watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:12508] Modules linked in: irq event stamp: 2127820 hardirqs last enabled at (2127819): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2127820): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2127486): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2127151): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2127151): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 12508 Comm: syz-executor.3 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:261 [inline] RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:123 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:436 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x3c1/0xae0 kernel/locking/qspinlock.c:474 Code: 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 41 83 ec 01 0f 84 38 04 00 00 41 0f b6 45 00 38 d8 7f 08 84 c0 0f 85 75 05 00 00 <0f> b6 45 00 84 c0 75 db be 02 00 00 00 48 89 ef e8 2a 95 4c 00 b8 RSP: 0018:ffff88803d54f5e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff1403138 RDX: 0000000000000001 RSI: ffffffff81678725 RDI: 0000000000000282 RBP: ffffffff8a0189c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000002d6a R13: fffffbfff1403138 R14: 0000000000000001 R15: ffff8880ba12bd80 FS: 00007f475fe09700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f480ccdfd58 CR3: 0000000099bc4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:679 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:53 [inline] queued_spin_lock include/asm-generic/qspinlock.h:88 [inline] do_raw_spin_lock+0x189/0x220 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:329 [inline] alloc_vmap_area+0x186/0x980 mm/vmalloc.c:432 __get_vm_area_node+0x17b/0x3a0 mm/vmalloc.c:1401 __vmalloc_node_range mm/vmalloc.c:1748 [inline] __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags mm/vmalloc.c:1818 [inline] vzalloc+0xe6/0x1a0 mm/vmalloc.c:1857 n_tty_open+0x16/0x160 drivers/tty/n_tty.c:1912 tty_ldisc_open+0x81/0xc0 drivers/tty/tty_ldisc.c:469 tty_ldisc_setup+0x43/0x100 drivers/tty/tty_ldisc.c:774 tty_init_dev.part.0+0x1b9/0x4a0 drivers/tty/tty_io.c:1360 tty_init_dev drivers/tty/tty_io.c:1329 [inline] tty_open_by_driver drivers/tty/tty_io.c:1981 [inline] tty_open+0x70a/0x990 drivers/tty/tty_io.c:2029 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4196c4 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f475fe08cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004196c4 RDX: 0000000000000002 RSI: 00007f475fe08d60 RDI: 00000000ffffff9c RBP: 00007f475fe08d60 R08: 0000000000000000 R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 00007ffc348c2bbf R14: 00007f475fe09300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 12500 Comm: syz-executor.1 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: e8 b1 c3 35 00 e9 ab fe ff ff 4c 89 ef e8 a4 c3 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 <65> 48 8b 04 25 80 df 01 00 65 8b 15 8c 80 9f 7e 81 e2 00 01 1f 00 RSP: 0018:ffff8880ba0071d0 EFLAGS: 00000006 RAX: ffff888040442580 RBX: ffff888043422980 RCX: ffffffff8176a20a RDX: 0000000000010100 RSI: ffffffff81765811 RDI: ffff888043422980 RBP: ffff8880ba007688 R08: 0000000000000001 R09: ffffed100868456b R10: ffff888043422b5f R11: ffffffff8c66301b R12: ffff888043422ad8 R13: ffffffff89fe8020 R14: ffff888043422980 R15: ffff8880ba007688 FS: 00007f4c00945700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f726000 CR3: 0000000097dac000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_exclude_event+0x11/0x190 kernel/events/core.c:8003 perf_swevent_hrtimer+0x1af/0x3e0 kernel/events/core.c:9235 __run_hrtimer kernel/time/hrtimer.c:1419 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1481 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1539 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:unwind_next_frame+0x1ab/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 0f 00 00 41 f6 85 88 00 00 00 03 0f 85 14 03 00 00 4d 8d 6e 35 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 <4c> 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 8e 07 00 00 4c 89 e1 41 RSP: 0018:ffff8880ba007730 EFLAGS: 00000a07 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11017400eef RCX: 0000000000000000 RDX: 1ffff11017400f12 RSI: ffff8880ba0076c0 RDI: 0000000000000001 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba0078bf R11: 0000000000074071 R12: ffff8880ba0078a8 R13: ffff8880ba007895 R14: ffff8880ba007860 R15: 0000000000000200 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node_trace+0x151/0x3b0 mm/slab.c:3668 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 skb_copy+0x139/0x2f0 net/core/skbuff.c:1358 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb8a/0x1330 drivers/net/wireless/mac80211_hwsim.c:1353 mac80211_hwsim_tx_frame+0x12b/0x210 drivers/net/wireless/mac80211_hwsim.c:1556 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:seq_puts+0x87/0x130 fs/seq_file.c:662 Code: 3c 11 00 49 8d 44 2d 00 0f 85 82 00 00 00 4c 8b 7b 08 48 89 c7 48 89 04 24 4c 89 fe e8 32 07 b7 ff 48 8b 04 24 4c 39 f8 73 5b 14 06 b7 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 RSP: 0018:ffff88803d4b7448 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13 RAX: 00000000000008cf RBX: ffff8880aa1fa900 RCX: ffffffff81ab584e RDX: 0000000000001000 RSI: ffff888040442580 RDI: 0000000000000006 RBP: 0000000000000008 R08: 0000000000000010 R09: 00000000000008cf R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff8872d980 R13: 00000000000008c7 R14: ffff8880aa1fa918 R15: 0000000000001000 s_show mm/vmalloc.c:2742 [inline] s_show+0x599/0x840 mm/vmalloc.c:2704 seq_read+0xbcd/0x1160 fs/seq_file.c:268 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 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:00007f4c00945188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 4000000000010046 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff1799b04f R14: 00007f4c00945300 R15: 0000000000022000