====================================== | [ 26.626875][ T242] 1 lock held by connect-deny_ip/242: | [ 26.627042][ T242] #0: ffff888007a91098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 26.627387][ T242] | [ 26.627387][ T242] stack backtrace: [ 26.627885][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.628246][ T242] Call Trace: [ 26.628382][ T242] [ 26.628474][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 26.628647][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.628814][ T242] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 26.628977][ T242] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 26.629146][ T242] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 26.629347][ T242] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 26.629518][ T242] ? kasan_save_stack (mm/kasan/common.c:48) [ 26.629684][ T242] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 26.629848][ T242] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 26.629972][ T242] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 26.630164][ T242] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.630334][ T242] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 26.630494][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.630663][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.630823][ T242] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.630989][ T242] ? 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) [ 26.631151][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.631287][ T242] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.631447][ T242] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.631616][ T242] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 26.631776][ T242] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 26.631958][ T242] ? release_sock (net/core/sock.c:3630) [ 26.632117][ T242] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 26.632284][ T242] ? release_sock (net/core/sock.c:3630) [ 26.632455][ T242] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.632619][ T242] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 26.632783][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.632949][ T242] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 26.633110][ T242] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 26.633269][ T242] ? 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) [ 26.633433][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.633567][ T242] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.633747][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.633912][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.634075][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.634238][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 26.634396][ T242] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 26.634557][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.634721][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.634883][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.635047][ T242] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 26.635217][ T242] do_sock_getsockopt (net/socket.c:2396) [ 26.635381][ T242] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 26.635562][ T242] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 26.635732][ T242] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 26.635859][ T242] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 26.636023][ T242] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 26.636189][ T242] ? __pfx_task_work_run (kernel/task_work.c:207) [ 26.636354][ T242] __x64_sys_getsockopt (net/socket.c:2432) [ 26.636516][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.636715][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.636885][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.637095][ T242] RIP: 0033:0x7f97a51a346e [ 26.637267][ T242] 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 [ 26.637834][ T242] RSP: 002b:00007f97a484e988 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 26.638079][ T242] RAX: ffffffffffffffda RBX: 00007f97a484ec60 RCX: 00007f97a51a346e [ 26.638326][ T242] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 26.638566][ T242] RBP: 00007f97a484e9a0 R08: 00007f97a484e99c R09: 0000000000000064 [ 26.638810][ T242] R10: 00007f97a484e9a0 R11: 0000000000000246 R12: 000000000000000a [ 26.639069][ T242] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064 | [ 26.645153][ T242] 1 lock held by connect-deny_ip/242: | [ 26.645317][ T242] #0: ffff888007a91098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 26.645648][ T242] | [ 26.645648][ T242] stack backtrace: [ 26.646133][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.646497][ T242] Call Trace: [ 26.646623][ T242] [ 26.646710][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 26.646877][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.647053][ T242] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 26.647221][ T242] tcp_ao_do_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222) [ 26.647386][ T242] tcp_connect (net/ipv4/tcp_output.c:4114) [ 26.647553][ T242] ? rt6_get_cookie (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/ip6_fib.h:312) [ 26.647729][ T242] tcp_v6_connect (net/ipv6/tcp_ipv6.c:333) [ 26.647903][ T242] ? __pfx_tcp_v6_connect (net/ipv6/tcp_ipv6.c:137) [ 26.648064][ T242] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 26.648226][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.648402][ T242] ? 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) [ 26.648570][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.648702][ T242] __inet_stream_connect (net/ipv4/af_inet.c:677) [ 26.648862][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.649065][ T242] inet_stream_connect (net/ipv4/af_inet.c:749) [ 26.649232][ T242] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 26.649398][ T242] ? __pfx___sys_connect (net/socket.c:2078) [ 26.649563][ T242] ? do_fcntl (fs/fcntl.c:473) [ 26.649699][ T242] ? __fget_files (fs/file.c:1009) [ 26.649877][ T242] __x64_sys_connect (net/socket.c:2095) [ 26.650045][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.650210][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.650419][ T242] RIP: 0033:0x7f97a51a340b [ 26.650591][ T242] 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 [ 26.651169][ T242] RSP: 002b:00007f97a484ead0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 26.651416][ T242] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f97a51a340b [ 26.651657][ T242] RDX: 000000000000001c RSI: 00007f97a484ec60 RDI: 000000000000000a [ 26.651905][ T242] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000414460 [ 26.652147][ T242] R10: 00007f97a505b598 R11: 0000000000000293 R12: 000000000040eb20 [ 26.652395][ T242] R13: 0000000000000001 R14: 00007f97a484ec60 R15: 00007f97a484ec60 | [ 34.744953][ T242] 1 lock held by connect-deny_ip/242: | [ 34.745106][ T242] #0: ffff888005267298 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 34.745389][ T242] | [ 34.745389][ T242] stack backtrace: [ 34.745876][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.746204][ T242] Call Trace: [ 34.746323][ T242] [ 34.746408][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 34.746569][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 34.746734][ T242] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 34.746890][ T242] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 34.747049][ T242] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 34.747239][ T242] ? 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) [ 34.747398][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 34.747519][ T242] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 34.747711][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 34.747900][ T242] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 34.748051][ T242] ? 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)) [ 34.748173][ T242] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 34.748335][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 34.748485][ T242] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 34.748642][ T242] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 34.748830][ T242] ? 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) [ 34.748982][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 34.749105][ T242] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) [ 34.749260][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 34.749450][ T242] __release_sock (net/core/sock.c:3079) [ 34.749606][ T242] release_sock (net/core/sock.c:3633) [ 34.749768][ T242] inet_stream_connect (net/ipv4/af_inet.c:751) [ 34.749924][ T242] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 34.750080][ T242] ? __pfx___sys_connect (net/socket.c:2078) [ 34.750229][ T242] ? do_fcntl (fs/fcntl.c:473) [ 34.750352][ T242] ? __fget_files (fs/file.c:1009) [ 34.750517][ T242] __x64_sys_connect (net/socket.c:2095) [ 34.750673][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 34.750828][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 34.751023][ T242] RIP: 0033:0x7f97a51a340b [ 34.751185][ T242] 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 [ 34.751715][ T242] RSP: 002b:00007f97a484ead0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 34.751950][ T242] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f97a51a340b [ 34.752180][ T242] RDX: 000000000000001c RSI: 00007f97a484ec60 RDI: 0000000000000009 [ 34.752408][ T242] RBP: 0000000000000009 R08: 0000000000000000 R09: 00000000ffffffff [ 34.752640][ T242] R10: 000000000040eb20 R11: 0000000000000293 R12: 000000000040eb20 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