watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:6100] Modules linked in: irq event stamp: 3617629 hardirqs last enabled at (3617628): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3617628): [] _raw_spin_unlock_irq+0x24/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (3617629): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (44): [] netlink_create+0x3c2/0x5e0 net/netlink/af_netlink.c:709 softirqs last disabled at (249): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (249): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 6100 Comm: syz-executor.0 Not tainted 4.19.205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d e9 1f a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff8880ba007cd0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3059 RBX: ffff88804189c180 RCX: 0000000000007824 RDX: dffffc0000000000 RSI: 00000000de67045d RDI: 0000000000000286 RBP: ffff8880ba007d58 R08: ffffffff8cd52660 R09: 0000000000000000 R10: ffff88804189ca08 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f170bc2f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010038 CR3: 0000000035a60000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x113/0x700 kernel/time/timer.c:1335 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __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:536 [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:orc_find arch/x86/kernel/unwind_orc.c:152 [inline] RIP: 0010:unwind_next_frame+0x2eb/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 24 30 89 4c 24 28 44 89 5c 24 20 e8 ff d2 6e 00 48 8b 54 24 38 48 8b 74 24 30 8b 4c 24 28 44 8b 5c 24 20 8b 14 95 98 8c 17 8c <89> c8 48 8d 3c 40 4c 8d 8c 3f 4c ca 8c 8b 83 c2 01 49 81 f9 98 8c RSP: 0018:ffff88821589f948 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000003 RBX: 1ffff11042b13f32 RCX: 00000000000001ce RDX: 00000000000001ce RSI: 0000000000000077 RDI: ffffffff8c178e78 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8bf53842 R10: ffff88821589fad7 R11: 0000000000074071 R12: ffff88821589fac0 R13: ffff88821589faad R14: ffff88821589fa78 R15: ffffffff81007718 __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+0x122/0x370 mm/slab.c:3559 sock_alloc_inode+0x19/0x250 net/socket.c:244 alloc_inode+0x5d/0x180 fs/inode.c:211 new_inode_pseudo+0x14/0xe0 fs/inode.c:911 sock_alloc+0x3c/0x260 net/socket.c:567 __sock_create+0xba/0x740 net/socket.c:1327 sock_create net/socket.c:1414 [inline] __sys_socket+0xef/0x200 net/socket.c:1456 __do_sys_socket net/socket.c:1465 [inline] __se_sys_socket net/socket.c:1463 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1463 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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:00007f170bc2f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 000000000056c318 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000000000803 RDI: 0000000000000010 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c318 R13: 00007ffcd3556d7f R14: 00007f170bc2f300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6095 Comm: syz-executor.0 Not tainted 4.19.205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:656 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:661 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x1d4/0x420 kernel/smp.c:302 Code: 85 f6 0f 84 b8 00 00 00 e8 a9 03 0a 00 48 8b 4c 24 08 48 8b 54 24 10 48 8d 74 24 40 8b 7c 24 1c e8 a1 f9 ff ff 41 89 c5 eb 07 87 03 0a 00 f3 90 44 8b 64 24 58 31 ff 41 83 e4 01 44 89 e6 e8 RSP: 0018:ffff8881f5e77580 EFLAGS: 00000202 RAX: 0000000000000002 RBX: 1ffff1103ebceeb4 RCX: ffffffff81588f4e RDX: 0000000000000001 RSI: ffff888032882180 RDI: 0000000000000005 RBP: ffff8881f5e77660 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000002 FS: 00007f170bc71700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020011038 CR3: 0000000035a60000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many+0x743/0x8d0 kernel/smp.c:434 flush_tlb_others arch/x86/include/asm/paravirt.h:309 [inline] flush_tlb_mm_range+0x179/0x320 arch/x86/mm/tlb.c:728 flush_tlb_page arch/x86/include/asm/tlbflush.h:576 [inline] ptep_clear_flush+0x123/0x160 mm/pgtable-generic.c:87 wp_page_copy+0xaf2/0x2c40 mm/memory.c:2654 do_wp_page+0x2d4/0x2210 mm/memory.c:2903 handle_pte_fault mm/memory.c:4191 [inline] __handle_mm_fault+0x258b/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:__put_user_4+0x1c/0x30 arch/x86/lib/putuser.S:70 Code: 1f 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 1c 25 c0 df 01 00 48 8b 9b 98 14 00 00 48 83 eb 03 48 39 d9 73 3c 0f 1f 00 <89> 01 31 c0 0f 1f 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 65 48 RSP: 0018:ffff8881f5e77cd0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00007fffffffeffd RCX: 0000000020011038 RDX: 0000000000040000 RSI: ffffffff866e1a82 RDI: 0000000000000286 RBP: 00000000000401f4 R08: ffffffff8cd40898 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000241 R13: 0000000020011000 R14: 0000000000000400 R15: 00000000000003ff __sys_sendmmsg+0x1d3/0x470 net/socket.c:2325 __do_sys_sendmmsg net/socket.c:2349 [inline] __se_sys_sendmmsg net/socket.c:2346 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2346 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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:00007f170bc71188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665f9 RDX: 000000000800001d RSI: 0000000020007fc0 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 08000000000001f4 R11: 0000000000000246 R12: 000000000056c1a8 R13: 00007ffcd3556d7f R14: 00007f170bc71300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 00 48 c1 add %cl,-0x3f(%rax) 9: e8 03 80 3c 10 callq 0x103c8011 e: 00 0f add %cl,(%rdi) 10: 85 b7 01 00 00 48 test %esi,0x48000001(%rdi) 16: 83 3d e9 1f a6 08 00 cmpl $0x0,0x8a61fe9(%rip) # 0x8a62006 1d: 0f 84 2a 01 00 00 je 0x14d 23: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi 28: 57 push %rdi 29: 9d popfq * 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2f: 48 83 c4 18 add $0x18,%rsp 33: 5b pop %rbx 34: 5d pop %rbp 35: 41 5c pop %r12 37: 41 5d pop %r13 39: 41 5e pop %r14 3b: 41 5f pop %r15 3d: c3 retq 3e: 65 gs 3f: 8b .byte 0x8b