====================================== | [ 34.839876][ T275] 1 lock held by ip/275: | [ 34.840274][ T275] #0: ffffffff8ebc5cc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) | [ 34.840603][ T275] | [ 34.840603][ T275] stack backtrace: [ 34.841081][ T275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.841463][ T275] Call Trace: [ 34.841601][ T275] [ 34.841690][ T275] dump_stack_lvl (lib/dump_stack.c:122) [ 34.841877][ T275] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) [ 34.842055][ T275] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge [ 34.842322][ T275] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge [ 34.842558][ T275] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge [ 34.842757][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.842969][ T275] br_add_if (net/bridge/br_if.c:692) bridge [ 34.843170][ T275] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 34.843365][ T275] ? netdev_master_upper_dev_get (net/core/dev.c:7102) [ 34.843587][ T275] do_setlink (net/core/rtnetlink.c:2907) [ 34.843757][ T275] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) [ 34.843927][ T275] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) [ 34.844101][ T275] ? is_bpf_text_address (./kernel/bpf/core.c:772) [ 34.844287][ T275] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 34.844459][ T275] ? __kernel_text_address (kernel/extable.c:79) [ 34.844633][ T275] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 34.844801][ T275] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 34.845024][ T275] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 34.845210][ T275] ? stack_trace_save (kernel/stacktrace.c:123) [ 34.845403][ T275] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 34.845573][ T275] ? __pfx_validate_nla (lib/nlattr.c:396) [ 34.845753][ T275] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 34.845889][ T275] ? kasan_save_stack (mm/kasan/common.c:49) [ 34.846067][ T275] ? __nla_validate_parse (lib/nlattr.c:638) [ 34.846257][ T275] __rtnl_newlink (net/core/rtnetlink.c:3696) [ 34.846444][ T275] ? 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) [ 34.846617][ T275] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) [ 34.846787][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.846995][ T275] ? __create_object (mm/kmemleak.c:751) [ 34.847169][ T275] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 34.847355][ T275] rtnl_newlink (net/core/rtnetlink.c:3744) [ 34.847483][ T275] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) [ 34.847669][ T275] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 34.847837][ T275] ? 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) [ 34.848006][ T275] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 34.848141][ T275] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 34.848325][ T275] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 34.848491][ T275] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 34.848664][ T275] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) [ 34.848845][ T275] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) [ 34.849026][ T275] ? 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) [ 34.849200][ T275] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 34.849386][ T275] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 34.849564][ T275] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 34.849736][ T275] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 34.849903][ T275] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 34.850083][ T275] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) [ 34.850265][ T275] ? __pfx_____sys_sendmsg (net/socket.c:2543) [ 34.850437][ T275] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) [ 34.850643][ T275] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) [ 34.850823][ T275] ___sys_sendmsg (net/socket.c:2653) [ 34.850995][ T275] ? __pfx____sys_sendmsg (net/socket.c:2640) [ 34.851161][ T275] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 34.851341][ T275] ? __lock_release (kernel/locking/lockdep.c:5435) [ 34.851511][ T275] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) [ 34.851722][ T275] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) [ 34.851905][ T275] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 34.852092][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.852307][ T275] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 34.852480][ T275] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) [ 34.852644][ T275] ? __pfx___sys_sendmsg (net/socket.c:2668) [ 34.852806][ T275] ? __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) [ 34.852990][ T275] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 34.853167][ T275] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 34.853396][ T275] RIP: 0033:0x7f5f83c437b7 [ 34.853569][ T275] 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) [ 34.854311][ T275] RSP: 002b:00007ffd0b6b8d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.854566][ T275] RAX: ffffffffffffffda RBX: 00007ffd0b6b9480 RCX: 00007f5f83c437b7 [ 34.854923][ T275] RDX: 0000000000000000 RSI: 00007ffd0b6b8dc0 RDI: 0000000000000005 [ 34.855167][ T275] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000 [ 34.855420][ T275] R10: 000000003d539910 R11: 0000000000000246 R12: 0000000000000003 [ 34.855771][ T275] R13: 0000000066bea6d6 R14: 0000000000496600 R15: 0000000000000000 | [ 34.858011][ T275] 1 lock held by ip/275: | [ 34.858139][ T275] #0: ffffffff8ebc5cc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) | [ 34.858466][ T275] | [ 34.858466][ T275] stack backtrace: [ 34.859020][ T275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.859398][ T275] Call Trace: [ 34.859524][ T275] [ 34.859615][ T275] dump_stack_lvl (lib/dump_stack.c:122) [ 34.859883][ T275] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) [ 34.860058][ T275] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge [ 34.860310][ T275] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge [ 34.860509][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.860825][ T275] br_add_if (net/bridge/br_if.c:692) bridge [ 34.861018][ T275] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 34.861185][ T275] ? netdev_master_upper_dev_get (net/core/dev.c:7102) [ 34.861508][ T275] do_setlink (net/core/rtnetlink.c:2907) [ 34.861677][ T275] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) [ 34.861848][ T275] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) [ 34.862024][ T275] ? is_bpf_text_address (./kernel/bpf/core.c:772) [ 34.862219][ T275] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 34.862576][ T275] ? __kernel_text_address (kernel/extable.c:79) [ 34.862743][ T275] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) [ 34.862909][ T275] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 34.863117][ T275] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 34.863311][ T275] ? stack_trace_save (kernel/stacktrace.c:123) [ 34.863491][ T275] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 34.863664][ T275] ? __pfx_validate_nla (lib/nlattr.c:396) [ 34.863834][ T275] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 34.863974][ T275] ? kasan_save_stack (mm/kasan/common.c:49) [ 34.864144][ T275] ? __nla_validate_parse (lib/nlattr.c:638) [ 34.864332][ T275] __rtnl_newlink (net/core/rtnetlink.c:3696) [ 34.864508][ T275] ? 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) [ 34.864775][ T275] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) [ 34.864947][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.865154][ T275] ? __create_object (mm/kmemleak.c:751) [ 34.865352][ T275] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 34.865717][ T275] rtnl_newlink (net/core/rtnetlink.c:3744) [ 34.865844][ T275] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) [ 34.866016][ T275] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 34.866180][ T275] ? 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) [ 34.866359][ T275] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) [ 34.866586][ T275] ? __lock_acquire (kernel/locking/lockdep.c:5142) [ 34.866755][ T275] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 34.866924][ T275] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) [ 34.867104][ T275] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) [ 34.867441][ T275] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) [ 34.867617][ T275] ? 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) [ 34.867786][ T275] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 34.867953][ T275] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 34.868125][ T275] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 34.868304][ T275] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 34.868486][ T275] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) [ 34.868658][ T275] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) [ 34.868827][ T275] ? __pfx_____sys_sendmsg (net/socket.c:2543) [ 34.868991][ T275] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) [ 34.869194][ T275] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) [ 34.869388][ T275] ___sys_sendmsg (net/socket.c:2653) [ 34.869560][ T275] ? __pfx____sys_sendmsg (net/socket.c:2640) [ 34.869822][ T275] ? find_held_lock (kernel/locking/lockdep.c:5249) [ 34.869998][ T275] ? __lock_release (kernel/locking/lockdep.c:5435) [ 34.870161][ T275] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) [ 34.870377][ T275] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) [ 34.870643][ T275] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 34.870815][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 34.871026][ T275] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 34.871205][ T275] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) [ 34.871483][ T275] ? __pfx___sys_sendmsg (net/socket.c:2668) [ 34.871658][ T275] ? __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) [ 34.871844][ T275] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 34.872014][ T275] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 34.872387][ T275] RIP: 0033:0x7f5f83c437b7 [ 34.872563][ T275] 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) [ 34.873134][ T275] RSP: 002b:00007ffd0b6b8d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.873410][ T275] RAX: ffffffffffffffda RBX: 00007ffd0b6b9480 RCX: 00007f5f83c437b7 [ 34.873659][ T275] RDX: 0000000000000000 RSI: 00007ffd0b6b8dc0 RDI: 0000000000000005 [ 34.873904][ T275] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000 [ 34.874154][ T275] R10: 000000003d539910 R11: 0000000000000246 R12: 0000000000000003 Finger prints: lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_add_if:do_setlink