====================================== | [ 1290.803509][T15950] rcu_scheduler_active = 2, debug_locks = 1 | [ 1290.803844][T15950] no locks held by smcrouted/15950. | [ 1290.804043][T15950] | [ 1290.804043][T15950] stack backtrace: [ 1290.804543][T15950] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1290.804766][T15950] Call Trace: [ 1290.804905][T15950] [1290.805001][T15950] dump_stack_lvl (lib/dump_stack.c:123) [1290.805189][T15950] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846) [1290.805370][T15950] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [1290.805540][T15950] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [1290.805700][T15950] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [1290.805916][T15950] ? __lock_release (kernel/locking/lockdep.c:5525) [1290.806081][T15950] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [1290.806252][T15950] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [1290.806423][T15950] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [1290.806590][T15950] ? lock_acquire (kernel/locking/lockdep.c:5822) [1290.806764][T15950] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [1290.806940][T15950] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [1290.807122][T15950] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [1290.807304][T15950] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [1290.807481][T15950] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [1290.807659][T15950] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [1290.807829][T15950] ? 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) [1290.808003][T15950] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [1290.808141][T15950] ? __lock_acquire (kernel/locking/lockdep.c:5226) [1290.808323][T15950] ? find_held_lock (kernel/locking/lockdep.c:5339) [1290.808498][T15950] ? __lock_release (kernel/locking/lockdep.c:5525) [1290.808669][T15950] ? __create_object (mm/kmemleak.c:766) [1290.808834][T15950] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [1290.809004][T15950] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [1290.809158][T15950] ? 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) [1290.809315][T15950] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [1290.809446][T15950] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [1290.809605][T15950] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [1290.809764][T15950] rawv6_setsockopt (net/ipv6/raw.c:1054) [1290.809936][T15950] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [1290.810099][T15950] ? find_held_lock (kernel/locking/lockdep.c:5339) [1290.810272][T15950] ? kfree (mm/slub.c:4716) [1290.810402][T15950] ? __lock_release (kernel/locking/lockdep.c:5525) [1290.810571][T15950] ? fd_install (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 fs/file.c:654) [1290.810737][T15950] do_sock_setsockopt (net/socket.c:2313) [1290.810896][T15950] ? __pfx_do_sock_setsockopt (net/socket.c:2282) [1290.811066][T15950] __sys_setsockopt (net/socket.c:2338) [1290.811244][T15950] __x64_sys_setsockopt (net/socket.c:2341) [1290.811409][T15950] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [1290.811622][T15950] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [1290.811801][T15950] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1290.811998][T15950] RIP: 0033:0x7fb4beaf891e [ 1290.812164][T15950] 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 [ 1290.812716][T15950] RSP: 002b:00007ffd4a107b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1290.812958][T15950] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb4beaf891e [ 1290.813197][T15950] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1290.813450][T15950] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1290.813683][T15950] R10: 00007ffd4a107bbc R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt