[ 658.357465][T10080] [ 658.357760][T10080] ============================= [ 658.358372][T10080] WARNING: suspicious RCU usage [ 658.358535][T10080] 6.14.0-rc6-virtme #1 Not tainted [ 658.358695][T10080] ----------------------------- [ 658.358855][T10080] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 658.359164][T10080] [ 658.359164][T10080] other info that might help us debug this: [ 658.359164][T10080] [ 658.359460][T10080] [ 658.359460][T10080] rcu_scheduler_active = 2, debug_locks = 1 [ 658.359684][T10080] 1 lock held by mausezahn/10080: [ 658.359839][T10080] #0: ffffffffa416f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 658.360158][T10080] [ 658.360158][T10080] stack backtrace: [ 658.360350][T10080] CPU: 3 UID: 0 PID: 10080 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 658.360354][T10080] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 658.360357][T10080] Call Trace: [ 658.360358][T10080] [ 658.360362][T10080] dump_stack_lvl+0xb0/0xd0 [ 658.360372][T10080] lockdep_rcu_suspicious+0x1ea/0x280 [ 658.360385][T10080] dev_hard_start_xmit+0x2fc/0x3f0 [ 658.360396][T10080] __dev_queue_xmit+0xfaa/0x18d0 [ 658.360401][T10080] ? _copy_from_iter+0x1d2/0x12e0 [ 658.360420][T10080] ? __pfx___dev_queue_xmit+0x10/0x10 [ 658.360426][T10080] ? packet_parse_headers+0x243/0x9d0 [ 658.360437][T10080] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 658.360445][T10080] ? __pfx_packet_parse_headers+0x10/0x10 [ 658.360450][T10080] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 658.360458][T10080] ? dev_get_by_index+0xb2/0x190 [ 658.360469][T10080] packet_snd+0xd0d/0x19c0 [ 658.360482][T10080] ? __lock_release+0x103/0x460 [ 658.360485][T10080] ? __might_fault+0x11b/0x170 [ 658.360492][T10080] ? __pfx_packet_snd+0x10/0x10 [ 658.360494][T10080] ? trace_lock_acquire+0x14c/0x1f0 [ 658.360498][T10080] ? __might_fault+0x11b/0x170 [ 658.360505][T10080] ? lock_acquire+0x32/0xc0 [ 658.360510][T10080] ? __might_fault+0x11b/0x170 [ 658.360522][T10080] __sys_sendto+0x3c3/0x450 [ 658.360529][T10080] ? __pfx___sys_sendto+0x10/0x10 [ 658.360545][T10080] ? sock_ioctl+0x3b6/0x590 [ 658.360548][T10080] ? _copy_to_user+0x5c/0x80 [ 658.360556][T10080] ? __pfx_put_timespec64+0x10/0x10 [ 658.360566][T10080] ? posix_cpu_clock_get+0xe1/0x240 [ 658.360576][T10080] ? __x64_sys_clock_gettime+0x17a/0x200 [ 658.360581][T10080] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 658.360589][T10080] __x64_sys_sendto+0xe0/0x1c0 [ 658.360593][T10080] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 658.360598][T10080] do_syscall_64+0xc1/0x1d0 [ 658.360607][T10080] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 658.360613][T10080] RIP: 0033:0x7f4d7d81ea4a [ 658.360617][T10080] 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 [ 658.360620][T10080] RSP: 002b:00007fff563827b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 658.360624][T10080] RAX: ffffffffffffffda RBX: 00000000131769d0 RCX: 00007f4d7d81ea4a [ 658.360626][T10080] RDX: 0000000000000064 RSI: 00000000131765c2 RDI: 0000000000000005 [ 658.360628][T10080] RBP: 00000000131765c2 R08: 00007fff563827c0 R09: 0000000000000014 [ 658.360630][T10080] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 658.360632][T10080] R13: 0000000000000064 R14: 00007fff563827c0 R15: 0000000000000000 [ 658.360649][T10080]