====================================== | [ 11.237162][ T280] rcu_scheduler_active = 2, debug_locks = 1 | [ 11.237425][ T280] no locks held by smcrouted/280. | [ 11.237602][ T280] | [ 11.237602][ T280] stack backtrace: [ 11.238060][ T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.238266][ T280] Call Trace: [ 11.238397][ T280] [ 11.238486][ T280] dump_stack_lvl (lib/dump_stack.c:123) [ 11.238659][ T280] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 11.238839][ T280] ip6mr_get_table (net/ipv6/ip6mr.c:132 (discriminator 11)) [ 11.239007][ T280] ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1670) [ 11.239173][ T280] ? __pfx_ip6_mroute_setsockopt (net/ipv6/ip6mr.c:1658) [ 11.239378][ T280] ? __lock_release (kernel/locking/lockdep.c:5501) [ 11.239543][ T280] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 11.239707][ T280] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 11.239874][ T280] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 11.240030][ T280] ? lock_acquire (kernel/locking/lockdep.c:5798) [ 11.240188][ T280] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 11.240355][ T280] ? __might_fault (mm/memory.c:6716 mm/memory.c:6709) [ 11.240523][ T280] do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:415) [ 11.240691][ T280] ? __lock_release (kernel/locking/lockdep.c:5486) [ 11.240849][ T280] ? __pfx_do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:395) [ 11.241007][ T280] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 11.241167][ T280] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 11.241331][ T280] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 11.241500][ T280] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:769) [ 11.241669][ T280] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 11.241824][ T280] ? 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) [ 11.241985][ T280] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 11.242110][ T280] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 11.242279][ T280] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 11.242443][ T280] ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 11.242603][ T280] ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:996) [ 11.242762][ T280] rawv6_setsockopt (net/ipv6/raw.c:1054) [ 11.242922][ T280] ? __pfx_rawv6_setsockopt (net/ipv6/raw.c:1039) [ 11.243077][ T280] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 11.243236][ T280] ? kfree (mm/slub.c:4716) [ 11.243367][ T280] do_sock_setsockopt (net/socket.c:2336) [ 11.243533][ T280] ? __pfx_do_sock_setsockopt (net/socket.c:2305) [ 11.243689][ T280] ? __lock_release (kernel/locking/lockdep.c:5501) [ 11.243847][ T280] ? fd_install (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 fs/file.c:612) [ 11.244010][ T280] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 11.244171][ T280] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) [ 11.244293][ T280] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2361) [ 11.244455][ T280] ? __pfx___sys_setsockopt (net/socket.c:2349) [ 11.244612][ T280] ? __sys_socket (net/socket.c:496 net/socket.c:1727) [ 11.244773][ T280] ? __pfx___sys_socket (net/socket.c:1714) [ 11.244928][ T280] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 11.245088][ T280] __x64_sys_setsockopt (net/socket.c:2365) [ 11.245245][ T280] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 11.245446][ T280] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 11.245603][ T280] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 11.245797][ T280] RIP: 0033:0x7f53ce4c491e [ 11.245963][ T280] 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 [ 11.246514][ T280] RSP: 002b:00007ffd41c40a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 11.246758][ T280] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f53ce4c491e [ 11.247000][ T280] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 11.247240][ T280] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 11.247484][ T280] R10: 00007ffd41c40a9c R11: 0000000000000246 R12: 0000000000000000 Finger prints: lockdep_rcu_suspicious:ip6mr_get_table:ip6_mroute_setsockopt:do_ipv6_setsockopt:ipv6_setsockopt