watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz-executor.5:20421] Modules linked in: irq event stamp: 12943227 hardirqs last enabled at (12943226): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 hardirqs last disabled at (12943227): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (7630012): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (7630012): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 softirqs last disabled at (7630015): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (7630015): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 CPU: 0 PID: 20421 Comm: syz-executor.5 Not tainted 5.14.0-rc7-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+0x737/0x1330 drivers/net/wireless/mac80211_hwsim.c:1517 Code: b6 44 24 08 84 c0 0f 85 a8 06 00 00 e8 b2 2e 43 fc e8 ad 2e 43 fc 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 93 09 00 00 48 8b 1b <48> 81 fb a0 e3 77 8c 0f 84 f7 04 00 00 e8 87 2e 43 fc 49 39 de 4c RSP: 0018:ffffc90000007ba0 EFLAGS: 00000246 RAX: 1ffff11005f87654 RBX: ffff8880687a32a0 RCX: 0000000000000100 RDX: ffff88801a698000 RSI: ffffffff85327a43 RDI: 0000000000000003 RBP: dffffc0000000000 R08: 000000000000000d R09: 0000000000000000 R10: ffffffff85327ab9 R11: 0000000000000000 R12: ffff888092221500 R13: ffff8880619f34d0 R14: ffff8880619f32a0 R15: 0000000000000000 FS: 00007f664a939700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f02f7252710 CR3: 0000000089f8f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838 __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:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6326 Code: 55 53 65 48 8b 1c 25 40 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 02 80 23 f8 e8 1d cc 4f f8 fb bf 01 00 00 00 d2 cd ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 10 6f 23 RSP: 0018:ffffc900018ff168 EFLAGS: 00000206 RAX: 000000000001a4c5 RBX: ffff88801a698000 RCX: 1ffffffff1fa3622 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffed10034d3000 R08: 0000000000000001 R09: ffffffff8fcd599f R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 irqentry_exit+0x31/0x80 kernel/entry/common.c:427 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390 Code: 1d 9d a5 bb 7e 65 8b 05 96 a5 bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 85 2a 09 00 e8 70 87 35 00 fb 65 8b 05 78 a5 bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 c6 ac bb 7e 85 c0 75 a2 0f 0b eb 9e RSP: 0018:ffffc900018ff230 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 00000000fffffe01 RCX: 1ffffffff1fa3622 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff87a9cf0a R08: 0000000000000001 R09: ffffffff8fcd599f R10: 0000000000000001 R11: 0000000000000001 R12: 1ffff9200031fe53 R13: ffffc900018ff348 R14: ffffc900018ff3a8 R15: ffffffff8d1fbf40 local_bh_enable include/linux/bottom_half.h:32 [inline] __icmp_send+0xbd0/0x13c0 net/ipv4/icmp.c:775 icmp_send include/net/icmp.h:43 [inline] ip_fragment.constprop.0+0x1ea/0x240 net/ipv4/ip_output.c:588 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x2de/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x32/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8d3/0x1a30 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x1891/0x3900 net/ipv4/tcp_output.c:1405 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline] tcp_write_xmit+0xdee/0x6030 net/ipv4/tcp_output.c:2690 __tcp_push_pending_frames+0xaa/0x390 net/ipv4/tcp_output.c:2874 tcp_sendmsg_locked+0x2431/0x2f10 net/ipv4/tcp.c:1410 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1461 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:821 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:723 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2394 ___sys_sendmsg+0xf3/0x170 net/socket.c:2448 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2477 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: 0033:0x4665f9 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:00007f664a939188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000006d70 RSI: 0000000020001400 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff7877918f R14: 00007f664a939300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20431 Comm: syz-executor.3 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__hrtimer_run_queues+0x386/0xe50 kernel/time/hrtimer.c:1598 Code: 24 78 e8 cd 3d 10 00 48 8d 7b 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 6c 09 00 00 4c 8b 63 20 <48> 89 ee 4c 89 e7 e8 6f 43 10 00 49 39 ec 0f 8f 6d 07 00 00 e8 91 RSP: 0018:ffffc90000dc07a8 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff88802c15cc00 RCX: 0000000000000100 RDX: 1ffff1100582b984 RSI: ffffffff81656b23 RDI: ffff88802c15cc20 RBP: 16a206b1f842d033 R08: 000000000000001f R09: 0000000000000001 R10: ffffffff816568bb R11: 0000000000000000 R12: 16a2287b96e8a3d0 R13: ffff8880b9d42500 R14: ffff8880b9d42400 R15: 0000000000000001 FS: 00007fc800cfb700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffbb2e9210 CR3: 000000008c879000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x3ba/0xb40 kernel/locking/qspinlock.c:508 Code: eb c6 45 01 01 41 bc 00 80 00 00 48 c1 e9 03 83 e3 07 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 <41> 83 ec 01 0f 84 72 04 00 00 41 0f b6 45 00 38 d8 7f 08 84 c0 0f RSP: 0018:ffffc90000dc0a30 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff18efc7c RDX: 0000000000000001 RSI: ffffffff817bd241 RDI: ffffffff81332591 RBP: ffffffff8c77e3e0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817bd209 R11: 0000000000000080 R12: 0000000000001dd5 R13: fffffbfff18efc7c R14: 0000000000000001 R15: ffff8880b9d52900 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1516 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838 __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:lock_is_held_type+0xf/0x140 kernel/locking/lockdep.c:5653 Code: 44 24 04 e8 f1 c7 bd ff 0f 0b 8b 44 24 04 eb bd 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 bd ff ff ff ff 41 54 55 <53> 48 83 ec 08 8b 0d 52 3c 42 04 85 c9 0f 84 d7 00 00 00 65 8b 05 RSP: 0018:ffffc9000186fa20 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffc9000cf6a000 RDX: 1ffffffff1730a26 RSI: 00000000ffffffff RDI: ffffffff8b97c1c0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff81d7aff3 R11: 0000000000000000 R12: 0000000000000001 R13: 00000000ffffffff R14: 00000000000003a5 R15: ffff888038ea42b8 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125 trace_block_touch_buffer include/trace/events/block.h:45 [inline] touch_buffer fs/buffer.c:62 [inline] __find_get_block+0x9a9/0xdb0 fs/buffer.c:1312 sb_find_get_block include/linux/buffer_head.h:340 [inline] recently_deleted fs/ext4/ialloc.c:687 [inline] find_inode_bit+0x230/0x580 fs/ext4/ialloc.c:729 __ext4_new_inode+0xc4d/0x5c40 fs/ext4/ialloc.c:1064 ext4_mkdir+0x33a/0xb20 fs/ext4/namei.c:2921 vfs_mkdir+0x52e/0x760 fs/namei.c:3823 do_mkdirat+0x284/0x310 fs/namei.c:3848 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: 0033:0x4665f9 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:00007fc800cfb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff538dd45f R14: 00007fc800cfb300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: b6 44 mov $0x44,%dh 2: 24 08 and $0x8,%al 4: 84 c0 test %al,%al 6: 0f 85 a8 06 00 00 jne 0x6b4 c: e8 b2 2e 43 fc callq 0xfc432ec3 11: e8 ad 2e 43 fc callq 0xfc432ec3 16: 48 89 d8 mov %rbx,%rax 19: 48 c1 e8 03 shr $0x3,%rax 1d: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 21: 0f 85 93 09 00 00 jne 0x9ba 27: 48 8b 1b mov (%rbx),%rbx * 2a: 48 81 fb a0 e3 77 8c cmp $0xffffffff8c77e3a0,%rbx <-- trapping instruction 31: 0f 84 f7 04 00 00 je 0x52e 37: e8 87 2e 43 fc callq 0xfc432ec3 3c: 49 39 de cmp %rbx,%r14 3f: 4c rex.WR