====================================== | [ 1281.224031][ T7518] rcu_scheduler_active = 2, debug_locks = 1 | [ 1281.224426][ T7518] no locks held by smcrouted/7518. | [ 1281.224747][ T7518] | [ 1281.224747][ T7518] stack backtrace: [ 1281.225478][ T7518] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1281.225793][ T7518] Call Trace: [ 1281.225992][ T7518] [ 1281.226133][ T7518] dump_stack_lvl (lib/dump_stack.c:123) [ 1281.226411][ T7518] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846) [ 1281.226663][ T7518] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [ 1281.226924][ T7518] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [ 1281.227689][ T7518] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [ 1281.228026][ T7518] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1281.228289][ T7518] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1281.228540][ T7518] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1281.228830][ T7518] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1281.229082][ T7518] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 1281.229340][ T7518] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1281.229596][ T7518] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 1281.229854][ T7518] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [ 1281.230110][ T7518] ? validate_chain (kernel/locking/lockdep.c:3816 kernel/locking/lockdep.c:3872) [ 1281.230369][ T7518] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [ 1281.230623][ T7518] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1281.230881][ T7518] ? 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) [ 1281.231128][ T7518] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1281.231333][ T7518] ? __lock_acquire (kernel/locking/lockdep.c:5226) [ 1281.231600][ T7518] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1281.231836][ T7518] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1281.232087][ T7518] ? __create_object (mm/kmemleak.c:766) [ 1281.232332][ T7518] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 1281.232575][ T7518] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 1281.232838][ T7518] ? 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) [ 1281.233086][ T7518] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 1281.233289][ T7518] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1281.233550][ T7518] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 1281.233810][ T7518] rawv6_setsockopt (net/ipv6/raw.c:1054) [ 1281.234071][ T7518] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [ 1281.234332][ T7518] ? find_held_lock (kernel/locking/lockdep.c:5339) [ 1281.234606][ T7518] ? kfree (mm/slub.c:4716) [ 1281.234798][ T7518] ? __lock_release (kernel/locking/lockdep.c:5525) [ 1281.235062][ T7518] ? fd_install (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 fs/file.c:654) [ 1281.235329][ T7518] do_sock_setsockopt (net/socket.c:2313) [ 1281.235584][ T7518] ? __pfx_do_sock_setsockopt (net/socket.c:2282) [ 1281.235858][ T7518] __sys_setsockopt (net/socket.c:2338) [ 1281.236119][ T7518] __x64_sys_setsockopt (net/socket.c:2341) [ 1281.236370][ T7518] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 1281.236689][ T7518] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1281.236949][ T7518] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1281.237267][ T7518] RIP: 0033:0x7fd47015191e [ 1281.237539][ T7518] 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 [ 1281.238398][ T7518] RSP: 002b:00007ffeae713238 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1281.238766][ T7518] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd47015191e [ 1281.239165][ T7518] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1281.239540][ T7518] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1281.239911][ T7518] R10: 00007ffeae71325c R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt