====================================== | [ 10.692064][ T279] rcu_scheduler_active = 2, debug_locks = 1 | [ 10.692304][ T279] no locks held by smcrouted/279. | [ 10.692482][ T279] | [ 10.692482][ T279] stack backtrace: [ 10.692950][ T279] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.693151][ T279] Call Trace: [ 10.693279][ T279] [ 10.693364][ T279] dump_stack_lvl (lib/dump_stack.c:123) [ 10.693536][ T279] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846) [ 10.693702][ T279] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [ 10.693867][ T279] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [ 10.694040][ T279] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [ 10.694266][ T279] ? __lock_release (kernel/locking/lockdep.c:5525) [ 10.694429][ T279] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 10.694599][ T279] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 10.694767][ T279] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 10.694934][ T279] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 10.695101][ T279] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 10.695267][ T279] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 10.695439][ T279] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [ 10.695606][ T279] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 10.695780][ T279] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [ 10.695945][ T279] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.696109][ T279] ? 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) [ 10.696269][ T279] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.696400][ T279] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.696574][ T279] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 10.696742][ T279] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 10.696911][ T279] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.697074][ T279] ? 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) [ 10.697241][ T279] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 10.697406][ T279] ? 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) [ 10.697569][ T279] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 10.697709][ T279] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 10.697875][ T279] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 10.698041][ T279] rawv6_setsockopt (net/ipv6/raw.c:1054) [ 10.698203][ T279] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [ 10.698367][ T279] ? kfree (mm/slub.c:4716) [ 10.698494][ T279] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 10.698660][ T279] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 10.698822][ T279] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 10.698985][ T279] do_sock_setsockopt (net/socket.c:2313) [ 10.699152][ T279] ? __pfx_do_sock_setsockopt (net/socket.c:2282) [ 10.699314][ T279] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 52)) [ 10.699484][ T279] ? rseq_update_cpu_node_id (kernel/rseq.c:109 (discriminator 10)) [ 10.699654][ T279] ? __rseq_handle_notify_resume (kernel/rseq.c:333) [ 10.699859][ T279] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 10.700070][ T279] __sys_setsockopt (net/socket.c:2338) [ 10.700244][ T279] __x64_sys_setsockopt (net/socket.c:2341) [ 10.700412][ T279] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 10.700620][ T279] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 10.700792][ T279] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 10.700993][ T279] RIP: 0033:0x7f7f3b2e591e [ 10.701175][ T279] Code: 0f 1f 40 00 48 8b 15 e1 94 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b1 0f 1f 00 f3 0f 1e fa 49 89 ca b8 36 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 a9 All code ======== 0: 0f 1f 40 00 nopl 0x0(%rax) 4: 48 8b 15 e1 94 0a 00 mov 0xa94e1(%rip),%rdx # 0xa94ec b: f7 d8 neg %eax d: 64 89 02 mov %eax,%fs:(%rdx) 10: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax 17: eb b1 jmp 0xffffffffffffffca 19: 0f 1f 00 nopl (%rax) 1c: f3 0f 1e fa endbr64 20: 49 89 ca mov %rcx,%r10 23: b8 36 00 00 00 mov $0x36,%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: a9 .byte 0xa9 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: a9 .byte 0xa9 [ 10.701736][ T279] RSP: 002b:00007ffecdb091a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 10.701988][ T279] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7f3b2e591e [ 10.702231][ T279] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 10.702471][ T279] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 10.702711][ T279] R10: 00007ffecdb091cc R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt