====================================== | [ 11.928584][ T268] #0: ffffffffa9201dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink (net/core/rtnetlink.c:328 net/core/rtnetlink.c:4011) | [ 11.928884][ T268] #1: ffffffffa91f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 11.929221][ T268] | [ 11.929221][ T268] stack backtrace: [ 11.929676][ T268] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.929885][ T268] Call Trace: [ 11.930019][ T268] [ 11.930107][ T268] dump_stack_lvl (lib/dump_stack.c:123) [ 11.930274][ T268] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 11.930443][ T268] validate_chain (kernel/locking/lockdep.c:3894) [ 11.930613][ T268] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 11.930782][ T268] ? 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) [ 11.930947][ T268] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 11.931076][ T268] __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.931238][ T268] ? __free_zapped_classes (./include/linux/bitmap.h:494 kernel/locking/lockdep.c:6331) [ 11.931405][ T268] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 11.931574][ T268] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.931779][ T268] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.931949][ T268] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 11.932115][ T268] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 11.932277][ T268] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.932484][ T268] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 11.932613][ T268] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.932814][ T268] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 11.932985][ T268] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 11.933152][ T268] netdev_change_features (net/core/dev.c:10328) [ 11.933322][ T268] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 11.933527][ T268] ? ethnl_default_notify (net/ethtool/netlink.c:733) [ 11.933695][ T268] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.933861][ T268] ? ethtool_rx_flow_rule_create (net/ethtool/ioctl.c:3683) [ 11.934077][ T268] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.934300][ T268] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4108) [ 11.934468][ T268] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 11.934639][ T268] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 11.934806][ T268] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 11.934972][ T268] netdev_change_features (net/core/dev.c:10328) [ 11.935139][ T268] ? __pfx_netdev_change_features (net/core/dev.c:10328) [ 11.935363][ T268] ? sysfs_create_file_ns (fs/sysfs/file.c:372) [ 11.935533][ T268] bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.935723][ T268] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 11.935930][ T268] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548) [ 11.936139][ T268] ? sysfs_create_files (./include/linux/sysfs.h:788 (discriminator 4) fs/sysfs/file.c:390 (discriminator 4)) [ 11.936305][ T268] bond_enslave (drivers/net/bonding/bond_main.c:2355) [ 11.936473][ T268] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.936647][ T268] ? __pfx_bond_enslave (drivers/net/bonding/bond_main.c:1956) [ 11.936814][ T268] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:774) [ 11.936982][ T268] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 11.937149][ T268] ? __kernel_text_address (kernel/extable.c:79) [ 11.937319][ T268] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 11.937482][ T268] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 11.937688][ T268] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 11.937859][ T268] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2637) [ 11.938042][ T268] ? 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) [ 11.938219][ T268] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 11.938387][ T268] ? netdev_master_upper_dev_get (net/core/dev.c:7230) [ 11.938602][ T268] do_setlink.constprop.0 (net/core/rtnetlink.c:3116) [ 11.938783][ T268] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:2990) [ 11.938995][ T268] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 11.939160][ T268] ? rtnl_newlink (net/core/rtnetlink.c:328 net/core/rtnetlink.c:4011) [ 11.939328][ T268] ? rtnl_newlink (./include/linux/slab.h:901 net/core/rtnetlink.c:3912) [ 11.939500][ T268] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6902) [ 11.939664][ T268] ? __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) [ 11.939826][ T268] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79) [ 11.940036][ T268] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 11.940210][ T268] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 37)) [ 11.940375][ T268] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735) [ 11.940540][ T268] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 11.940711][ T268] ? rtnl_newlink (net/core/rtnetlink.c:328 net/core/rtnetlink.c:4011) [ 11.940874][ T268] ? __pfx___mutex_lock (kernel/locking/mutex.c:734) [ 11.941038][ T268] ? __rtnl_newlink (net/core/rtnetlink.c:3862) [ 11.941204][ T268] rtnl_newlink (net/core/rtnetlink.c:336 net/core/rtnetlink.c:4013) [ 11.941371][ T268] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3903) [ 11.941534][ T268] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.941697][ T268] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 11.941861][ T268] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.942036][ T268] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6900) [ 11.942203][ T268] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3903) [ 11.942366][ T268] rtnetlink_rcv_msg (net/core/rtnetlink.c:6902) [ 11.942531][ T268] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805) [ 11.942695][ T268] ? 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) [ 11.942856][ T268] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 11.942983][ T268] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.943152][ T268] netlink_rcv_skb (net/netlink/af_netlink.c:2543) [ 11.943321][ T268] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805) [ 11.943489][ T268] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520) [ 11.943657][ T268] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 11.943823][ T268] ? 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) [ 11.943990][ T268] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348) [ 11.944156][ T268] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333) [ 11.944325][ T268] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.944490][ T268] netlink_sendmsg (net/netlink/af_netlink.c:1892) [ 11.944655][ T268] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811) [ 11.944823][ T268] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594) [ 11.944986][ T268] ? __pfx_____sys_sendmsg (net/socket.c:2540) [ 11.945150][ T268] ? __pfx_copy_msghdr_from_user (net/socket.c:2520) [ 11.945369][ T268] ___sys_sendmsg (net/socket.c:2650) [ 11.945535][ T268] ? __pfx____sys_sendmsg (net/socket.c:2637) [ 11.945699][ T268] ? kasan_save_stack (mm/kasan/common.c:49) [ 11.945877][ T268] ? kasan_save_stack (mm/kasan/common.c:48) [ 11.946063][ T268] ? __kasan_record_aux_stack (mm/kasan/generic.c:544) [ 11.946243][ T268] ? __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) [ 11.946448][ T268] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539) [ 11.946612][ T268] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 11.946775][ T268] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 11.946978][ T268] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 11.947146][ T268] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 11.947323][ T268] ? __lock_release (kernel/locking/lockdep.c:5525) [ 11.947487][ T268] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2058 arch/x86/mm/physaddr.c:65) [ 11.947653][ T268] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 11.947815][ T268] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 11.947980][ T268] __sys_sendmsg (net/socket.c:2680) [ 11.948142][ T268] ? __pfx___sys_sendmsg (net/socket.c:2665) [ 11.948301][ T268] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643) [ 11.948518][ T268] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 11.948683][ T268] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 11.948885][ T268] RIP: 0033:0x7efed19ce9a7 [ 11.949055][ T268] 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) [ 11.949635][ T268] RSP: 002b:00007fff0a1999b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.949883][ T268] RAX: ffffffffffffffda RBX: 00007fff0a19a0e0 RCX: 00007efed19ce9a7 [ 11.950132][ T268] RDX: 0000000000000000 RSI: 00007fff0a199a20 RDI: 0000000000000005 [ 11.950388][ T268] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 11.950644][ T268] R10: 00000000337de910 R11: 0000000000000246 R12: 0000000000000004 Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain