[ 340.860756][ T2669] [ 340.861043][ T2669] ============================= [ 340.861243][ T2669] WARNING: suspicious RCU usage [ 340.861418][ T2669] 6.14.0-rc6-virtme #1 Not tainted [ 340.861589][ T2669] ----------------------------- [ 340.861758][ T2669] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 340.862055][ T2669] [ 340.862055][ T2669] other info that might help us debug this: [ 340.862055][ T2669] [ 340.862381][ T2669] [ 340.862381][ T2669] rcu_scheduler_active = 2, debug_locks = 1 [ 340.862637][ T2669] 1 lock held by gro/2669: [ 340.863091][ T2669] #0: ffffffff9416f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 340.863413][ T2669] [ 340.863413][ T2669] stack backtrace: [ 340.863624][ T2669] CPU: 1 UID: 0 PID: 2669 Comm: gro Not tainted 6.14.0-rc6-virtme #1 [ 340.863628][ T2669] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 340.863631][ T2669] Call Trace: [ 340.863632][ T2669] [ 340.863634][ T2669] dump_stack_lvl+0xb0/0xd0 [ 340.863642][ T2669] lockdep_rcu_suspicious+0x1ea/0x280 [ 340.863653][ T2669] dev_hard_start_xmit+0x2fc/0x3f0 [ 340.863664][ T2669] __dev_queue_xmit+0xfaa/0x18d0 [ 340.863668][ T2669] ? _copy_from_iter+0x1d2/0x12e0 [ 340.863685][ T2669] ? __pfx___dev_queue_xmit+0x10/0x10 [ 340.863690][ T2669] ? packet_parse_headers+0x243/0x9d0 [ 340.863701][ T2669] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 340.863708][ T2669] ? __pfx_packet_parse_headers+0x10/0x10 [ 340.863712][ T2669] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 340.863719][ T2669] ? dev_get_by_index+0xb2/0x190 [ 340.863730][ T2669] packet_snd+0xd0d/0x19c0 [ 340.863742][ T2669] ? __lock_release+0x103/0x460 [ 340.863744][ T2669] ? __might_fault+0x11b/0x170 [ 340.863751][ T2669] ? __pfx_packet_snd+0x10/0x10 [ 340.863754][ T2669] ? trace_lock_acquire+0x14c/0x1f0 [ 340.863762][ T2669] ? lock_acquire+0x32/0xc0 [ 340.863768][ T2669] ? __might_fault+0x11b/0x170 [ 340.863779][ T2669] __sys_sendto+0x3c3/0x450 [ 340.863785][ T2669] ? __pfx___sys_sendto+0x10/0x10 [ 340.863799][ T2669] ? __lock_release+0x103/0x460 [ 340.863801][ T2669] ? do_user_addr_fault+0x972/0xe30 [ 340.863807][ T2669] ? __pfx___lock_release+0x10/0x10 [ 340.863814][ T2669] ? __pfx___up_read+0x10/0x10 [ 340.863821][ T2669] ? do_user_addr_fault+0x972/0xe30 [ 340.863829][ T2669] ? do_user_addr_fault+0x97c/0xe30 [ 340.863836][ T2669] __x64_sys_sendto+0xe0/0x1c0 [ 340.863841][ T2669] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 340.863845][ T2669] do_syscall_64+0xc1/0x1d0 [ 340.863852][ T2669] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 340.863857][ T2669] RIP: 0033:0x7facbcdeea4a [ 340.863861][ T2669] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 340.863864][ T2669] RSP: 002b:00007ffe169ff8e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 340.863867][ T2669] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007facbcdeea4a [ 340.863869][ T2669] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005 [ 340.863871][ T2669] RBP: 0000000000000064 R08: 00007ffe169ff950 R09: 0000000000000014 [ 340.863872][ T2669] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 340.863874][ T2669] R13: 00007ffe169ff950 R14: 0000000000000036 R15: 00007ffe16a009fd [ 340.863891][ T2669]