====================================== | [ 32.066912][ T239] 1 lock held by unsigned-md5_ip/239: | [ 32.067079][ T239] #0: ffff888006819098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 32.067672][ T239] | [ 32.067672][ T239] stack backtrace: [ 32.068151][ T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 32.068587][ T239] Call Trace: [ 32.068713][ T239] [ 32.068803][ T239] dump_stack_lvl (lib/dump_stack.c:123) [ 32.068974][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 32.069146][ T239] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 32.069310][ T239] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 32.069476][ T239] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 32.069672][ T239] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 32.069830][ T239] ? kasan_save_stack (mm/kasan/common.c:48) [ 32.069984][ T239] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 32.070131][ T239] ? kasan_save_free_info (mm/kasan/generic.c:582) [ 32.070297][ T239] ? __kasan_slab_free (mm/kasan/common.c:271) [ 32.070447][ T239] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 32.070562][ T239] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 32.070748][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 32.070958][ T239] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 32.071208][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 32.071459][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) [ 32.071730][ T239] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 32.071997][ T239] ? 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) [ 32.072287][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 32.072509][ T239] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 32.072761][ T239] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 32.072957][ T239] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 32.073114][ T239] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 32.073293][ T239] ? release_sock (net/core/sock.c:3630) [ 32.073463][ T239] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 32.073613][ T239] ? release_sock (net/core/sock.c:3630) [ 32.073767][ T239] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 32.073932][ T239] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 32.074100][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 32.074255][ T239] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 32.074407][ T239] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 32.074559][ T239] ? 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) [ 32.074716][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 32.074847][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 32.075010][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 32.075183][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) [ 32.075336][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 32.075487][ T239] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 32.075634][ T239] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 32.075802][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 32.075972][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 32.076130][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 32.076287][ T239] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 32.076460][ T239] do_sock_getsockopt (net/socket.c:2396) [ 32.076624][ T239] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 32.076776][ T239] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 32.076952][ T239] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 32.077075][ T239] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 32.077246][ T239] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 32.077415][ T239] ? __pfx_task_work_run (kernel/task_work.c:207) [ 32.077588][ T239] __x64_sys_getsockopt (net/socket.c:2432) [ 32.077740][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 32.077949][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 32.078131][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 32.078328][ T239] RIP: 0033:0x7f46d599a46e [ 32.078527][ T239] Code: 1f 44 00 00 48 8b 15 91 99 0a 00 f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 59 All code ======== 0: 1f (bad) 1: 44 00 00 add %r8b,(%rax) 4: 48 8b 15 91 99 0a 00 mov 0xa9991(%rip),%rdx # 0xa999c b: f7 d8 neg %eax d: 64 89 02 mov %eax,%fs:(%rdx) 10: b8 ff ff ff ff mov $0xffffffff,%eax 15: eb b8 jmp 0xffffffffffffffcf 17: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1c: f3 0f 1e fa endbr64 20: 49 89 ca mov %rcx,%r10 23: b8 37 00 00 00 mov $0x37,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 0a ja 0x3c 32: c3 ret 33: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 3a: 00 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 15 .byte 0x15 3f: 59 pop %rcx Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 0a ja 0x12 8: c3 ret 9: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 10: 00 00 12: 48 rex.W 13: 8b .byte 0x8b 14: 15 .byte 0x15 15: 59 pop %rcx [ 32.079179][ T239] RSP: 002b:00007f46d5045918 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 32.079450][ T239] RAX: ffffffffffffffda RBX: 00007f46d5045be0 RCX: 00007f46d599a46e [ 32.079713][ T239] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 32.079987][ T239] RBP: 00007f46d5045930 R08: 00007f46d504592c R09: 0000000000000064 [ 32.080245][ T239] R10: 00007f46d5045930 R11: 0000000000000246 R12: 000000000000000a [ 32.080507][ T239] R13: 0000000000000064 R14: 0000000000000000 R15: 0000000000000064 | [ 32.083836][ T239] 1 lock held by unsigned-md5_ip/239: | [ 32.084016][ T239] #0: ffff888006819098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 32.084339][ T239] | [ 32.084339][ T239] stack backtrace: [ 32.084832][ T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 32.085173][ T239] Call Trace: [ 32.085297][ T239] [ 32.085381][ T239] dump_stack_lvl (lib/dump_stack.c:123) [ 32.085567][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 32.085725][ T239] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 32.085903][ T239] tcp_ao_do_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222) [ 32.086060][ T239] tcp_connect (net/ipv4/tcp_output.c:4114) [ 32.086232][ T239] ? rt6_get_cookie (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/ip6_fib.h:312) [ 32.086399][ T239] tcp_v6_connect (net/ipv6/tcp_ipv6.c:333) [ 32.086564][ T239] ? __pfx_tcp_v6_connect (net/ipv6/tcp_ipv6.c:137) [ 32.086754][ T239] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 32.086934][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 32.087096][ T239] ? 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) [ 32.087273][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 32.087399][ T239] __inet_stream_connect (net/ipv4/af_inet.c:677) [ 32.087557][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 32.087787][ T239] inet_stream_connect (net/ipv4/af_inet.c:749) [ 32.088034][ T239] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 32.088299][ T239] ? __pfx___sys_connect (net/socket.c:2078) [ 32.088563][ T239] ? do_fcntl (fs/fcntl.c:473) [ 32.088775][ T239] ? __fget_files (fs/file.c:1009) [ 32.089092][ T239] __x64_sys_connect (net/socket.c:2095) [ 32.089348][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 32.089579][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 32.089882][ T239] RIP: 0033:0x7f46d599a40b [ 32.090133][ T239] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 eb c7 f4 ff 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 41 c8 f4 ff 8b 44 All code ======== 0: 83 ec 18 sub $0x18,%esp 3: 89 54 24 0c mov %edx,0xc(%rsp) 7: 48 89 34 24 mov %rsi,(%rsp) b: 89 7c 24 08 mov %edi,0x8(%rsp) f: e8 eb c7 f4 ff call 0xfffffffffff4c7ff 14: 8b 54 24 0c mov 0xc(%rsp),%edx 18: 48 8b 34 24 mov (%rsp),%rsi 1c: 41 89 c0 mov %eax,%r8d 1f: 8b 7c 24 08 mov 0x8(%rsp),%edi 23: b8 2a 00 00 00 mov $0x2a,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 35 ja 0x67 32: 44 89 c7 mov %r8d,%edi 35: 89 44 24 08 mov %eax,0x8(%rsp) 39: e8 41 c8 f4 ff call 0xfffffffffff4c87f 3e: 8b .byte 0x8b 3f: 44 rex.R Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 35 ja 0x3d 8: 44 89 c7 mov %r8d,%edi b: 89 44 24 08 mov %eax,0x8(%rsp) f: e8 41 c8 f4 ff call 0xfffffffffff4c855 14: 8b .byte 0x8b 15: 44 rex.R [ 32.091018][ T239] RSP: 002b:00007f46d5045d20 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 32.091434][ T239] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f46d599a40b [ 32.091867][ T239] RDX: 000000000000001c RSI: 00007f46d5045d80 RDI: 000000000000000a [ 32.092294][ T239] RBP: 000000000000000a R08: 0000000000000000 R09: 00000000ffffffff [ 32.092702][ T239] R10: 00007f46d5852598 R11: 0000000000000293 R12: 0000000000412e10 [ 32.093086][ T239] R13: 0000000000000005 R14: 00007f46d5045d80 R15: 0000000000000000 | [ 32.102853][ T239] 1 lock held by unsigned-md5_ip/239: | [ 32.103046][ T239] #0: ffff888006819098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 32.103570][ T239] | [ 32.103570][ T239] stack backtrace: [ 32.104258][ T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 32.104784][ T239] Call Trace: [ 32.104934][ T239] [ 32.105027][ T239] dump_stack_lvl (lib/dump_stack.c:123) [ 32.105211][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 32.105388][ T239] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 32.105562][ T239] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 32.105739][ T239] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 32.105995][ T239] ? 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) [ 32.106183][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 32.106343][ T239] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 32.106655][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 32.106974][ T239] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 32.107222][ T239] ? ktime_get (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:395 (discriminator 4) kernel/time/timekeeping.c:403 (discriminator 4) kernel/time/timekeeping.c:850 (discriminator 4)) [ 32.107448][ T239] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 32.107723][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) [ 32.108005][ T239] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 32.108276][ T239] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 32.108601][ T239] ? 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) [ 32.108876][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 32.109088][ T239] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) [ 32.109373][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 32.109712][ T239] __release_sock (net/core/sock.c:3079) [ 32.110010][ T239] release_sock (net/core/sock.c:3633) [ 32.110281][ T239] inet_stream_connect (net/ipv4/af_inet.c:751) [ 32.110553][ T239] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 32.110811][ T239] ? __pfx___sys_connect (net/socket.c:2078) [ 32.111065][ T239] ? do_fcntl (fs/fcntl.c:473) [ 32.111277][ T239] ? __fget_files (fs/file.c:1009) [ 32.111560][ T239] __x64_sys_connect (net/socket.c:2095) [ 32.111816][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 32.112105][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 32.112469][ T239] RIP: 0033:0x7f46d599a40b [ 32.112789][ T239] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 eb c7 f4 ff 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 41 c8 f4 ff 8b 44 All code ======== 0: 83 ec 18 sub $0x18,%esp 3: 89 54 24 0c mov %edx,0xc(%rsp) 7: 48 89 34 24 mov %rsi,(%rsp) b: 89 7c 24 08 mov %edi,0x8(%rsp) f: e8 eb c7 f4 ff call 0xfffffffffff4c7ff 14: 8b 54 24 0c mov 0xc(%rsp),%edx 18: 48 8b 34 24 mov (%rsp),%rsi 1c: 41 89 c0 mov %eax,%r8d 1f: 8b 7c 24 08 mov 0x8(%rsp),%edi 23: b8 2a 00 00 00 mov $0x2a,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 35 ja 0x67 32: 44 89 c7 mov %r8d,%edi 35: 89 44 24 08 mov %eax,0x8(%rsp) 39: e8 41 c8 f4 ff call 0xfffffffffff4c87f 3e: 8b .byte 0x8b 3f: 44 rex.R Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 35 ja 0x3d 8: 44 89 c7 mov %r8d,%edi b: 89 44 24 08 mov %eax,0x8(%rsp) f: e8 41 c8 f4 ff call 0xfffffffffff4c855 14: 8b .byte 0x8b 15: 44 rex.R [ 32.113791][ T239] RSP: 002b:00007f46d5045d20 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 32.114232][ T239] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f46d599a40b [ 32.114674][ T239] RDX: 000000000000001c RSI: 00007f46d5045d80 RDI: 000000000000000a [ 32.115069][ T239] RBP: 000000000000000a R08: 0000000000000000 R09: 00000000ffffffff [ 32.115463][ T239] R10: 00007f46d5852598 R11: 0000000000000293 R12: 0000000000412e10 Finger prints: lockdep_rcu_suspicious:tcp_ao_do_lookup:tcp_connect:tcp_v6_connect:__inet_stream_connect lockdep_rcu_suspicious:tcp_ao_finish_connect:tcp_finish_connect:tcp_rcv_synsent_state_process:tcp_rcv_state_process lockdep_rcu_suspicious:tcp_ao_copy_mkts_to_user:do_tcp_getsockopt:tcp_getsockopt:do_sock_getsockopt