====================================== | [ 10.937379][ T263] #0: ffffffffb1c07e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) | [ 10.937635][ T263] #1: ffffffffb1bf6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 10.937917][ T263] | [ 10.937917][ T263] stack backtrace: [ 10.938309][ T263] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.938488][ T263] Call Trace: [ 10.938596][ T263] [ 10.938670][ T263] dump_stack_lvl (lib/dump_stack.c:123) [ 10.938818][ T263] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 10.938970][ T263] validate_chain (kernel/locking/lockdep.c:3894) [ 10.939113][ T263] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.939254][ T263] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 10.939395][ T263] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.939506][ T263] __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.939649][ T263] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 10.939792][ T263] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.939986][ T263] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.940145][ T263] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 10.940294][ T263] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 10.940442][ T263] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.940626][ T263] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 10.940741][ T263] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.940922][ T263] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 10.941073][ T263] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.941236][ T263] netdev_update_features (net/core/dev.c:10314) [ 10.941380][ T263] ? __pfx_netdev_update_features (net/core/dev.c:10311) [ 10.941558][ T263] vlan_device_event (net/8021q/vlan.c:430 (discriminator 2)) [ 10.941706][ T263] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) [ 10.941850][ T263] ? __pfx_br_device_event (net/bridge/br.c:29) [ 10.941997][ T263] ? packet_notifier (net/packet/af_packet.c:4282) [ 10.942144][ T263] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 10.942289][ T263] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 10.942434][ T263] netdev_change_features (net/core/dev.c:10328) [ 10.942576][ T263] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 10.942752][ T263] ? __pfx___up_read (kernel/locking/rwsem.c:1337) [ 10.942896][ T263] bond_compute_features (drivers/net/bonding/bond_main.c:1548) bonding [ 10.943100][ T263] ? blocking_notifier_call_chain (kernel/notifier.c:384) [ 10.943278][ T263] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) bonding [ 10.943470][ T263] ? call_netdevice_notifiers (net/core/dev.c:2062) [ 10.943613][ T263] ? __pfx_call_netdevice_notifiers (net/core/dev.c:2062) [ 10.943786][ T263] __bond_release_one (drivers/net/bonding/bond_main.c:2607) bonding [ 10.943980][ T263] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.944125][ T263] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2492) bonding [ 10.944325][ T263] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:774) [ 10.944470][ T263] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.944614][ T263] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 10.944756][ T263] ? __kernel_text_address (kernel/extable.c:79) [ 10.944896][ T263] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 10.945088][ T263] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 10.945281][ T263] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.945435][ T263] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2646) [ 10.945588][ T263] do_set_master (net/core/rtnetlink.c:2912) [ 10.945741][ T263] do_setlink.constprop.0 (net/core/rtnetlink.c:3125) [ 10.945894][ T263] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:2999) [ 10.946083][ T263] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 10.946241][ T263] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 10.946385][ T263] ? rtnl_newlink (./include/linux/slab.h:901 net/core/rtnetlink.c:3921) [ 10.946526][ T263] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 10.946665][ T263] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:104) [ 10.946806][ T263] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79) [ 10.946980][ T263] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 10.947122][ T263] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 37)) [ 10.947265][ T263] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735) [ 10.947412][ T263] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 10.947551][ T263] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 10.947695][ T263] ? __pfx___mutex_lock (kernel/locking/mutex.c:734) [ 10.947837][ T263] ? __rtnl_newlink (net/core/rtnetlink.c:3871) [ 10.947978][ T263] rtnl_newlink (net/core/rtnetlink.c:345 net/core/rtnetlink.c:4022) [ 10.948121][ T263] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 10.948262][ T263] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.948403][ T263] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.948548][ T263] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.948693][ T263] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6909) [ 10.948834][ T263] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 10.948975][ T263] rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 10.949115][ T263] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 10.949256][ T263] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 10.949395][ T263] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.949506][ T263] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.949648][ T263] netlink_rcv_skb (net/netlink/af_netlink.c:2543) [ 10.949795][ T263] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 10.949937][ T263] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520) [ 10.950084][ T263] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 10.950225][ T263] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 10.950383][ T263] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348) [ 10.950554][ T263] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333) [ 10.950706][ T263] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.950857][ T263] netlink_sendmsg (net/netlink/af_netlink.c:1892) [ 10.951010][ T263] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811) [ 10.951166][ T263] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594) [ 10.951321][ T263] ? __pfx_____sys_sendmsg (net/socket.c:2540) [ 10.951472][ T263] ? __pfx_copy_msghdr_from_user (net/socket.c:2520) [ 10.951677][ T263] ___sys_sendmsg (net/socket.c:2650) [ 10.951831][ T263] ? __pfx____sys_sendmsg (net/socket.c:2637) [ 10.951972][ T263] ? kasan_save_stack (mm/kasan/common.c:49) [ 10.952125][ T263] ? kasan_save_stack (mm/kasan/common.c:48) [ 10.952269][ T263] ? __kasan_record_aux_stack (mm/kasan/generic.c:544) [ 10.952414][ T263] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) [ 10.952615][ T263] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539) [ 10.952770][ T263] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 10.952921][ T263] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 10.953106][ T263] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.953258][ T263] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.953409][ T263] ? __lock_release (kernel/locking/lockdep.c:5525) [ 10.953558][ T263] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2058 arch/x86/mm/physaddr.c:65) [ 10.953711][ T263] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.953867][ T263] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.954015][ T263] __sys_sendmsg (net/socket.c:2680) [ 10.954156][ T263] ? __pfx___sys_sendmsg (net/socket.c:2665) [ 10.954300][ T263] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643) [ 10.954488][ T263] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 10.954630][ T263] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 10.954806][ T263] RIP: 0033:0x7f0de57789a7 [ 10.954962][ T263] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0a 00 or (%rax),%al 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 10.955520][ T263] RSP: 002b:00007ffe073f6808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.955751][ T263] RAX: ffffffffffffffda RBX: 00007ffe073f6f30 RCX: 00007f0de57789a7 [ 10.955983][ T263] RDX: 0000000000000000 RSI: 00007ffe073f6870 RDI: 0000000000000005 [ 10.956218][ T263] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.956431][ T263] R10: 00007f0de5636ef8 R11: 0000000000000246 R12: 0000000000000002 Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain