====================================== | [ 10.507238][ T267] #0: ffffffff90201dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) | [ 10.507539][ T267] #1: ffffffff901f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 10.507878][ T267] | [ 10.507878][ T267] stack backtrace: [ 10.508324][ T267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.508531][ T267] Call Trace: [ 10.508656][ T267] [ 10.508742][ T267] dump_stack_lvl (lib/dump_stack.c:123) [ 10.508909][ T267] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 10.509075][ T267] validate_chain (kernel/locking/lockdep.c:3894) [ 10.509240][ T267] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.509411][ 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) [ 10.509574][ T267] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.509701][ T267] __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.509864][ T267] ? __free_zapped_classes (./include/linux/bitmap.h:494 kernel/locking/lockdep.c:6331) [ 10.510027][ T267] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 10.510198][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.510414][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.510580][ T267] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 10.510746][ T267] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 10.510911][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.511113][ 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) [ 10.511238][ T267] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.511440][ T267] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 10.511606][ T267] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 10.511773][ T267] netdev_change_features (net/core/dev.c:10328) [ 10.511944][ T267] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 10.512148][ T267] ? ethnl_default_notify (net/ethtool/netlink.c:733) [ 10.512315][ T267] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 10.512479][ T267] ? ethtool_rx_flow_rule_create (net/ethtool/ioctl.c:3683) [ 10.512685][ T267] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 10.512894][ T267] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4108) [ 10.513064][ T267] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 10.513239][ T267] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 10.513407][ T267] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 10.513571][ T267] netdev_change_features (net/core/dev.c:10328) [ 10.513735][ T267] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 10.513942][ T267] ? sysfs_create_file_ns (fs/sysfs/file.c:372) [ 10.514113][ T267] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 10.514279][ T267] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 10.514481][ T267] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 10.514697][ T267] ? sysfs_create_files (./include/linux/sysfs.h:788 (discriminator 4) fs/sysfs/file.c:390 (discriminator 4)) [ 10.514867][ T267] bond_enslave (drivers/net/bonding/bond_main.c:2355) [ 10.515036][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.515203][ T267] ? __pfx_bond_enslave (drivers/net/bonding/bond_main.c:1956) [ 10.515366][ T267] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:774) [ 10.515537][ T267] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 10.515701][ T267] ? __kernel_text_address (kernel/extable.c:79) [ 10.515868][ T267] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 10.516034][ T267] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 10.516240][ T267] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.516406][ T267] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2646) [ 10.516572][ 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) [ 10.516736][ T267] ? rtnl_is_locked (net/core/rtnetlink.c:163) [ 10.516899][ T267] ? netdev_master_upper_dev_get (net/core/dev.c:7230) [ 10.517113][ T267] do_setlink.constprop.0 (net/core/rtnetlink.c:3125) [ 10.517295][ T267] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:2999) [ 10.517516][ T267] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 10.517698][ T267] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 10.517877][ T267] ? rtnl_newlink (./include/linux/slab.h:901 net/core/rtnetlink.c:3921) [ 10.518052][ T267] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 10.518235][ 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) [ 10.518412][ T267] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79) [ 10.518633][ T267] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 10.518817][ T267] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 37)) [ 10.518999][ T267] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735) [ 10.519178][ T267] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 10.519359][ T267] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020) [ 10.519535][ T267] ? __pfx___mutex_lock (kernel/locking/mutex.c:734) [ 10.519720][ T267] ? __rtnl_newlink (net/core/rtnetlink.c:3871) [ 10.519900][ T267] rtnl_newlink (net/core/rtnetlink.c:345 net/core/rtnetlink.c:4022) [ 10.520080][ T267] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 10.520258][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.520451][ T267] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.520630][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.520814][ T267] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6909) [ 10.520993][ T267] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912) [ 10.521174][ T267] rtnetlink_rcv_msg (net/core/rtnetlink.c:6911) [ 10.521352][ T267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 10.521539][ 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) [ 10.521717][ T267] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.521854][ T267] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.522037][ T267] netlink_rcv_skb (net/netlink/af_netlink.c:2543) [ 10.522223][ T267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814) [ 10.522406][ T267] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520) [ 10.522589][ T267] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 10.522768][ 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) [ 10.522944][ T267] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348) [ 10.523122][ T267] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333) [ 10.523303][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.523480][ T267] netlink_sendmsg (net/netlink/af_netlink.c:1892) [ 10.523660][ T267] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811) [ 10.523846][ T267] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594) [ 10.524031][ T267] ? __pfx_____sys_sendmsg (net/socket.c:2540) [ 10.524212][ T267] ? __pfx_copy_msghdr_from_user (net/socket.c:2520) [ 10.524437][ T267] ___sys_sendmsg (net/socket.c:2650) [ 10.524614][ T267] ? __pfx____sys_sendmsg (net/socket.c:2637) [ 10.524799][ T267] ? kasan_save_stack (mm/kasan/common.c:49) [ 10.524978][ T267] ? kasan_save_stack (mm/kasan/common.c:48) [ 10.525153][ T267] ? __kasan_record_aux_stack (mm/kasan/generic.c:544) [ 10.525334][ 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) [ 10.525558][ T267] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539) [ 10.525745][ T267] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 10.525924][ T267] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 10.526148][ T267] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 10.526332][ T267] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 10.526510][ T267] ? __lock_release (kernel/locking/lockdep.c:5525) [ 10.526687][ 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) [ 10.526871][ T267] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.527054][ T267] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 10.527234][ T267] __sys_sendmsg (net/socket.c:2680) [ 10.527413][ T267] ? __pfx___sys_sendmsg (net/socket.c:2665) [ 10.527591][ T267] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643) [ 10.527821][ T267] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 10.528000][ T267] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 10.528232][ T267] RIP: 0033:0x7f8c0b2a79a7 [ 10.528422][ 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) [ 10.529053][ T267] RSP: 002b:00007ffe95322cd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.529323][ T267] RAX: ffffffffffffffda RBX: 00007ffe95323400 RCX: 00007f8c0b2a79a7 [ 10.529594][ T267] RDX: 0000000000000000 RSI: 00007ffe95322d40 RDI: 0000000000000005 [ 10.529863][ T267] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 10.530128][ T267] R10: 0000000012230910 R11: 0000000000000246 R12: 0000000000000004 Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain