nbd: must specify at least one socket bridge2530: port 1(vlan1077) entered disabled state watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:7813] Modules linked in: irq event stamp: 4332527 hardirqs last enabled at (4332526): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (4332527): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (268): [] netlink_create+0x3c2/0x5e0 net/netlink/af_netlink.c:712 softirqs last disabled at (949): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (949): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 7813 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__save_stack_trace+0xa2/0x190 arch/x86/kernel/stacktrace.c:43 Code: 2d eb 62 41 8b 04 24 41 3b 44 24 04 73 76 49 8b 54 24 08 8d 48 01 41 89 0c 24 48 89 1c c2 48 8d 7d 80 e8 e1 90 06 00 8b 45 80 <85> c0 74 37 48 8d 7d 80 e8 71 8c 06 00 48 85 c0 48 89 c3 74 26 45 RSP: 0018:ffff8880ba107890 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffffff81007719 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff8880ba107700 RDI: 0000000000000001 RBP: ffff8880ba107920 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba1078ff R11: 0000000000074071 R12: ffff8880ba107938 R13: 0000000000000000 R14: ffff88813bff0940 R15: 00000000000001c0 FS: 00007f458d69d700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f458d69bec0 CR3: 0000000038b17000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:403 ndisc_send_rs+0x33a/0x690 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 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:quarantine_reduce+0x0/0x230 mm/kasan/quarantine.c:213 Code: 46 08 8d 0b 48 89 05 3f 08 8d 0b 48 63 05 40 08 8d 0b 48 89 c2 48 8d 04 40 48 8b 1c c5 70 7e 25 8d e9 6e ff ff ff 0f 1f 40 00 <55> 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 48 RSP: 0018:ffff88822959faf8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: 00000000ea6001eb RBX: 00000000006000c0 RCX: 0000000000200000 RDX: 0000000000000080 RSI: ffff88803f7d4840 RDI: ffff88813bff0640 RBP: ffff88803f7d4840 R08: 00000000006000c0 R09: 0000000000000002 R10: 00000000969c692a R11: 0000000058aeadd6 R12: 00000000006000c0 R13: ffff88813bff0640 R14: ffff88813bff0640 R15: 0000000000000080 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538 kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] sock_alloc_inode+0x5f/0x250 net/socket.c:247 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:1329 sock_create net/socket.c:1416 [inline] __sys_socket+0xef/0x200 net/socket.c:1458 __do_sys_socket net/socket.c:1467 [inline] __se_sys_socket net/socket.c:1465 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1465 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f458ed29517 Code: f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 29 00 00 00 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:00007f458d69c0d8 EFLAGS: 00000286 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f458ee3af60 RCX: 00007f458ed29517 RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f458ed81ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 00000000ffffffff R13: 00007ffd479e33bf R14: 00007f458d69d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7811 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_release kernel/locking/lockdep.c:3662 [inline] RIP: 0010:lock_release+0x1b6/0x8b0 kernel/locking/lockdep.c:3927 Code: 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 65 4c 8b 34 25 c0 df 01 00 38 d0 7c 08 84 d2 0f 85 1b 06 00 00 44 8b 0d ba a5 fa 08 <45> 85 c9 0f 84 f3 01 00 00 49 8d 86 80 08 00 00 48 89 c2 48 89 44 RSP: 0018:ffff8880ba0073a8 EFLAGS: 00000097 RAX: 0000000000000003 RBX: ffff88803f4cc2c0 RCX: 1ffffffff148be2c RDX: 0000000000000004 RSI: 0000000000000002 RDI: ffff88803f4ccb44 RBP: ffff8880ba024cd8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff8c66501b R12: 1ffff11017400e78 R13: ffffffff81542f37 R14: ffff88803f4cc2c0 R15: dffffc0000000000 FS: 00007f726bf0e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001f40 CR3: 000000009b224000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_unlock_irqrestore+0x1b/0xe0 kernel/locking/spinlock.c:184 __run_hrtimer kernel/time/hrtimer.c:1463 [inline] __hrtimer_run_queues+0x397/0xe60 kernel/time/hrtimer.c:1527 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585 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:__orc_find+0xa8/0xf0 arch/x86/kernel/unwind_orc.c:56 Code: 75 48 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 fe 02 4b 8d 04 76 48 8d 04 46 48 83 c4 10 5b <5d> 41 5c 41 5d 41 5e 41 5f c3 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d RSP: 0018:ffff8880ba007720 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8b99ceaa RBX: 1ffff11017400ef3 RCX: ffffffff81980912 RDX: 0000000000000000 RSI: ffffffff8b99ceaa RDI: ffffffff8b38f6d0 RBP: ffffffff8b38f6d4 R08: 0000000000000000 R09: ffffffff8b99ceaa R10: ffff8880ba0078df R11: 0000000000074071 R12: ffffffff8b38f6d0 R13: ffffffff8b38f6d0 R14: 0000000000000000 R15: dffffc0000000000 orc_find arch/x86/kernel/unwind_orc.c:159 [inline] unwind_next_frame+0x339/0x1400 arch/x86/kernel/unwind_orc.c:422 __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 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node+0x133/0x3b0 mm/slab.c:3647 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:403 ndisc_send_rs+0x33a/0x690 net/ipv6/ndisc.c:669 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d 9c a2 a3 08 00 74 37 e8 7d a5 14 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 69 a5 14 00 0f 0b e8 62 a5 14 00 RSP: 0018:ffff888225ef7490 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000b43c000 RDX: 000000000002ac44 RSI: ffffffff814ddff3 RDI: 0000000000000216 RBP: ffff888225ef74d0 R08: ffffffff8cd37250 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000025 R13: 1ffffffff13e3051 R14: 0000000000000200 R15: 0000000000000001 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 nbd_genl_connect.cold+0xbd/0x14b drivers/block/nbd.c:1760 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f726d598e99 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:00007f726bf0e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f726d6abf60 RCX: 00007f726d598e99 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 000000000000000f RBP: 00007f726d5f2ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7e81479f R14: 00007f726bf0e300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 2d eb 62 41 8b sub $0x8b4162eb,%eax 5: 04 24 add $0x24,%al 7: 41 3b 44 24 04 cmp 0x4(%r12),%eax c: 73 76 jae 0x84 e: 49 8b 54 24 08 mov 0x8(%r12),%rdx 13: 8d 48 01 lea 0x1(%rax),%ecx 16: 41 89 0c 24 mov %ecx,(%r12) 1a: 48 89 1c c2 mov %rbx,(%rdx,%rax,8) 1e: 48 8d 7d 80 lea -0x80(%rbp),%rdi 22: e8 e1 90 06 00 callq 0x69108 27: 8b 45 80 mov -0x80(%rbp),%eax * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 37 je 0x65 2e: 48 8d 7d 80 lea -0x80(%rbp),%rdi 32: e8 71 8c 06 00 callq 0x68ca8 37: 48 85 c0 test %rax,%rax 3a: 48 89 c3 mov %rax,%rbx 3d: 74 26 je 0x65 3f: 45 rex.RB