On Thu, Jun 30, 2022 at 08:26:22PM +0800, Zhengchao Shao wrote: > When kunpeng920 encryption driver is used to deencrypt and decrypt > packets during the softirq, it is not allowed to use mutex lock. The > kernel will report the following error: > > BUG: scheduling while atomic: swapper/57/0/0x00000300 > Call trace: > dump_backtrace+0x0/0x1e4 > show_stack+0x20/0x2c > dump_stack+0xd8/0x140 > __schedule_bug+0x68/0x80 > __schedule+0x728/0x840 > schedule+0x50/0xe0 > schedule_preempt_disabled+0x18/0x24 > __mutex_lock.constprop.0+0x594/0x5dc > __mutex_lock_slowpath+0x1c/0x30 > mutex_lock+0x50/0x60 > sec_request_init+0x8c/0x1a0 [hisi_sec2] > sec_process+0x28/0x1ac [hisi_sec2] > sec_skcipher_crypto+0xf4/0x1d4 [hisi_sec2] > sec_skcipher_encrypt+0x1c/0x30 [hisi_sec2] > crypto_skcipher_encrypt+0x2c/0x40 > crypto_authenc_encrypt+0xc8/0xfc [authenc] > crypto_aead_encrypt+0x2c/0x40 > echainiv_encrypt+0x144/0x1a0 [echainiv] > crypto_aead_encrypt+0x2c/0x40 > esp_output_tail+0x348/0x5c0 [esp4] > esp_output+0x120/0x19c [esp4] > xfrm_output_one+0x25c/0x4d4 > xfrm_output_resume+0x6c/0x1fc > xfrm_output+0xac/0x3c0 > xfrm4_output+0x64/0x130 > ip_build_and_send_pkt+0x158/0x20c > tcp_v4_send_synack+0xdc/0x1f0 > tcp_conn_request+0x7d0/0x994 > tcp_v4_conn_request+0x58/0x6c > tcp_v6_conn_request+0xf0/0x100 > tcp_rcv_state_process+0x1cc/0xd60 > tcp_v4_do_rcv+0x10c/0x250 > tcp_v4_rcv+0xfc4/0x10a4 > ip_protocol_deliver_rcu+0xf4/0x200 > ip_local_deliver_finish+0x58/0x70 > ip_local_deliver+0x68/0x120 > ip_sublist_rcv_finish+0x70/0x94 > ip_list_rcv_finish.constprop.0+0x17c/0x1d0 > ip_sublist_rcv+0x40/0xb0 > ip_list_rcv+0x140/0x1dc > __netif_receive_skb_list_core+0x154/0x28c > __netif_receive_skb_list+0x120/0x1a0 > netif_receive_skb_list_internal+0xe4/0x1f0 > napi_complete_done+0x70/0x1f0 > gro_cell_poll+0x9c/0xb0 > napi_poll+0xcc/0x264 > net_rx_action+0xd4/0x21c > __do_softirq+0x130/0x358 > irq_exit+0x11c/0x13c > __handle_domain_irq+0x88/0xf0 > gic_handle_irq+0x78/0x2c0 > el1_irq+0xb8/0x140 > arch_cpu_idle+0x18/0x40 > default_idle_call+0x5c/0x1c0 > cpuidle_idle_call+0x174/0x1b0 > do_idle+0xc8/0x160 > cpu_startup_entry+0x30/0x11c > secondary_start_kernel+0x158/0x1e4 > softirq: huh, entered softirq 3 NET_RX 0000000093774ee4 with > preempt_count 00000100, exited with fffffe00? > > V1: use spin_lock will cause soft lockup > > Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx> > --- > drivers/crypto/hisilicon/sec2/sec.h | 2 +- > drivers/crypto/hisilicon/sec2/sec_crypto.c | 20 ++++++++++---------- > 2 files changed, 11 insertions(+), 11 deletions(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
