watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:26346] Modules linked in: irq event stamp: 3380187 hardirqs last enabled at (3380186): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3380187): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2609084): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2609087): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2609087): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 26346 Comm: syz-executor.3 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] RIP: 0010:unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 Code: 05 5b 31 c0 5d c3 48 8d 6b 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 75 32 48 8b 7b 48 e8 df 9f 15 00 <85> c0 74 d3 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 RSP: 0018:ffff8880ba007890 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff8880ba0078b8 RCX: 0000000000000000 RDX: 1ffff11017400f20 RSI: ffff8880ba007718 RDI: ffffffff8688fc42 RBP: ffff8880ba007900 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba007917 R11: 0000000000074071 R12: ffff8880ba007950 R13: 0000000000000000 R14: ffff8880b5b95c00 R15: 00000000000000e8 FS: 00007fbd04351700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020014000 CR3: 00000002323af000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 ieee802154 phy0 wpan0: encryption failed: -22 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 ieee802154 phy1 wpan1: encryption failed: -22 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 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:__schedule+0x9f/0x2040 kernel/sched/core.c:3437 Code: c0 e8 b5 14 5f fb 48 98 48 8d 3c c5 00 9f cf 89 48 89 fa 48 c1 ea 03 42 80 3c 32 00 0f 85 79 1c 00 00 4c 03 3c c5 00 9f cf 89 <49> 8d 87 20 0a 00 00 4c 89 bd 70 ff ff ff 48 89 c2 48 89 85 58 ff RSP: 0018:ffff8882292ef330 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9000ca02000 RDX: 1ffffffff139f3e0 RSI: ffffffff83771eb1 RDI: ffffffff89cf9f00 RBP: ffff8882292ef3f8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000074071 R12: dffffc0000000000 R13: 000000000002b0c0 R14: dffffc0000000000 R15: ffff8880ba02b0c0 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:3641 ___preempt_schedule+0x16/0x18 unwind_next_frame+0xf07/0x1400 arch/x86/kernel/unwind_orc.c:579 __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 alloc_skb include/linux/skbuff.h:995 [inline] sock_wmalloc+0xd0/0x120 net/core/sock.c:1942 ip_append_page+0x75e/0x1000 net/ipv4/ip_output.c:1275 udp_sendpage+0x1a9/0x5c0 net/ipv4/udp.c:1233 inet_sendpage+0x164/0x650 net/ipv4/af_inet.c:815 kernel_sendpage net/socket.c:3585 [inline] sock_sendpage+0xdf/0x140 net/socket.c:912 pipe_to_sendpage+0x268/0x330 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x389/0x800 fs/splice.c:627 splice_from_pipe fs/splice.c:662 [inline] generic_splice_sendpage+0xd4/0x140 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] do_splice fs/splice.c:1154 [inline] __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice+0xfe7/0x16d0 fs/splice.c:1408 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:00007fbd04351188 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 000000000002ffff R09: 0700000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffe880dcadf R14: 00007fbd04351300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 26320 Comm: syz-executor.4 Not tainted 4.19.206-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:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x1db/0x420 kernel/smp.c:302 Code: 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 e8 87 03 0a 00 f3 90 <44> 8b 64 24 58 31 ff 41 83 e4 01 44 89 e6 e8 e2 04 0a 00 45 85 e4 RSP: 0018:ffff88822901f580 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 1ffff11045203eb4 RCX: ffffc9000e50c000 RDX: 0000000000040000 RSI: ffffffff81588f39 RDI: 0000000000000005 RBP: ffff88822901f658 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff89f88728 FS: 00007f62d4866700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f830ea35000 CR3: 0000000237d38000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _rcu_barrier+0x248/0x3e0 kernel/rcu/tree.c:3479 netdev_run_todo+0x100/0xab0 net/core/dev.c:8972 rtnl_unlock net/core/rtnetlink.c:117 [inline] rtnetlink_rcv_msg+0x460/0xb80 net/core/rtnetlink.c:4783 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911 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: 0033:0x4665f9 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:00007f62d4866188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffed27dafaf R14: 00007f62d4866300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 05 5b 31 c0 5d add $0x5dc0315b,%eax 5: c3 retq 6: 48 8d 6b 48 lea 0x48(%rbx),%rbp a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 11: fc ff df 14: 48 89 ea mov %rbp,%rdx 17: 48 c1 ea 03 shr $0x3,%rdx 1b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1f: 75 32 jne 0x53 21: 48 8b 7b 48 mov 0x48(%rbx),%rdi 25: e8 df 9f 15 00 callq 0x15a009 * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 d3 je 0x1 2e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 35: fc ff df 38: 48 89 ea mov %rbp,%rdx 3b: 48 c1 ea 03 shr $0x3,%rdx 3f: 80 .byte 0x80