watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.3.1092:4209]
Modules linked in:
CPU: 1 PID: 4209 Comm: syz.3.1092 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x520/0x9b0 kernel/locking/qspinlock.c:508
Code: 8b 44 24 18 c6 00 00 48 8b 44 24 10 42 0f b6 04 28 84 c0 0f 85 1c 01 00 00 48 8d 43 01 c6 00 01 41 bc 00 80 ff ff eb 07 f3 90 <41> ff c4 74 47 43 0f b6 04 2e 84 c0 75 2b 80 3b 00 75 eb 48 89 df
RSP: 0018:ffffc900010876a0 EFLAGS: 00000206
RAX: 0000000000000004 RBX: ffffffff870fd640 RCX: 00000000870fd600
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffffff870fd640
RBP: ffffc90001087790 R08: 0000000000000000 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff0e1fac8 R12: 00000000ffffce94
R13: dffffc0000000000 R14: 1ffffffff0e1fac8 R15: ffff8881f7130001
FS:  00007f2317c0a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000115ac1000 CR4: 00000000003506a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:188 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0xe4/0xf0 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:364 [inline]
 preload_this_cpu_lock mm/vmalloc.c:1519 [inline]
 alloc_vmap_area+0x217/0x1a70 mm/vmalloc.c:1561
 __get_vm_area_node+0x14e/0x350 mm/vmalloc.c:2447
 __vmalloc_node_range+0xe8/0xad0 mm/vmalloc.c:3107
 __vmalloc_node mm/vmalloc.c:3212 [inline]
 __vmalloc+0x79/0x90 mm/vmalloc.c:3226
 bpf_prog_alloc_no_stats+0x3b/0x2c0 kernel/bpf/core.c:90
 bpf_prog_alloc+0x1f/0x1e0 kernel/bpf/core.c:124
 bpf_prog_load+0x80e/0x1620 kernel/bpf/syscall.c:2275
 __sys_bpf+0x51d/0x7d0 kernel/bpf/syscall.c:4633
 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4735 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:4735
 x64_sys_call+0x4b9/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f23191afe59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2317c0a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2319428fa0 RCX: 00007f23191afe59
RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f2319245e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2319429038 R14: 00007f2319428fa0 R15: 00007ffcaab0f8a8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4175 Comm: syz.2.1084 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:kasan_check_range+0x1c6/0x2a0 mm/kasan/generic.c:-1
Code: 89 dc 49 8d 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 0e 41 80 3b 00 75 6b 49 ff c3 49 ff cc 75 f2 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 45 84 ff 0f 85 91 00 00 00 41 f7 c7 00 ff 00 00
RSP: 0018:ffffc900000070b0 EFLAGS: 00000256
RAX: ffffc90000007101 RBX: ffffffff86711fc0 RCX: ffffffff815289ce
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8671f568
RBP: ffffc900000070c0 R08: ffffffff8671f56f R09: 1ffffffff0ce3ead
R10: dffffc0000000000 R11: fffffbfff0ce3eae R12: ffffffff8672ffc0
R13: ffffffff8672ffc8 R14: 1ffffffff0ce3ead R15: ffffffff8671f568
FS:  00007fee3c01b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff620637ff0 CR3: 00000001e4b15000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 atomic_long_read include/linux/atomic/atomic-instrumented.h:1183 [inline]
 prb_read kernel/printk/printk_ringbuffer.c:1808 [inline]
 _prb_read_valid+0x1ee/0x9a0 kernel/printk/printk_ringbuffer.c:1891
 prb_read_valid+0x3d/0x60 kernel/printk/printk_ringbuffer.c:1940
 console_unlock+0x2b7/0xf10 kernel/printk/printk.c:2713
 vprintk_emit+0x13f/0x320 kernel/printk/printk.c:2294
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2309
 vprintk+0x7a/0x80 kernel/printk/printk_safe.c:45
 _printk+0xda/0x130 kernel/printk/printk.c:2319
 br_fdb_update+0x561/0x5b0 net/bridge/br_fdb.c:596
 br_handle_frame_finish+0x26e/0x1130 net/bridge/br_input.c:106
 nf_hook_bridge_pre net/bridge/br_input.c:264 [inline]
 br_handle_frame+0x61a/0xfd0 net/bridge/br_input.c:384
 __netif_receive_skb_core+0xe6c/0x2fb0 net/core/dev.c:5453
 __netif_receive_skb_one_core net/core/dev.c:5557 [inline]
 __netif_receive_skb+0x72/0x280 net/core/dev.c:5673
 process_backlog+0x351/0x600 net/core/dev.c:6550
 __napi_poll+0xbb/0x580 net/core/dev.c:7109
 napi_poll net/core/dev.c:7176 [inline]
 net_rx_action+0x37f/0x910 net/core/dev.c:7266
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:224 [inline]
RIP: 0010:pvclock_clocksource_read+0xee/0x720 arch/x86/kernel/pvclock.c:76
Code: 00 00 00 00 fc ff df 48 89 55 a0 43 0f b6 04 23 84 c0 0f 85 40 01 00 00 42 0f b6 04 22 84 c0 0f 85 7b 01 00 00 8b 1f 0f 01 f9 <66> 90 49 89 d5 48 8b 8d 38 ff ff ff 42 0f b6 0c 21 84 c9 0f 85 a5
RSP: 0018:ffffc90001156e28 EFLAGS: 00000246
RAX: 0000000090c04bab RBX: 0000000000000008 RCX: 0000000000000000
RDX: 00000000000000a0 RSI: ffffffff870c401c RDI: ffffffff870c4000
RBP: ffffc90001156ef8 R08: ffffffff870c4008 R09: ffffffff870c4018
R10: ffffffff870c4003 R11: 1ffffffff0e18800 R12: dffffc0000000000
R13: 1ffffd4000960d0b R14: 000000000012c1a1 R15: ffffea0004b06840
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x18/0x40 arch/x86/kernel/kvmclock.c:91
 paravirt_sched_clock arch/x86/include/asm/paravirt.h:31 [inline]
 sched_clock+0x9/0x10 arch/x86/kernel/tsc.c:253
 sched_clock_cpu+0x18/0x3d0 kernel/sched/clock.c:371
 local_clock include/linux/sched/clock.h:84 [inline]
 __reset_page_owner+0x27/0x190 mm/page_owner.c:154
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1474 [inline]
 free_pcp_prepare mm/page_alloc.c:1546 [inline]
 free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536
 free_unref_page+0xae/0x540 mm/page_alloc.c:3618
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x6c/0x100 mm/page_alloc.c:5900
 free_pages+0x82/0x90 mm/page_alloc.c:5911
 kasan_depopulate_vmalloc_pte+0x6b/0x90 mm/kasan/shadow.c:354
 apply_to_pte_range mm/memory.c:2645 [inline]
 apply_to_pmd_range mm/memory.c:2689 [inline]
 apply_to_pud_range mm/memory.c:2725 [inline]
 apply_to_p4d_range mm/memory.c:2761 [inline]
 __apply_to_page_range+0x8ca/0xc70 mm/memory.c:2797
 apply_to_existing_page_range+0x38/0x50 mm/memory.c:2830
 kasan_release_vmalloc+0x97/0xb0 mm/kasan/shadow.c:464
 __purge_vmap_area_lazy+0xa8d/0x1890 mm/vmalloc.c:1723
 _vm_unmap_aliases+0x2f1/0x370 mm/vmalloc.c:2126
 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:2149
 change_page_attr_set_clr+0x317/0xc30 arch/x86/mm/pat/set_memory.c:1740
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:919 [inline]
 bpf_int_jit_compile+0xbf12/0xc4c0 arch/x86/net/bpf_jit_comp.c:2478
 bpf_prog_select_runtime+0x6ea/0x9e0 kernel/bpf/core.c:1947
 bpf_migrate_filter net/core/filter.c:1307 [inline]
 bpf_prepare_filter+0x100e/0x11b0 net/core/filter.c:1355
 __get_filter+0x2e2/0x410 net/core/filter.c:1524
 sk_attach_filter+0x23/0x140 net/core/filter.c:1539
 tun_attach_filter+0x11d/0x370 drivers/net/tun.c:2894
 __tun_chr_ioctl+0x1834/0x1f40 drivers/net/tun.c:3286
 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:3349
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0x121/0x1a0 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fee3d5c0e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fee3c01b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee3d839fa0 RCX: 00007fee3d5c0e59
RDX: 0000200000000140 RSI: 00000000401054d5 RDI: 0000000000000006
RBP: 00007fee3d656e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee3d83a038 R14: 00007fee3d839fa0 R15: 00007ffca5a71af8
 </TASK>