watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz-executor.1:30113] Modules linked in: irq event stamp: 23662073 hardirqs last enabled at (23662072): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:664 hardirqs last disabled at (23662073): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (20319990): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (20319990): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 softirqs last disabled at (20319993): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (20319993): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 CPU: 0 PID: 30113 Comm: syz-executor.1 Not tainted 5.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5593 Code: cf a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc90000007600 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92000000ec2 RCX: ab7744b8d548444c RDX: 1ffff1100e25bbd5 RSI: 0000000000000101 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fcd48e7 R10: fffffbfff1f9a91c R11: 0000000000086088 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8b97c280 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000190c708 CR3: 000000014ec6d000 CR4: 0000000000350ef0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:267 [inline] rcu_read_lock include/linux/rcupdate.h:687 [inline] is_bpf_text_address+0x36/0x170 kernel/bpf/core.c:706 kernel_text_address kernel/extable.c:151 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 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:434 [inline] __kasan_slab_alloc+0x84/0xa0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:2959 [inline] kmem_cache_alloc_node+0x266/0x3e0 mm/slub.c:2995 __alloc_skb+0x20b/0x340 net/core/skbuff.c:414 __netdev_alloc_skb+0x73/0x400 net/core/skbuff.c:493 netdev_alloc_skb include/linux/skbuff.h:2872 [inline] dev_alloc_skb include/linux/skbuff.h:2885 [inline] __ieee80211_beacon_get+0xdfa/0x1ac0 net/mac80211/tx.c:5061 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:mm_update_next_owner+0x49b/0x7a0 kernel/exit.c:390 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:ffffc9001ab17b60 EFLAGS: 00000246 RAX: 1ffff11004ede682 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff8880712dd4c0 RSI: ffffffff8145df7d RDI: ffff88803a3040a0 RBP: ffff8880276f3400 R08: 0000000000000000 R09: ffffffff8b60a083 R10: ffffffff8145df6f R11: 0000000000000000 R12: ffff888086bf4600 R13: ffff88803a303880 R14: 0000000000000000 R15: ffff8880276f3410 exit_mm kernel/exit.c:500 [inline] do_exit+0xada/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x47f/0x2160 kernel/signal.c:2808 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209 irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:315 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0033:0x40d7e4 Code: Unable to access opcode bytes at RIP 0x40d7ba. RSP: 002b:00007f26181931a0 EFLAGS: 00000202 RAX: 00000000004c0b60 RBX: 000000000056bf88 RCX: ffffffffffffffbc RDX: 00000000004fc8e0 RSI: 00007f26181931c0 RDI: 0000000000000001 RBP: 000000000056bf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf8c R13: 00007ffd7aae224f R14: 00007f2618193300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 30120 Comm: syz-executor.3 Not tainted 5.14.0-rc5-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 04 3d 60 00 eb RSP: 0018:ffffc9001ad17cd8 EFLAGS: 00000006 RAX: 0000000000000300 RBX: ffffffff8b60a080 RCX: ffffffff815ba45f RDX: fffffbfff16c1411 RSI: 0000000000000004 RDI: ffffffff8b60a080 RBP: 1ffff920035a2f9c R08: 0000000000000001 R09: ffffffff8b60a083 R10: fffffbfff16c1410 R11: 0000000000000000 R12: ffffffff8b60a084 R13: 00000000000000ff R14: 0000000000000003 R15: fffffbfff16c1410 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000568000 CR3: 00000001590a1000 CR4: 0000000000350ee0 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+0xc19/0x2a60 kernel/exit.c:845 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 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: Unable to access opcode bytes at RIP 0x4665bf. RSP: 002b:00007ffe54e581d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665e9 RDX: 00000000004193fb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2c92001c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffe54e582d0 ---------------- Code disassembly (best guess): 0: cf iret 1: a6 cmpsb %es:(%rdi),%ds:(%rsi) 2: 7e 83 jle 0xffffff87 4: f8 clc 5: 01 0f add %ecx,(%rdi) 7: 85 b4 02 00 00 9c 58 test %esi,0x589c0000(%rdx,%rax,1) e: f6 c4 02 test $0x2,%ah 11: 0f 85 9f 02 00 00 jne 0x2b6 17: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp) 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24