====================================== | [ 27.309763][ T264] 1 lock held by ip/264: | [ 27.309895][ T264] #0: ffffffff92dd2948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) | [ 27.310481][ T264] | [ 27.310481][ T264] stack backtrace: [ 27.311015][ T264] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.311430][ T264] Call Trace: [ 27.311580][ T264] [ 27.311685][ T264] dump_stack_lvl (lib/dump_stack.c:122) [ 27.311875][ T264] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) [ 27.312065][ T264] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) [ 27.312257][ T264] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) [ 27.312497][ T264] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) [ 27.312682][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.312918][ T264] br_add_if (net/bridge/br_if.c:692) [ 27.313064][ T264] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 27.313263][ T264] ? netdev_master_upper_dev_get (net/core/dev.c:7102) [ 27.313522][ T264] do_setlink (net/core/rtnetlink.c:2907) [ 27.313716][ T264] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) [ 27.313913][ T264] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) [ 27.314096][ T264] ? is_bpf_text_address (./kernel/bpf/core.c:772) [ 27.314287][ T264] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 27.314476][ T264] ? __kernel_text_address (kernel/extable.c:79) [ 27.314667][ T264] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 27.314861][ T264] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 27.315095][ T264] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 27.315298][ T264] ? stack_trace_save (kernel/stacktrace.c:123) [ 27.315483][ T264] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 27.315688][ T264] ? __pfx_validate_nla (lib/nlattr.c:396) [ 27.315873][ T264] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 27.316018][ T264] ? kasan_save_stack (mm/kasan/common.c:49) [ 27.316214][ T264] ? __nla_validate_parse (lib/nlattr.c:638) [ 27.316411][ T264] __rtnl_newlink (net/core/rtnetlink.c:3696) [ 27.316605][ T264] ? 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:227) [ 27.316791][ T264] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) [ 27.316987][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.317215][ T264] ? __create_object (mm/kmemleak.c:751) [ 27.317414][ T264] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 27.317609][ T264] rtnl_newlink (net/core/rtnetlink.c:3744) [ 27.317769][ T264] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) [ 27.317968][ T264] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 27.318154][ T264] ? 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:227) [ 27.318336][ T264] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 27.318493][ T264] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 27.318678][ T264] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 27.318865][ T264] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 27.319053][ T264] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) [ 27.319255][ T264] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) [ 27.319458][ T264] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 27.319646][ T264] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 27.319845][ T264] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 27.320029][ T264] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 27.320235][ T264] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 27.320420][ T264] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 27.320599][ T264] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) [ 27.320791][ T264] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 27.320987][ T264] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) [ 27.321177][ T264] ? __pfx_____sys_sendmsg (net/socket.c:2543) [ 27.321366][ T264] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) [ 27.321592][ T264] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) [ 27.321791][ T264] ___sys_sendmsg (net/socket.c:2653) [ 27.321977][ T264] ? __pfx____sys_sendmsg (net/socket.c:2640) [ 27.322159][ T264] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 27.322341][ T264] ? __lock_release (kernel/locking/lockdep.c:5435) [ 27.322523][ T264] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) [ 27.322752][ T264] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) [ 27.322939][ T264] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 27.323127][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.323357][ T264] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 27.323545][ T264] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) [ 27.323729][ T264] ? __pfx___sys_sendmsg (net/socket.c:2668) [ 27.323912][ T264] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) [ 27.324118][ T264] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.324304][ T264] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.324532][ T264] RIP: 0033:0x7f645555f7b7 [ 27.324723][ T264] 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) [ 27.325360][ T264] RSP: 002b:00007ffd3d07fbf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 27.325638][ T264] RAX: ffffffffffffffda RBX: 00007ffd3d080320 RCX: 00007f645555f7b7 [ 27.325913][ T264] RDX: 0000000000000000 RSI: 00007ffd3d07fc60 RDI: 0000000000000005 [ 27.326183][ T264] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 27.326449][ T264] R10: 000000000ca2d910 R11: 0000000000000246 R12: 0000000000000004 [ 27.326727][ T264] R13: 0000000066bea3bc R14: 0000000000496600 R15: 0000000000000000 | [ 27.328852][ T264] 1 lock held by ip/264: | [ 27.329015][ T264] #0: ffffffff92dd2948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) | [ 27.329359][ T264] | [ 27.329359][ T264] stack backtrace: [ 27.329867][ T264] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.330242][ T264] Call Trace: [ 27.330374][ T264] [ 27.330466][ T264] dump_stack_lvl (lib/dump_stack.c:122) [ 27.330644][ T264] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) [ 27.330818][ T264] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) [ 27.331043][ T264] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) [ 27.331216][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.331438][ T264] br_add_if (net/bridge/br_if.c:692) [ 27.331574][ T264] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 27.331744][ T264] ? netdev_master_upper_dev_get (net/core/dev.c:7102) [ 27.331970][ T264] do_setlink (net/core/rtnetlink.c:2907) [ 27.332144][ T264] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) [ 27.332315][ T264] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) [ 27.332491][ T264] ? is_bpf_text_address (./kernel/bpf/core.c:772) [ 27.332664][ T264] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 27.332837][ T264] ? __kernel_text_address (kernel/extable.c:79) [ 27.333006][ T264] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 27.333175][ T264] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 27.333393][ T264] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 27.333578][ T264] ? stack_trace_save (kernel/stacktrace.c:123) [ 27.333748][ T264] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 27.333923][ T264] ? __pfx_validate_nla (lib/nlattr.c:396) [ 27.334096][ T264] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 27.334228][ T264] ? kasan_save_stack (mm/kasan/common.c:49) [ 27.334402][ T264] ? __nla_validate_parse (lib/nlattr.c:638) [ 27.334576][ T264] __rtnl_newlink (net/core/rtnetlink.c:3696) [ 27.334755][ T264] ? 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:227) [ 27.334931][ T264] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) [ 27.335108][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.335321][ T264] ? __create_object (mm/kmemleak.c:751) [ 27.335495][ T264] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 27.335676][ T264] rtnl_newlink (net/core/rtnetlink.c:3744) [ 27.335806][ T264] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) [ 27.335980][ T264] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 27.336148][ T264] ? 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:227) [ 27.336323][ T264] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 27.336455][ T264] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 27.336627][ T264] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 27.336802][ T264] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 27.336984][ T264] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) [ 27.337185][ T264] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) [ 27.337369][ T264] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 27.337555][ T264] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 27.337739][ T264] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 27.337916][ T264] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 27.338090][ T264] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 27.338269][ T264] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 27.338436][ T264] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) [ 27.338618][ T264] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 27.338798][ T264] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) [ 27.338981][ T264] ? __pfx_____sys_sendmsg (net/socket.c:2543) [ 27.339150][ T264] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) [ 27.339362][ T264] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) [ 27.339542][ T264] ___sys_sendmsg (net/socket.c:2653) [ 27.339721][ T264] ? __pfx____sys_sendmsg (net/socket.c:2640) [ 27.339895][ T264] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 27.340071][ T264] ? __lock_release (kernel/locking/lockdep.c:5435) [ 27.340242][ T264] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) [ 27.340462][ T264] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) [ 27.340637][ T264] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 27.340815][ T264] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 27.341036][ T264] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 27.341215][ T264] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) [ 27.341385][ T264] ? __pfx___sys_sendmsg (net/socket.c:2668) [ 27.341550][ T264] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) [ 27.341741][ T264] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.341921][ T264] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.342130][ T264] RIP: 0033:0x7f645555f7b7 [ 27.342312][ T264] 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) [ 27.343060][ T264] RSP: 002b:00007ffd3d07fbf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 27.343410][ T264] RAX: ffffffffffffffda RBX: 00007ffd3d080320 RCX: 00007f645555f7b7 [ 27.343667][ T264] RDX: 0000000000000000 RSI: 00007ffd3d07fc60 RDI: 0000000000000005 [ 27.343926][ T264] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 27.344263][ T264] R10: 000000000ca2d910 R11: 0000000000000246 R12: 0000000000000004 Finger prints: lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_add_if:do_setlink