====================================== | [ 1307.967396][ T8200] rcu_scheduler_active = 2, debug_locks = 1 | [ 1307.967634][ T8200] no locks held by smcrouted/8200. | [ 1307.967811][ T8200] | [ 1307.967811][ T8200] stack backtrace: [ 1307.968276][ T8200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1307.968480][ T8200] Call Trace: [ 1307.968610][ T8200] [ 1307.968697][ T8200] dump_stack_lvl (lib/dump_stack.c:123) [ 1307.968880][ T8200] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846) [ 1307.969055][ T8200] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [ 1307.969221][ T8200] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [ 1307.969446][ T8200] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [ 1307.969669][ T8200] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1307.969831][ T8200] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1307.969999][ T8200] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1307.970164][ T8200] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1307.970327][ T8200] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 1307.970487][ T8200] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1307.970661][ T8200] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1307.970825][ T8200] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [ 1307.970996][ T8200] ? validate_chain (kernel/locking/lockdep.c:3816 kernel/locking/lockdep.c:3872) [ 1307.971164][ T8200] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [ 1307.971335][ T8200] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1307.971498][ T8200] ? 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) [ 1307.971661][ T8200] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1307.971792][ T8200] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 1307.971977][ T8200] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1307.972211][ T8200] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1307.972466][ T8200] ? __create_object (mm/kmemleak.c:766) [ 1307.972710][ T8200] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 1307.972964][ T8200] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1307.973204][ T8200] ? 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) [ 1307.973397][ T8200] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1307.973526][ T8200] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1307.973765][ T8200] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1307.974005][ T8200] rawv6_setsockopt (net/ipv6/raw.c:1054) [ 1307.974260][ T8200] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [ 1307.974496][ T8200] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1307.974750][ T8200] ? kfree (mm/slub.c:4716) [ 1307.974951][ T8200] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1307.975215][ T8200] ? fd_install (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 fs/file.c:654) [ 1307.975468][ T8200] do_sock_setsockopt (net/socket.c:2313) [ 1307.975727][ T8200] ? __pfx_do_sock_setsockopt (net/socket.c:2282) [ 1307.976007][ T8200] __sys_setsockopt (net/socket.c:2338) [ 1307.976277][ T8200] __x64_sys_setsockopt (net/socket.c:2341) [ 1307.976543][ T8200] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 1307.976870][ T8200] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1307.977143][ T8200] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1307.977463][ T8200] RIP: 0033:0x7fcb8e80191e [ 1307.977742][ T8200] 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 [ 1307.978652][ T8200] RSP: 002b:00007ffe36bc4258 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1307.979027][ T8200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcb8e80191e [ 1307.979423][ T8200] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1307.979819][ T8200] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1307.980215][ T8200] R10: 00007ffe36bc427c R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt