====================================== | [ 1297.577042][ T9688] rcu_scheduler_active = 2, debug_locks = 1 | [ 1297.577272][ T9688] no locks held by smcrouted/9688. | [ 1297.577523][ T9688] | [ 1297.577523][ T9688] stack backtrace: [ 1297.577958][ T9688] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1297.578156][ T9688] Call Trace: [ 1297.578280][ T9688] [ 1297.578368][ T9688] dump_stack_lvl (lib/dump_stack.c:123) [ 1297.578542][ T9688] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846) [ 1297.578710][ T9688] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [ 1297.578876][ T9688] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [ 1297.579044][ T9688] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [ 1297.579253][ T9688] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1297.579414][ T9688] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1297.579575][ T9688] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1297.579768][ T9688] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1297.579926][ T9688] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 1297.580081][ T9688] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1297.580242][ T9688] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1297.580411][ T9688] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [ 1297.580572][ T9688] ? validate_chain (kernel/locking/lockdep.c:3816 kernel/locking/lockdep.c:3872) [ 1297.580732][ T9688] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [ 1297.580889][ T9688] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1297.581063][ T9688] ? 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) [ 1297.581230][ T9688] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1297.581355][ T9688] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 1297.581521][ T9688] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1297.581682][ T9688] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1297.581848][ T9688] ? __create_object (mm/kmemleak.c:766) [ 1297.582008][ T9688] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 1297.582168][ T9688] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1297.582330][ T9688] ? 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) [ 1297.582487][ T9688] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1297.582614][ T9688] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1297.582773][ T9688] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1297.582932][ T9688] rawv6_setsockopt (net/ipv6/raw.c:1054) [ 1297.583101][ T9688] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [ 1297.583265][ T9688] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1297.583457][ T9688] ? kfree (mm/slub.c:4716) [ 1297.583577][ T9688] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1297.583737][ T9688] ? fd_install (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 fs/file.c:654) [ 1297.583900][ T9688] do_sock_setsockopt (net/socket.c:2313) [ 1297.584061][ T9688] ? __pfx_do_sock_setsockopt (net/socket.c:2282) [ 1297.584239][ T9688] __sys_setsockopt (net/socket.c:2338) [ 1297.584405][ T9688] __x64_sys_setsockopt (net/socket.c:2341) [ 1297.584569][ T9688] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 1297.584767][ T9688] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1297.584942][ T9688] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1297.585140][ T9688] RIP: 0033:0x7f327673e91e [ 1297.585311][ T9688] 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 [ 1297.585863][ T9688] RSP: 002b:00007ffd861d58e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1297.586105][ T9688] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f327673e91e [ 1297.586342][ T9688] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1297.586577][ T9688] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1297.586814][ T9688] R10: 00007ffd861d590c R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt