TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.7:6054] Modules linked in: irq event stamp: 7957575 hardirqs last enabled at (7957574): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (7957575): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (7917610): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (7917613): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 6054 Comm: syz-executor.7 Not tainted 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rate_control_send_low+0x2/0x680 net/mac80211/rate.c:346 Code: e9 90 fc ff ff e8 de 7c b1 fd e9 08 ff ff ff e8 f4 7c b1 fd e9 b2 fc ff ff e8 da 7c b1 fd e9 6e fd ff ff e8 60 f0 2a 00 41 57 <49> 89 ff 41 56 41 55 41 54 55 48 89 f5 53 48 89 cb 48 83 ec 40 48 RSP: 0018:ffff88806ce09ac8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806ce09bd0 RCX: ffff888043cb0668 RDX: 0000000000000000 RSI: ffff8880215731e8 RDI: ffff888021570d00 RBP: ffff88806ce09bd0 R08: 0000000000000fff R09: ffff88806ce09bd0 R10: 0000000000000004 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888043cb0640 R14: ffff888043cb0668 R15: ffff8880215731e8 FS: 00007f4aad978700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd5df968f0 CR3: 0000000049e16000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rate_control_send_low+0x1f2/0x600 net/mac80211/rate.c:400 rate_control_get_rate+0x18b/0x510 net/mac80211/rate.c:913 __ieee80211_beacon_get+0x773/0x1440 net/mac80211/tx.c:4961 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4988 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb90 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x885 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __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+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:compound_head include/linux/page-flags.h:185 [inline] RIP: 0010:unlock_page_memcg+0x1d/0x170 mm/memcontrol.c:2196 Code: 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 53 48 89 fb 48 83 c7 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 1b 01 00 00 48 8b 43 08 a8 01 48 8d 50 ff 48 b8 00 00 00 00 RSP: 0018:ffff88800e717690 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffea00011681c0 RCX: ffffc90007228000 RDX: 1ffffd400022d039 RSI: ffffffff8163e4fe RDI: ffffea00011681c8 RBP: ffffea00011681c0 R08: 0000000000000001 R09: ffffea00011681f3 R10: 0000000000000000 R11: 0000000000000001 R12: ffffea00011681c8 R13: ffff888048531bd8 R14: dffffc0000000000 R15: 00007f4aae97c000 zap_pte_range mm/memory.c:1287 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x1119/0x1ea0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1090 [inline] mmput+0xca/0x340 kernel/fork.c:1111 dup_mm+0xa46/0x1110 kernel/fork.c:1385 copy_mm kernel/fork.c:1425 [inline] copy_process+0x24e2/0x67f0 kernel/fork.c:2115 kernel_clone+0xe7/0xa50 kernel/fork.c:2498 __do_sys_fork+0x8a/0xc0 kernel/fork.c:2561 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f4ab0402b19 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:00007f4aad978188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f4ab0515f60 RCX: 00007f4ab0402b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f4ab045cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc89aa1bbf R14: 00007f4aad978300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 59 Comm: kworker/u4:1 Not tainted 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: phy14 ieee80211_iface_work RIP: 0010:lock_is_held_type+0xd2/0x110 kernel/locking/lockdep.c:5609 Code: 31 c0 41 f6 47 22 03 0f 95 c0 45 31 c0 44 39 f0 41 0f 94 c0 b8 ff ff ff ff 65 0f c1 05 37 ae 1c 7c 83 f8 01 75 27 ff 34 24 9d <48> 83 c4 08 44 89 c0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 58 6e 3a 00 RSP: 0018:ffff88800c8bf750 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff84ff8620 RDI: ffff88800c8b08e0 RBP: ffffffff84ff8620 R08: 0000000000000000 R09: ffffffff856728cf R10: fffffbfff0ace519 R11: 0000000000000001 R12: ffff88800c8b0000 R13: ffff88800c8b08b8 R14: 00000000ffffffff R15: ffff88800c8b08e0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556e4157d7c0 CR3: 000000000cd54000 CR4: 0000000000350ee0 Call Trace: lock_is_held include/linux/lockdep.h:282 [inline] rcu_read_lock_sched_held+0x3e/0x80 kernel/rcu/update.c:123 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x412/0x4a0 kernel/locking/lockdep.c:5536 __mutex_lock_common kernel/locking/mutex.c:968 [inline] __mutex_lock+0x13d/0x10b0 kernel/locking/mutex.c:1109 sdata_lock net/mac80211/ieee80211_i.h:1028 [inline] ieee80211_ibss_rx_queued_mgmt+0xdb/0x1900 net/mac80211/ibss.c:1635 ieee80211_iface_work+0x6e3/0x930 net/mac80211/iface.c:1453 process_one_work+0x9a9/0x15c0 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299 ---------------- Code disassembly (best guess): 0: e9 90 fc ff ff jmpq 0xfffffc95 5: e8 de 7c b1 fd callq 0xfdb17ce8 a: e9 08 ff ff ff jmpq 0xffffff17 f: e8 f4 7c b1 fd callq 0xfdb17d08 14: e9 b2 fc ff ff jmpq 0xfffffccb 19: e8 da 7c b1 fd callq 0xfdb17cf8 1e: e9 6e fd ff ff jmpq 0xfffffd91 23: e8 60 f0 2a 00 callq 0x2af088 28: 41 57 push %r15 * 2a: 49 89 ff mov %rdi,%r15 <-- trapping instruction 2d: 41 56 push %r14 2f: 41 55 push %r13 31: 41 54 push %r12 33: 55 push %rbp 34: 48 89 f5 mov %rsi,%rbp 37: 53 push %rbx 38: 48 89 cb mov %rcx,%rbx 3b: 48 83 ec 40 sub $0x40,%rsp 3f: 48 rex.W