[ 1891.042822][ T6488] [ 1891.042971][ T6488] ============================= [ 1891.043144][ T6488] WARNING: suspicious RCU usage [ 1891.043327][ T6488] 6.12.0-rc4-virtme #1 Not tainted [ 1891.044352][ T6488] ----------------------------- [ 1891.044649][ T6488] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!! [ 1891.044913][ T6488] [ 1891.044913][ T6488] other info that might help us debug this: [ 1891.044913][ T6488] [ 1891.045249][ T6488] [ 1891.045249][ T6488] rcu_scheduler_active = 2, debug_locks = 1 [ 1891.045591][ T6488] no locks held by smcrouted/6488. [ 1891.045797][ T6488] [ 1891.045797][ T6488] stack backtrace: [ 1891.046010][ T6488] CPU: 2 UID: 0 PID: 6488 Comm: smcrouted Not tainted 6.12.0-rc4-virtme #1 [ 1891.046336][ T6488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1891.046745][ T6488] Call Trace: [ 1891.046903][ T6488] [ 1891.047000][ T6488] dump_stack_lvl+0xb0/0xd0 [ 1891.047211][ T6488] lockdep_rcu_suspicious+0x1ea/0x280 [ 1891.047393][ T6488] ip6mr_get_table+0x142/0x190 [ 1891.047567][ T6488] ip6_mroute_setsockopt+0x185/0x12d0 [ 1891.047743][ T6488] ? __pfx_ip6_mroute_setsockopt+0x10/0x10 [ 1891.047971][ T6488] ? find_held_lock+0x2c/0x110 [ 1891.048147][ T6488] ? __lock_release+0x103/0x460 [ 1891.048314][ T6488] ? __might_fault+0x11b/0x170 [ 1891.048496][ T6488] ? __pfx___lock_release+0x10/0x10 [ 1891.048671][ T6488] ? trace_lock_acquire+0x14d/0x1f0 [ 1891.048850][ T6488] ? __might_fault+0xc3/0x170 [ 1891.049022][ T6488] ? lock_acquire+0x32/0xc0 [ 1891.049193][ T6488] ? __might_fault+0xc3/0x170 [ 1891.049360][ T6488] ? __might_fault+0x11b/0x170 [ 1891.049539][ T6488] do_ipv6_setsockopt+0x705/0x34e0 [ 1891.049717][ T6488] ? __lock_release+0xf0/0x460 [ 1891.049896][ T6488] ? __pfx_do_ipv6_setsockopt+0x10/0x10 [ 1891.050067][ T6488] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1891.050243][ T6488] ? rcu_read_lock_any_held+0x43/0xb0 [ 1891.050418][ T6488] ? validate_chain+0x1fe/0xae0 [ 1891.050590][ T6488] ? is_bpf_text_address+0x67/0x120 [ 1891.050768][ T6488] ? __pfx_validate_chain+0x10/0x10 [ 1891.050938][ T6488] ? hlock_class+0x4e/0x130 [ 1891.051107][ T6488] ? mark_lock+0x38/0x3e0 [ 1891.051241][ T6488] ? __lock_acquire+0xb3f/0x1580 [ 1891.051438][ T6488] ? find_held_lock+0x2c/0x110 [ 1891.051634][ T6488] ? ipv6_setsockopt+0x7f/0xe0 [ 1891.051826][ T6488] ipv6_setsockopt+0x7f/0xe0 [ 1891.052037][ T6488] rawv6_setsockopt+0xb7/0x550 [ 1891.052212][ T6488] ? __pfx_rawv6_setsockopt+0x10/0x10 [ 1891.052390][ T6488] ? __lock_acquire+0xb3f/0x1580 [ 1891.052568][ T6488] ? kfree+0x2d/0x340 [ 1891.052732][ T6488] do_sock_setsockopt+0x149/0x3a0 [ 1891.052908][ T6488] ? __pfx_do_sock_setsockopt+0x10/0x10 [ 1891.053106][ T6488] ? __lock_release+0x103/0x460 [ 1891.053289][ T6488] ? fd_install+0x1d1/0x5a0 [ 1891.053488][ T6488] ? trace_lock_acquire+0x14d/0x1f0 [ 1891.053675][ T6488] ? fdget+0x52/0x1e0 [ 1891.053834][ T6488] __sys_setsockopt+0x104/0x1a0 [ 1891.054014][ T6488] ? __pfx___sys_setsockopt+0x10/0x10 [ 1891.054207][ T6488] ? __sys_socket+0x168/0x1e0 [ 1891.054394][ T6488] ? __pfx___sys_socket+0x10/0x10 [ 1891.054571][ T6488] __x64_sys_setsockopt+0xbd/0x160 [ 1891.054760][ T6488] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1891.054979][ T6488] do_syscall_64+0xc1/0x1d0 [ 1891.055166][ T6488] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1891.055413][ T6488] RIP: 0033:0x7f6d96b1191e [ 1891.055596][ T6488] 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 [ 1891.056249][ T6488] RSP: 002b:00007fffa6812718 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1891.056532][ T6488] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6d96b1191e [ 1891.056791][ T6488] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1891.057045][ T6488] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1891.057305][ T6488] R10: 00007fffa681273c R11: 0000000000000246 R12: 0000000000000000 [ 1891.057558][ T6488] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f6d96c16000 [ 1891.057831][ T6488] [ 1891.065031][ T6488] veth0: entered allmulticast mode [ 1891.066103][ T6488] veth1: entered allmulticast mode [ 1891.066474][ T6488] veth2: entered allmulticast mode [ 1891.066812][ T6488] veth3: entered allmulticast mode [ 1891.067148][ T6488] veth4: entered allmulticast mode [ 1891.067505][ T6488] veth5: entered allmulticast mode [ 1937.771145][ T6488] veth0: left allmulticast mode [ 1937.771719][ T6488] veth1: left allmulticast mode [ 1937.771983][ T6488] veth2: left allmulticast mode [ 1937.772244][ T6488] veth3: left allmulticast mode [ 1937.772517][ T6488] veth4: left allmulticast mode [ 1937.772773][ T6488] veth5: left allmulticast mode