====================================== | [ 11.740882][ T267] #0: ffffffffa9a01dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) | [ 11.741180][ T267] #1: ffffffffa99f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 11.741503][ T267] | [ 11.741503][ T267] stack backtrace: [ 11.741970][ T267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.742169][ T267] Call Trace: [ 11.742292][ T267] [ 11.742377][ T267] dump_stack_lvl (lib/dump_stack.c:123) [ 11.742545][ T267] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 11.742709][ T267] validate_chain (kernel/locking/lockdep.c:3894) [ 11.742872][ T267] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 11.743038][ T267] ? 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) [ 11.743199][ T267] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 11.743323][ T267] __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.743488][ T267] ? __free_zapped_classes (./include/linux/bitmap.h:494 kernel/locking/lockdep.c:6331) [ 11.743666][ T267] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 11.743828][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.744034][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.744198][ T267] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 11.744364][ T267] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 11.744526][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.744726][ T267] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 11.744853][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.745056][ T267] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 11.745220][ T267] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.745382][ T267] netdev_change_features (net/core/dev.c:10328) [ 11.745551][ T267] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 11.745758][ T267] ? ethnl_default_notify (net/ethtool/netlink.c:733) [ 11.745923][ T267] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.746086][ T267] ? ethtool_rx_flow_rule_create (net/ethtool/ioctl.c:3683) [ 11.746294][ T267] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.746496][ T267] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4108) [ 11.746663][ T267] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 11.746823][ T267] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 11.746990][ T267] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 11.747153][ T267] netdev_change_features (net/core/dev.c:10328) [ 11.747314][ T267] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 11.747516][ T267] ? sysfs_create_file_ns (fs/sysfs/file.c:372) [ 11.747685][ T267] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.747847][ T267] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 11.748049][ T267] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.748252][ T267] ? sysfs_create_files (./include/linux/sysfs.h:788 (discriminator 4) fs/sysfs/file.c:390 (discriminator 4)) [ 11.748415][ T267] bond_enslave (drivers/net/bonding/bond_main.c:2355) [ 11.748585][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.748748][ T267] ? __pfx_bond_enslave (drivers/net/bonding/bond_main.c:1956) [ 11.748913][ T267] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:774) [ 11.749078][ T267] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 11.749242][ T267] ? __kernel_text_address (kernel/extable.c:79) [ 11.749405][ T267] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 11.749569][ T267] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 11.749774][ T267] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 11.749938][ T267] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2646) [ 11.750102][ T267] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.h:47 kernel/locking/mutex.c:66) [ 11.750276][ T267] ? rtnl_is_locked (net/core/rtnetlink.c:163) [ 11.750434][ T267] ? netdev_master_upper_dev_get (net/core/dev.c:7230) [ 11.750636][ T267] do_setlink.constprop.0 (net/core/rtnetlink.c:3125) [ 11.750799][ T267] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:2999) [ 11.751000][ T267] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 11.751163][ T267] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 11.751328][ T267] ? rtnl_newlink (./include/linux/slab.h:901 net/core/rtnetlink.c:3921) [ 11.751493][ T267] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 11.751659][ T267] ? __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) [ 11.751822][ T267] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79) [ 11.752026][ T267] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 11.752188][ T267] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 37)) [ 11.752352][ T267] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735) [ 11.752522][ T267] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 11.752685][ T267] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 11.752851][ T267] ? __pfx___mutex_lock (kernel/locking/mutex.c:734) [ 11.753013][ T267] ? __rtnl_newlink (net/core/rtnetlink.c:3871) [ 11.753176][ T267] rtnl_newlink (net/core/rtnetlink.c:345 net/core/rtnetlink.c:4022) [ 11.753343][ T267] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 11.753506][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.753676][ T267] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 11.753890][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.754070][ T267] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6909) [ 11.754238][ T267] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 11.754399][ T267] rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 11.754565][ T267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 11.754727][ T267] ? 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) [ 11.754891][ T267] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 11.755016][ T267] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.755179][ T267] netlink_rcv_skb (net/netlink/af_netlink.c:2543) [ 11.755348][ T267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 11.755513][ T267] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520) [ 11.755684][ T267] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 11.755845][ T267] ? 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) [ 11.756009][ T267] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348) [ 11.756174][ T267] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333) [ 11.756491][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.756660][ T267] netlink_sendmsg (net/netlink/af_netlink.c:1892) [ 11.756823][ T267] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811) [ 11.756989][ T267] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594) [ 11.757153][ T267] ? __pfx_____sys_sendmsg (net/socket.c:2540) [ 11.757315][ T267] ? __pfx_copy_msghdr_from_user (net/socket.c:2520) [ 11.757516][ T267] ___sys_sendmsg (net/socket.c:2650) [ 11.757678][ T267] ? __pfx____sys_sendmsg (net/socket.c:2637) [ 11.757844][ T267] ? kasan_save_stack (mm/kasan/common.c:49) [ 11.758006][ T267] ? kasan_save_stack (mm/kasan/common.c:48) [ 11.758166][ T267] ? __kasan_record_aux_stack (mm/kasan/generic.c:544) [ 11.758328][ T267] ? __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) [ 11.758532][ T267] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539) [ 11.758695][ T267] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 11.758855][ T267] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 11.759059][ T267] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.759222][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.759385][ T267] ? __lock_release (kernel/locking/lockdep.c:5525) [ 11.759551][ T267] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2058 arch/x86/mm/physaddr.c:65) [ 11.759713][ T267] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 11.759872][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.760034][ T267] __sys_sendmsg (net/socket.c:2680) [ 11.760210][ T267] ? __pfx___sys_sendmsg (net/socket.c:2665) [ 11.760371][ T267] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643) [ 11.760578][ T267] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 11.760738][ T267] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 11.760939][ T267] RIP: 0033:0x7f17687339a7 [ 11.761112][ T267] 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) [ 11.761676][ T267] RSP: 002b:00007ffd351df588 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.761917][ T267] RAX: ffffffffffffffda RBX: 00007ffd351dfcb0 RCX: 00007f17687339a7 [ 11.762158][ T267] RDX: 0000000000000000 RSI: 00007ffd351df5f0 RDI: 0000000000000005 [ 11.762404][ T267] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 11.762642][ T267] R10: 0000000037c00910 R11: 0000000000000246 R12: 0000000000000004 Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain