[ 1904.428780][ T6508] [ 1904.428902][ T6508] ============================= [ 1904.429060][ T6508] WARNING: suspicious RCU usage [ 1904.429220][ T6508] 6.12.0-rc6-virtme #1 Not tainted [ 1904.429384][ T6508] ----------------------------- [ 1904.429533][ T6508] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!! [ 1904.429769][ T6508] [ 1904.429769][ T6508] other info that might help us debug this: [ 1904.429769][ T6508] [ 1904.430098][ T6508] [ 1904.430098][ T6508] rcu_scheduler_active = 2, debug_locks = 1 [ 1904.430328][ T6508] no locks held by smcrouted/6508. [ 1904.430483][ T6508] [ 1904.430483][ T6508] stack backtrace: [ 1904.430777][ T6508] CPU: 0 UID: 0 PID: 6508 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1 [ 1904.431041][ T6508] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1904.431382][ T6508] Call Trace: [ 1904.431508][ T6508] [ 1904.431599][ T6508] dump_stack_lvl+0xb0/0xd0 [ 1904.431768][ T6508] lockdep_rcu_suspicious+0x1ea/0x280 [ 1904.431932][ T6508] ip6mr_get_table+0x142/0x190 [ 1904.432091][ T6508] ip6_mroute_setsockopt+0x185/0x12d0 [ 1904.432250][ T6508] ? __pfx_ip6_mroute_setsockopt+0x10/0x10 [ 1904.432448][ T6508] ? __lock_release+0x103/0x460 [ 1904.432603][ T6508] ? __might_fault+0x11b/0x170 [ 1904.432759][ T6508] ? trace_lock_acquire+0x14d/0x1f0 [ 1904.432919][ T6508] ? __might_fault+0xc3/0x170 [ 1904.433077][ T6508] ? lock_acquire+0x32/0xc0 [ 1904.433227][ T6508] ? __might_fault+0xc3/0x170 [ 1904.433383][ T6508] ? __might_fault+0x11b/0x170 [ 1904.433540][ T6508] do_ipv6_setsockopt+0x705/0x34e0 [ 1904.433692][ T6508] ? __lock_release+0xe0/0x460 [ 1904.433880][ T6508] ? __pfx_do_ipv6_setsockopt+0x10/0x10 [ 1904.434040][ T6508] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1904.434193][ T6508] ? rcu_read_lock_any_held+0x43/0xb0 [ 1904.434342][ T6508] ? validate_chain+0x1fe/0xae0 [ 1904.434491][ T6508] ? is_bpf_text_address+0x67/0x120 [ 1904.434669][ T6508] ? __pfx_validate_chain+0x10/0x10 [ 1904.434817][ T6508] ? hlock_class+0x4e/0x130 [ 1904.434970][ T6508] ? mark_lock+0x38/0x3e0 [ 1904.435096][ T6508] ? __lock_acquire+0xb3f/0x1580 [ 1904.435253][ T6508] ? find_held_lock+0x2c/0x110 [ 1904.435414][ T6508] ? ipv6_setsockopt+0x7f/0xe0 [ 1904.435570][ T6508] ipv6_setsockopt+0x7f/0xe0 [ 1904.435731][ T6508] rawv6_setsockopt+0xb7/0x550 [ 1904.435897][ T6508] ? __pfx_rawv6_setsockopt+0x10/0x10 [ 1904.436065][ T6508] ? __lock_acquire+0xb3f/0x1580 [ 1904.436229][ T6508] ? kfree+0x2d/0x340 [ 1904.436363][ T6508] do_sock_setsockopt+0x149/0x3a0 [ 1904.436522][ T6508] ? __pfx_do_sock_setsockopt+0x10/0x10 [ 1904.436681][ T6508] ? __lock_release+0x103/0x460 [ 1904.436848][ T6508] ? fd_install+0x1d1/0x5a0 [ 1904.437013][ T6508] ? trace_lock_acquire+0x14d/0x1f0 [ 1904.437165][ T6508] ? fdget+0x52/0x1e0 [ 1904.437294][ T6508] __sys_setsockopt+0x104/0x1a0 [ 1904.437655][ T6508] ? __pfx___sys_setsockopt+0x10/0x10 [ 1904.437849][ T6508] ? __sys_socket+0x168/0x1e0 [ 1904.438016][ T6508] ? __pfx___sys_socket+0x10/0x10 [ 1904.438180][ T6508] __x64_sys_setsockopt+0xbd/0x160 [ 1904.438341][ T6508] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1904.438543][ T6508] do_syscall_64+0xc1/0x1d0 [ 1904.438808][ T6508] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1904.439006][ T6508] RIP: 0033:0x7f0b3043791e [ 1904.439185][ T6508] 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 [ 1904.439852][ T6508] RSP: 002b:00007ffdae3eb2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 1904.440101][ T6508] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0b3043791e [ 1904.440345][ T6508] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008 [ 1904.440591][ T6508] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000 [ 1904.441003][ T6508] R10: 00007ffdae3eb31c R11: 0000000000000246 R12: 0000000000000000 [ 1904.441246][ T6508] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f0b3053c000 [ 1904.441593][ T6508] [ 1904.449917][ T6508] veth0: entered allmulticast mode [ 1904.452020][ T6508] veth1: entered allmulticast mode [ 1904.452408][ T6508] veth2: entered allmulticast mode [ 1904.452751][ T6508] veth3: entered allmulticast mode [ 1904.453088][ T6508] veth4: entered allmulticast mode [ 1904.453406][ T6508] veth5: entered allmulticast mode [ 1950.359982][ T6508] veth0: left allmulticast mode [ 1950.360280][ T6508] veth1: left allmulticast mode [ 1950.360512][ T6508] veth2: left allmulticast mode [ 1950.361025][ T6508] veth3: left allmulticast mode [ 1950.361278][ T6508] veth4: left allmulticast mode [ 1950.361505][ T6508] veth5: left allmulticast mode