[ 131.073969][ T1350] [ 131.074221][ T1350] ============================= [ 131.074378][ T1350] WARNING: suspicious RCU usage [ 131.074532][ T1350] 6.14.0-rc6-virtme #1 Not tainted [ 131.074706][ T1350] ----------------------------- [ 131.074858][ T1350] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 131.075134][ T1350] [ 131.075134][ T1350] other info that might help us debug this: [ 131.075134][ T1350] [ 131.075426][ T1350] [ 131.075426][ T1350] rcu_scheduler_active = 2, debug_locks = 1 [ 131.075649][ T1350] 1 lock held by psock_snd/1350: [ 131.075807][ T1350] #0: ffffffffa316f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 131.076427][ T1350] [ 131.076427][ T1350] stack backtrace: [ 131.076615][ T1350] CPU: 1 UID: 0 PID: 1350 Comm: psock_snd Not tainted 6.14.0-rc6-virtme #1 [ 131.076619][ T1350] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 131.076622][ T1350] Call Trace: [ 131.076623][ T1350] [ 131.076625][ T1350] dump_stack_lvl+0xb0/0xd0 [ 131.076634][ T1350] lockdep_rcu_suspicious+0x1ea/0x280 [ 131.076645][ T1350] dev_hard_start_xmit+0x2fc/0x3f0 [ 131.076657][ T1350] __dev_queue_xmit+0xfaa/0x18d0 [ 131.076661][ T1350] ? _copy_from_iter+0x1d2/0x12e0 [ 131.076679][ T1350] ? __pfx___dev_queue_xmit+0x10/0x10 [ 131.076683][ T1350] ? packet_parse_headers+0x243/0x9d0 [ 131.076694][ T1350] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 131.076700][ T1350] ? __pfx_packet_parse_headers+0x10/0x10 [ 131.076705][ T1350] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 131.076712][ T1350] ? dev_get_by_index+0xb2/0x190 [ 131.076722][ T1350] packet_snd+0xd0d/0x19c0 [ 131.076735][ T1350] ? __lock_release+0x103/0x460 [ 131.076738][ T1350] ? __might_fault+0x11b/0x170 [ 131.076744][ T1350] ? __pfx_packet_snd+0x10/0x10 [ 131.076746][ T1350] ? trace_lock_acquire+0x14c/0x1f0 [ 131.076754][ T1350] ? lock_acquire+0x32/0xc0 [ 131.076760][ T1350] ? __might_fault+0x11b/0x170 [ 131.076771][ T1350] __sys_sendto+0x3c3/0x450 [ 131.076778][ T1350] ? __pfx___sys_sendto+0x10/0x10 [ 131.076781][ T1350] ? find_held_lock+0x2c/0x110 [ 131.076792][ T1350] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 131.076804][ T1350] ? __virt_addr_valid+0x22b/0x430 [ 131.076812][ T1350] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 131.076815][ T1350] ? trace_rcu_segcb_stats+0x36/0x1e0 [ 131.076824][ T1350] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 131.076827][ T1350] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 131.076835][ T1350] __x64_sys_sendto+0xe0/0x1c0 [ 131.076840][ T1350] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 131.076844][ T1350] do_syscall_64+0xc1/0x1d0 [ 131.076852][ T1350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 131.076856][ T1350] RIP: 0033:0x7f8ba829ca4a [ 131.076860][ T1350] 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 [ 131.076863][ T1350] RSP: 002b:00007ffeec359e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 131.076867][ T1350] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8ba829ca4a [ 131.076869][ T1350] RDX: 0000000000000080 RSI: 0000000000414138 RDI: 0000000000000007 [ 131.076871][ T1350] RBP: 0000000000000006 R08: 00007ffeec359e80 R09: 0000000000000014 [ 131.076873][ T1350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 131.076875][ T1350] R13: 0000000000000007 R14: 00007ffeec359e80 R15: 0000000000000080 [ 131.076891][ T1350] [ 147.751404][ C1] IPv4: Oversized IP packet from 172.17.0.2