From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CE0CC433FE for ; Thu, 17 Nov 2022 09:44:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239814AbiKQJou (ORCPT ); Thu, 17 Nov 2022 04:44:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234797AbiKQJol (ORCPT ); Thu, 17 Nov 2022 04:44:41 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B129970A37 for ; Thu, 17 Nov 2022 01:44:36 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id n8-20020a6b4108000000b006de520dc5c9so631823ioa.19 for ; Thu, 17 Nov 2022 01:44:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=O1roJ9vgdIn1CFlxSBfJPQCcALI91L+yUdiC/k2B3U4=; b=YE6bCscOfcEzQuTixn/PBCwDuNgVgkpxMYSKol8ksFMOGoGapfBTPZ8s1brSgTDJim 24/p5X+F63NKI12B20vgnCD8YSaWe1svXzZlRbxAeQwImXb60h1KdzDysa2WNnfHdATu H/QscP/z40sKaPluHPnSaxv+GiUO+bPLDMSoZ3GRz+BRR5zWB6aQdCQTlpXz8mrr9VVt KiJO4+g4ur4Thb3R+5JdLt7f1wQUaMmPf0JxybkC5YGaAh9049odOKFOYr68e3cEjTux moR/E6QN25EQrAlZ+FMgaX6uPHSi0sPIIWL2LLrKlyOnAHm0aZj6GvDpiOD92BKgQPug vz6Q== X-Gm-Message-State: ANoB5pk/g4d1D12HpbwoANWqeXlU1oKgO6R6VTW+NoPAioysFN2tOZEe TmJOfwrJbvwi8VOX1Gyjc1d6VbTx34PDcAvVpv5Bv5l7hlVI X-Google-Smtp-Source: AA0mqf5xgiN5kGv8lEvzqNuPFFxNi+mgoHY+OfxSIp/vrAlRu759OO3msfSsmXBMzpCVNnEI1kyUGKXoCMaI2pgV4F8coF5cgSo8 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:4cd:b0:302:9269:f3d2 with SMTP id f13-20020a056e0204cd00b003029269f3d2mr838844ils.87.1668678276054; Thu, 17 Nov 2022 01:44:36 -0800 (PST) Date: Thu, 17 Nov 2022 01:44:36 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e38b6605eda76f98@google.com> Subject: [syzbot] possible deadlock in l2tp_tunnel_register From: syzbot To: davem@davemloft.net, edumazet@google.com, jakub@cloudflare.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tparkin@katalix.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 064bc7312bd0 netdevsim: Fix memory leak of nsim_dev->fa_co.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=16948779880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a33ac7bbc22a8c35 dashboard link: https://syzkaller.appspot.com/bug?extid=de987172bb74a381879b compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0634e1c0e4cb/disk-064bc731.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fe1039d2de22/vmlinux-064bc731.xz kernel image: https://storage.googleapis.com/syzbot-assets/5a0d673875fa/bzImage-064bc731.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+de987172bb74a381879b@syzkaller.appspotmail.com ======================================================== WARNING: possible irq lock inversion dependency detected 6.1.0-rc4-syzkaller-00212-g064bc7312bd0 #0 Not tainted -------------------------------------------------------- syz-executor.0/4763 just changed the state of lock: ffff8880785323b8 (clock-AF_INET6){+++.}-{2:2}, at: l2tp_tunnel_register+0x126/0x1210 net/l2tp/l2tp_core.c:1477 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&tcp_hashinfo.bhash[i].lock){+.-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(clock-AF_INET6); local_irq_disable(); lock(&tcp_hashinfo.bhash[i].lock); lock(clock-AF_INET6); lock(&tcp_hashinfo.bhash[i].lock); *** DEADLOCK *** 1 lock held by syz-executor.0/4763: #0: ffff88807d11e130 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline] #0: ffff88807d11e130 (sk_lock-AF_PPPOX){+.+.}-{0:0}, at: pppol2tp_connect+0xadc/0x1a10 net/l2tp/l2tp_ppp.c:675 the shortest dependencies between 2nd lock and 1st lock: -> (&tcp_hashinfo.bhash[i].lock){+.-.}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] inet_csk_get_port+0x66a/0x2640 net/ipv4/inet_connection_sock.c:496 __inet6_bind+0x625/0x1b20 net/ipv6/af_inet6.c:412 inet6_bind+0x177/0x220 net/ipv6/af_inet6.c:471 rds_tcp_listen_init+0x2a9/0x4e0 net/rds/tcp_listen.c:307 rds_tcp_init_net+0x21d/0x4f0 net/rds/tcp.c:573 ops_init+0xb9/0x680 net/core/net_namespace.c:135 __register_pernet_operations net/core/net_namespace.c:1153 [inline] register_pernet_operations+0x35a/0x850 net/core/net_namespace.c:1222 register_pernet_device+0x2a/0x80 net/core/net_namespace.c:1309 rds_tcp_init+0x65/0xd3 net/rds/tcp.c:731 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] __inet_inherit_port+0x297/0x14e0 net/ipv4/inet_hashtables.c:229 tcp_v4_syn_recv_sock+0xb5b/0x14c0 net/ipv4/tcp_ipv4.c:1588 tcp_check_req+0x632/0x1aa0 net/ipv4/tcp_minisocks.c:786 tcp_v4_rcv+0x24b4/0x3980 net/ipv4/tcp_ipv4.c:2030 ip_protocol_deliver_rcu+0x9f/0x7c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:455 [inline] ip_sublist_rcv_finish+0x9a/0x2c0 net/ipv4/ip_input.c:575 ip_list_rcv_finish net/ipv4/ip_input.c:625 [inline] ip_sublist_rcv+0x533/0x980 net/ipv4/ip_input.c:633 ip_list_rcv+0x31e/0x470 net/ipv4/ip_input.c:668 __netif_receive_skb_list_ptype net/core/dev.c:5532 [inline] __netif_receive_skb_list_core+0x548/0x8f0 net/core/dev.c:5580 __netif_receive_skb_list net/core/dev.c:5632 [inline] netif_receive_skb_list_internal+0x75f/0xd90 net/core/dev.c:5723 gro_normal_list include/net/gro.h:433 [inline] gro_normal_list include/net/gro.h:429 [inline] napi_complete_done+0x1f5/0x890 net/core/dev.c:6064 virtqueue_napi_complete drivers/net/virtio_net.c:401 [inline] virtnet_poll+0xd08/0x1300 drivers/net/virtio_net.c:1678 __napi_poll+0xb8/0x770 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6676 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 common_interrupt+0xad/0xd0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:640 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:572 acpi_idle_enter+0x368/0x510 drivers/acpi/processor_idle.c:709 cpuidle_enter_state+0x1af/0xd40 drivers/cpuidle/cpuidle.c:239 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:356 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3f7/0x590 kernel/sched/idle.c:303 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400 start_secondary+0x256/0x300 arch/x86/kernel/smpboot.c:262 secondary_startup_64_no_verify+0xce/0xdb INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] inet_csk_get_port+0x66a/0x2640 net/ipv4/inet_connection_sock.c:496 __inet6_bind+0x625/0x1b20 net/ipv6/af_inet6.c:412 inet6_bind+0x177/0x220 net/ipv6/af_inet6.c:471 rds_tcp_listen_init+0x2a9/0x4e0 net/rds/tcp_listen.c:307 rds_tcp_init_net+0x21d/0x4f0 net/rds/tcp.c:573 ops_init+0xb9/0x680 net/core/net_namespace.c:135 __register_pernet_operations net/core/net_namespace.c:1153 [inline] register_pernet_operations+0x35a/0x850 net/core/net_namespace.c:1222 register_pernet_device+0x2a/0x80 net/core/net_namespace.c:1309 rds_tcp_init+0x65/0xd3 net/rds/tcp.c:731 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 } ... key at: [] __key.1+0x0/0x40 ... acquired at: __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline] _raw_read_lock_bh+0x3f/0x70 kernel/locking/spinlock.c:252 sock_i_uid+0x1f/0xb0 net/core/sock.c:2542 sk_reuseport_match net/ipv4/inet_connection_sock.c:383 [inline] inet_csk_get_port+0x869/0x2640 net/ipv4/inet_connection_sock.c:514 __inet6_bind+0x625/0x1b20 net/ipv6/af_inet6.c:412 inet6_bind+0x177/0x220 net/ipv6/af_inet6.c:471 __sys_bind+0x1ed/0x260 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (clock-AF_INET6){+++.}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x33/0x40 kernel/locking/spinlock.c:334 sock_orphan include/net/sock.h:2090 [inline] sk_common_release+0xc6/0x390 net/core/sock.c:3672 inet_release+0x132/0x270 net/ipv4/af_inet.c:428 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:488 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x1c/0x20 net/socket.c:1365 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline] _raw_read_lock_bh+0x3f/0x70 kernel/locking/spinlock.c:252 sock_i_uid+0x1f/0xb0 net/core/sock.c:2542 udp_lib_lport_inuse+0x32/0x490 net/ipv4/udp.c:140 udp_lib_get_port+0x835/0x18c0 net/ipv4/udp.c:306 __inet6_bind+0x625/0x1b20 net/ipv6/af_inet6.c:412 inet6_bind+0x177/0x220 net/ipv6/af_inet6.c:471 __sys_bind+0x1ed/0x260 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd SOFTIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 l2tp_tunnel_register+0x126/0x1210 net/l2tp/l2tp_core.c:1477 pppol2tp_connect+0xcdc/0x1a10 net/l2tp/l2tp_ppp.c:723 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x33/0x40 kernel/locking/spinlock.c:334 sock_orphan include/net/sock.h:2090 [inline] sk_common_release+0xc6/0x390 net/core/sock.c:3672 inet_release+0x132/0x270 net/ipv4/af_inet.c:428 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:488 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x1c/0x20 net/socket.c:1365 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline] _raw_read_lock_bh+0x3f/0x70 kernel/locking/spinlock.c:252 sock_i_uid+0x1f/0xb0 net/core/sock.c:2542 udp_lib_lport_inuse+0x32/0x490 net/ipv4/udp.c:140 udp_lib_get_port+0x835/0x18c0 net/ipv4/udp.c:306 __inet6_bind+0x625/0x1b20 net/ipv6/af_inet6.c:412 inet6_bind+0x177/0x220 net/ipv6/af_inet6.c:471 __sys_bind+0x1ed/0x260 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] af_callback_keys+0xa0/0x300 ... acquired at: mark_lock kernel/locking/lockdep.c:4598 [inline] mark_usage kernel/locking/lockdep.c:4547 [inline] __lock_acquire+0x893/0x56d0 kernel/locking/lockdep.c:5009 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 l2tp_tunnel_register+0x126/0x1210 net/l2tp/l2tp_core.c:1477 pppol2tp_connect+0xcdc/0x1a10 net/l2tp/l2tp_ppp.c:723 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 1 PID: 4763 Comm: syz-executor.0 Not tainted 6.1.0-rc4-syzkaller-00212-g064bc7312bd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_irq_inversion_bug kernel/locking/lockdep.c:222 [inline] check_usage_backwards kernel/locking/lockdep.c:4105 [inline] mark_lock_irq kernel/locking/lockdep.c:4198 [inline] mark_lock.part.0.cold+0x61/0xd8 kernel/locking/lockdep.c:4634 mark_lock kernel/locking/lockdep.c:4598 [inline] mark_usage kernel/locking/lockdep.c:4547 [inline] __lock_acquire+0x893/0x56d0 kernel/locking/lockdep.c:5009 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 l2tp_tunnel_register+0x126/0x1210 net/l2tp/l2tp_core.c:1477 pppol2tp_connect+0xcdc/0x1a10 net/l2tp/l2tp_ppp.c:723 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6ed8e8b639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6ed9c29168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f6ed8fabf80 RCX: 00007f6ed8e8b639 RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f6ed8ee6ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc86db2b3f R14: 00007f6ed9c29300 R15: 0000000000022000 BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4763, name: syz-executor.0 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 4763 Comm: syz-executor.0 Not tainted 6.1.0-rc4-syzkaller-00212-g064bc7312bd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9890 percpu_down_read include/linux/percpu-rwsem.h:49 [inline] cpus_read_lock+0x1b/0x140 kernel/cpu.c:310 static_key_slow_inc+0x12/0x20 kernel/jump_label.c:158 udp_tunnel_encap_enable include/net/udp_tunnel.h:187 [inline] setup_udp_tunnel_sock+0x43d/0x550 net/ipv4/udp_tunnel_core.c:81 l2tp_tunnel_register+0xc51/0x1210 net/l2tp/l2tp_core.c:1509 pppol2tp_connect+0xcdc/0x1a10 net/l2tp/l2tp_ppp.c:723 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6ed8e8b639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6ed9c29168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f6ed8fabf80 RCX: 00007f6ed8e8b639 RDX: 000000000000002e RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f6ed8ee6ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc86db2b3f R14: 00007f6ed9c29300 R15: 0000000000022000 --- This report is generated by a bot. 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