 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 f2 02 00 00 49 8b ad 50 04 00 00 <4c> 8d ad b0 fb ff ff 48 81 fd 90 c7 0b 8b 0f 84 65 01 00 00 e8 50 RSP: 0018:ffffc9000bcafb20 EFLAGS: 00000246 RAX: 1ffff11003a21af2 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff8880192f9bc0 RSI: ffffffff81441a38 RDI: ffff88801d10d790 RBP: ffff88801da70450 R08: 0000000000000000 R09: ffffffff8b00a083 R10: ffffffff81441aaf R11: 0000000000000001 R12: ffff888020764e00 R13: ffff88801d10d340 R14: 0000000000200000 R15: ffff888140750010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb62/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x3e9/0x20a0 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 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:201 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:315 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0033:0x45e219 Code: Unable to access opcode bytes at RIP 0x45e1ef. RSP: 002b:00007ffa95f57cf8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 000000000119bf88 RCX: 000000000045e219 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000119bf8c RBP: 000000000119bf80 R08: 000000000000000e R09: 0000000000000000 R10: 0000000020ffc000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffcbc42906f R14: 00007ffa95f589c0 R15: 000000000119bf8c Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 25233 Comm: syz-executor.3 Not tainted 5.11.0-rc3-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:77 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 2a fd 5b 00 eb RSP: 0018:ffffc9000bd2fa60 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8b00a080 RCX: ffffffff8159871a RDX: fffffbfff1601411 RSI: 0000000000000004 RDI: ffffffff8b00a080 RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8b00a083 R10: fffffbfff1601410 R11: 0000000000000000 R12: 1ffff920017a5f4d R13: ffffffff8b00a084 R14: 0000000000000003 R15: fffffbfff1601410 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000778008 CR3: 000000004ba4f000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:95 [inline] do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207 exit_notify kernel/exit.c:667 [inline] do_exit+0xcaa/0x2ae0 kernel/exit.c:845 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x3e9/0x20a0 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 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:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:289 RIP: 0033:0x460be9 Code: Unable to access opcode bytes at RIP 0x460bbf. RSP: 002b:00007ffa95f36db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: 0000000000000000 RBX: 00007ffa95f37700 RCX: 0000000000460be9 RDX: 00007ffa95f379d0 RSI: 00007ffa95f36db0 RDI: 00000000003d0f00 RBP: 00007ffcbc4291d0 R08: 00007ffa95f37700 R09: 00007ffa95f37700 R10: 00007ffa95f379d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffcbc42906f R14: 00007ffa95f379c0 R15: 000000000119c034