[ 11.252042][ T269] ip (269) used greatest stack depth: 24240 bytes left [ 11.343757][ T271] ip (271) used greatest stack depth: 24176 bytes left [ 11.891809][ T281] GACT probability NOT on [ 12.441451][ T290] [ 12.441748][ T290] ============================= [ 12.441949][ T290] WARNING: suspicious RCU usage [ 12.442254][ T290] 6.14.0-rc6-virtme #1 Not tainted [ 12.442441][ T290] ----------------------------- [ 12.442610][ T290] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 12.442893][ T290] [ 12.442893][ T290] other info that might help us debug this: [ 12.442893][ T290] [ 12.443227][ T290] [ 12.443227][ T290] rcu_scheduler_active = 2, debug_locks = 1 [ 12.443478][ T290] 1 lock held by mausezahn/290: [ 12.443656][ T290] #0: ffffffffa016f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 12.443967][ T290] [ 12.443967][ T290] stack backtrace: [ 12.444224][ T290] CPU: 0 UID: 0 PID: 290 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 12.444228][ T290] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.444231][ T290] Call Trace: [ 12.444232][ T290] [ 12.444235][ T290] dump_stack_lvl+0xb0/0xd0 [ 12.444245][ T290] lockdep_rcu_suspicious+0x1ea/0x280 [ 12.444258][ T290] dev_hard_start_xmit+0x2fc/0x3f0 [ 12.444270][ T290] __dev_queue_xmit+0xfaa/0x18d0 [ 12.444274][ T290] ? _copy_from_iter+0x1d2/0x12e0 [ 12.444293][ T290] ? __pfx___dev_queue_xmit+0x10/0x10 [ 12.444297][ T290] ? packet_parse_headers+0x243/0x9d0 [ 12.444309][ T290] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 12.444317][ T290] ? __pfx_packet_parse_headers+0x10/0x10 [ 12.444322][ T290] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 12.444329][ T290] ? dev_get_by_index+0xb2/0x190 [ 12.444340][ T290] packet_snd+0xd0d/0x19c0 [ 12.444352][ T290] ? __lock_release+0x103/0x460 [ 12.444355][ T290] ? __might_fault+0x11b/0x170 [ 12.444362][ T290] ? __pfx_packet_snd+0x10/0x10 [ 12.444365][ T290] ? trace_lock_acquire+0x14c/0x1f0 [ 12.444368][ T290] ? __might_fault+0x11b/0x170 [ 12.444375][ T290] ? lock_acquire+0x32/0xc0 [ 12.444380][ T290] ? __might_fault+0x11b/0x170 [ 12.444391][ T290] __sys_sendto+0x3c3/0x450 [ 12.444398][ T290] ? __pfx___sys_sendto+0x10/0x10 [ 12.444414][ T290] ? sock_ioctl+0x3b6/0x590 [ 12.444417][ T290] ? _copy_to_user+0x5c/0x80 [ 12.444424][ T290] ? __pfx_put_timespec64+0x10/0x10 [ 12.444432][ T290] ? posix_cpu_clock_get+0xe1/0x240 [ 12.444443][ T290] ? __x64_sys_clock_gettime+0x17a/0x200 [ 12.444448][ T290] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 12.444456][ T290] __x64_sys_sendto+0xe0/0x1c0 [ 12.444460][ T290] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 12.444465][ T290] do_syscall_64+0xc1/0x1d0 [ 12.444474][ T290] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 12.444480][ T290] RIP: 0033:0x7f08cb010a4a [ 12.444485][ T290] 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 [ 12.444488][ T290] RSP: 002b:00007ffc735e7798 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 12.444492][ T290] RAX: ffffffffffffffda RBX: 0000000039ebc9d0 RCX: 00007f08cb010a4a [ 12.444494][ T290] RDX: 0000000000000064 RSI: 0000000039ebc5c2 RDI: 0000000000000005 [ 12.444496][ T290] RBP: 0000000039ebc5c2 R08: 00007ffc735e77a0 R09: 0000000000000014 [ 12.444498][ T290] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 12.444499][ T290] R13: 0000000000000064 R14: 00007ffc735e77a0 R15: 0000000000000000 [ 12.444516][ T290]