watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.3:1033] Modules linked in: irq event stamp: 12655533 hardirqs last enabled at (12655532): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 hardirqs last disabled at (12655533): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (11606012): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last enabled at (11606012): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 softirqs last disabled at (11606015): [] invoke_softirq kernel/softirq.c:433 [inline] softirqs last disabled at (11606015): [] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 CPU: 0 PID: 1033 Comm: syz-executor.3 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:164 [inline] RIP: 0010:unwind_next_frame+0x276/0x1ce0 arch/x86/kernel/unwind_orc.c:443 Code: 48 89 54 24 30 48 89 74 24 28 44 89 5c 24 20 e8 d0 6a 85 00 48 8b 54 24 30 48 8b 74 24 28 44 8b 5c 24 20 8b 0c 95 c4 28 dd 8e <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 c4 28 dd 8e 49 RSP: 0018:ffffc90000007688 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 1ffff92000000ed9 RCX: 00000000000db9bd RDX: 000000000004284d RSI: 000000000004284d RDI: ffffffff8eedc9f8 RBP: 0000000000000002 R08: ffffffff8bdf2980 R09: 0000000000000001 R10: fffff52000000ef7 R11: 0000000000084087 R12: ffffc900000077a8 R13: ffffc90000007795 R14: ffffc90000007760 R15: ffffffff85284dfe FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f394db069d0 CR3: 000000014e098000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] __kasan_slab_alloc+0x81/0xa0 mm/kasan/common.c:461 kasan_slab_alloc include/linux/kasan.h:236 [inline] slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc_node mm/slab.c:3261 [inline] kmem_cache_alloc_node+0x333/0x590 mm/slab.c:3599 __alloc_skb+0x20b/0x340 net/core/skbuff.c:413 skb_copy+0x137/0x2f0 net/core/skbuff.c:1562 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1563 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:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 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:647 RIP: 0010:mm_update_next_owner+0x49b/0x7a0 kernel/exit.c:391 Code: 03 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 f7 02 00 00 48 8b ad d0 03 00 00 4c 8d 7d 10 4c 89 f8 48 c1 e8 03 80 3c 18 00 <0f> 85 ce 02 00 00 48 8b 45 10 48 8d a8 e8 f9 ff ff 49 39 c7 75 47 RSP: 0018:ffffc900168dfb00 EFLAGS: 00000246 RAX: 1ffff11007623462 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888050cba1c0 RSI: ffffffff81449ebd RDI: ffff888089ad8820 RBP: ffff88803b11a300 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff81449eaf R11: 0000000000000000 R12: ffff888034e3e8c0 R13: ffff888089ad8000 R14: 0000000000000000 R15: ffff88803b11a310 exit_mm kernel/exit.c:501 [inline] do_exit+0xb02/0x2a60 kernel/exit.c:813 do_group_exit+0x125/0x310 kernel/exit.c:923 get_signal+0x47f/0x2150 kernel/signal.c:2818 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+0x171/0x280 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 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: Unable to access opcode bytes at RIP 0x4665cf. RSP: 002b:00007f394db06188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000006 RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc0c57982f R14: 00007f394db06300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1074 Comm: kworker/u4:0 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x13b/0x2c0 kernel/locking/qrwlock.c:78 Code: 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 14 57 5e 00 eb de 48 89 df RSP: 0018:ffffc90016d5fcb8 EFLAGS: 00000006 RAX: 0000000000000000 RBX: ffffffff8bc0a080 RCX: ffffffff815a2fbf RDX: fffffbfff1781411 RSI: 0000000000000004 RDI: ffffffff8bc0a080 RBP: 1ffff92002dabf98 R08: 0000000000000001 R09: ffffffff8bc0a083 R10: fffffbfff1781410 R11: 0000000000000000 R12: ffffffff8bc0a084 R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff1781410 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f11e731c718 CR3: 000000007a711000 CR4: 00000000001526e0 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 exit_notify kernel/exit.c:668 [inline] do_exit+0xc4a/0x2a60 kernel/exit.c:846 call_usermodehelper_exec_async+0x418/0x580 kernel/umh.c:125 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294