IPVS: ftp: loaded support on port[0] = 21 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:31303] Modules linked in: irq event stamp: 3063175 hardirqs last enabled at (3063174): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3063175): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (137984): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (137987): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (137987): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 31303 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:46 [inline] RIP: 0010:unwind_next_frame+0xec5/0x1400 arch/x86/kernel/unwind_orc.c:572 Code: 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ea 02 00 00 49 39 ec 49 8b 46 10 77 24 48 39 e8 76 1f <48> 8d 55 08 48 39 d0 0f 93 c1 49 39 d4 0f 92 c0 84 c1 74 0b 48 3b RSP: 0018:ffff8880ba107788 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: ffff8880927e0000 RBX: 1ffff11017420efa RCX: 0000000000000000 RDX: 1ffff11017420f19 RSI: ffff8880ba107718 RDI: ffff8880ba1078c8 RBP: ffff8880927dfe08 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba107917 R11: 0000000000074071 R12: ffff8880927d8000 R13: ffff8880ba1078ed R14: ffff8880ba1078b8 R15: ffffffff8b91e9be FS: 00007f5eeb27c700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe1e70dcf7 CR3: 00000000a5852000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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+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:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3744 Code: 00 00 e8 3d 04 29 f9 e8 58 3f 4f f9 4c 89 e8 48 c1 e8 03 80 3c 18 00 75 69 48 83 3d 9b 18 d9 01 00 74 5b fb 66 0f 1f 44 00 00 01 00 00 00 e8 40 d1 ff ff 48 c7 c0 90 82 f1 89 48 c1 e8 03 80 RSP: 0018:ffff8880927df6b0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3053 RBX: dffffc0000000000 RCX: 1ffff110086891bd RDX: 0000000000000000 RSI: ffff888043448df0 RDI: ffff888043448dc4 RBP: ffffed10086890a8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888043448540 R13: ffffffff89f18298 R14: 0000000000000000 R15: 0000000000000000 retint_kernel+0x1b/0x2d RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data+0x6/0x70 kernel/kcov.c:121 Code: 00 00 8b 80 64 13 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa <65> 48 8b 34 25 c0 df 01 00 65 8b 05 7a 59 9f 7e a9 00 01 1f 00 75 RSP: 0018:ffff8880927df788 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffffff816d111f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f5eedd06ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000074071 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88813bff0040 R15: 00000000000000c0 bpf_jit_kallsyms_enabled include/linux/filter.h:949 [inline] bpf_prog_kallsyms_find kernel/bpf/core.c:509 [inline] is_bpf_text_address+0x7f/0x1b0 kernel/bpf/core.c:547 kernel_text_address kernel/extable.c:152 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:122 __kernel_text_address+0x9/0x30 kernel/extable.c:107 unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 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_trace+0x13c/0x3b0 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node+0x38/0x70 mm/slab.c:3696 kmalloc_node include/linux/slab.h:557 [inline] kvmalloc_node+0x61/0xf0 mm/util.c:423 kvmalloc include/linux/mm.h:577 [inline] kvzalloc include/linux/mm.h:585 [inline] bucket_table_alloc+0x3a/0x440 lib/rhashtable.c:176 rhashtable_init+0x3bc/0x810 lib/rhashtable.c:1069 rhltable_init+0x1c/0x60 lib/rhashtable.c:1098 mr_table_alloc+0x112/0x2e0 net/ipv4/ipmr_base.c:48 ipmr_new_table net/ipv4/ipmr.c:412 [inline] ipmr_new_table net/ipv4/ipmr.c:400 [inline] ipmr_rules_init net/ipv4/ipmr.c:254 [inline] ipmr_net_init net/ipv4/ipmr.c:2966 [inline] ipmr_net_init+0x30b/0x4e0 net/ipv4/ipmr.c:2958 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2c2/0x720 net/core/net_namespace.c:316 copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:206 ksys_unshare+0x36c/0x9a0 kernel/fork.c:2542 __do_sys_unshare kernel/fork.c:2610 [inline] __se_sys_unshare kernel/fork.c:2608 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:2608 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5eedd06ae9 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:00007f5eeb27c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f5eede19f60 RCX: 00007f5eedd06ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00007f5eedd60f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffacbcb58f R14: 00007f5eeb27c300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 31307 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_lockdep_rcu_enabled kernel/rcu/update.c:253 [inline] RIP: 0010:debug_lockdep_rcu_enabled+0xac/0xe0 kernel/rcu/update.c:251 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 32 8b 93 84 08 00 00 31 c0 5b <85> d2 0f 94 c0 c3 31 c0 5b c3 48 c7 c7 44 e0 26 8b e8 1e c3 47 00 RSP: 0018:ffff8880ba007a40 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88804d66c680 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffff88804d66cf04 RBP: ffff8880ba024cd8 R08: 0000000000000000 R09: 7fffffffffffffff R10: 0000000000000000 R11: ffffffff8c66501b R12: 1ffff11017400f4c R13: ffffffff81544790 R14: ffff8880ba024cc0 R15: ffff8880ba024d30 FS: 00007f5eeb27c700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f12e24e6210 CR3: 00000000a5852000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x5c3/0x8b0 kernel/locking/lockdep.c:3926 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_unlock_irqrestore+0x1b/0xe0 kernel/locking/spinlock.c:184 hrtimer_interrupt+0x400/0x9e0 kernel/time/hrtimer.c:1595 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:debug_lockdep_rcu_enabled+0x8/0xe0 kernel/rcu/update.c:253 Code: 47 00 e9 fa fd ff ff 48 89 ef e8 83 c4 47 00 e9 62 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 c7 c0 44 e0 26 8b 53 <48> ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 RSP: 0018:ffff8880ba007cb8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8b26e044 RBX: ffff8880160bc870 RCX: ffffffff8796e045 RDX: 0000000000000100 RSI: ffffffff8796e9e2 RDI: ffff8880160bc890 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b27f1880 R13: ffff8880b27f1880 R14: ffffed10164fe44d R15: ffff8880b27f2268 rcu_read_unlock include/linux/rcupdate.h:677 [inline] sta_info_get_bss+0x177/0x340 net/mac80211/sta_info.c:203 __ieee80211_rx_handle_packet net/mac80211/rx.c:4542 [inline] ieee80211_rx_napi+0x106d/0x2470 net/mac80211/rx.c:4672 ieee80211_rx include/net/mac80211.h:4109 [inline] ieee80211_tasklet_handler+0x101/0x160 net/mac80211/main.c:229 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: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:__tlb_remove_page_size+0x2/0x470 mm/memory.c:305 Code: df e8 b2 32 0d 00 e9 81 fc ff ff e8 a8 32 0d 00 e9 bd fd ff ff e8 9e 32 0d 00 e9 5e fd ff ff 66 0f 1f 84 00 00 00 00 00 41 57 <41> 56 49 89 f6 41 55 41 54 55 89 d5 53 48 89 fb e8 b9 52 d7 ff 48 RSP: 0018:ffff888049fc7818 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88804d66c680 RBX: 0000000000000000 RCX: ffffffff818ba0c8 RDX: 0000000000001000 RSI: ffffea00004e9b00 RDI: ffff888049fc7a80 RBP: ffffea00004e9b30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffea00024c4bc8 R13: ffffea00004e9b00 R14: dffffc0000000000 R15: 0000000020001000 __tlb_remove_page include/asm-generic/tlb.h:161 [inline] zap_pte_range mm/memory.c:1353 [inline] zap_pmd_range mm/memory.c:1463 [inline] zap_pud_range mm/memory.c:1492 [inline] zap_p4d_range mm/memory.c:1513 [inline] unmap_page_range+0x14e7/0x2c50 mm/memory.c:1534 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 unmap_region+0x241/0x3a0 mm/mmap.c:2571 do_munmap+0x603/0xde0 mm/mmap.c:2781 mmap_region+0x2a3/0x16b0 mm/mmap.c:1700 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 ksys_mmap_pgoff+0x45f/0x5a0 mm/mmap.c:1580 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5eedd06ae9 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:00007f5eeb27c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f5eede19f60 RCX: 00007f5eedd06ae9 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f5eedd60f25 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffacbcb58f R14: 00007f5eeb27c300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 7: fc ff df a: 48 89 fa mov %rdi,%rdx d: 48 c1 ea 03 shr $0x3,%rdx 11: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 15: 0f 85 ea 02 00 00 jne 0x305 1b: 49 39 ec cmp %rbp,%r12 1e: 49 8b 46 10 mov 0x10(%r14),%rax 22: 77 24 ja 0x48 24: 48 39 e8 cmp %rbp,%rax 27: 76 1f jbe 0x48 * 29: 48 8d 55 08 lea 0x8(%rbp),%rdx <-- trapping instruction 2d: 48 39 d0 cmp %rdx,%rax 30: 0f 93 c1 setae %cl 33: 49 39 d4 cmp %rdx,%r12 36: 0f 92 c0 setb %al 39: 84 c1 test %al,%cl 3b: 74 0b je 0x48 3d: 48 rex.W 3e: 3b .byte 0x3b