Hello, syzbot found the following crash on:
HEAD commit: f4926d51 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=137a899b100000 kernel config: https://syzkaller.appspot.com/x/.config?x=dcc6334acae363d4 dashboard link: https://syzkaller.appspot.com/bug?extid=263f8c0d007dc09b2dda compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+263f8c0d007dc09b2...@syzkaller.appspotmail.com BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.1/23385 caller is tipc_aead_tfm_next net/tipc/crypto.c:402 [inline] caller is tipc_aead_encrypt net/tipc/crypto.c:639 [inline] caller is tipc_crypto_xmit+0x80a/0x2790 net/tipc/crypto.c:1605 CPU: 1 PID: 23385 Comm: syz-executor.1 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48 tipc_aead_tfm_next net/tipc/crypto.c:402 [inline] tipc_aead_encrypt net/tipc/crypto.c:639 [inline] tipc_crypto_xmit+0x80a/0x2790 net/tipc/crypto.c:1605 tipc_bearer_xmit_skb+0x180/0x3f0 net/tipc/bearer.c:523 tipc_enable_bearer+0xb1d/0xdc0 net/tipc/bearer.c:331 __tipc_nl_bearer_enable+0x2bf/0x390 net/tipc/bearer.c:995 tipc_nl_bearer_enable+0x1e/0x30 net/tipc/bearer.c:1003 genl_family_rcv_msg_doit net/netlink/genetlink.c:691 [inline] genl_family_rcv_msg net/netlink/genetlink.c:736 [inline] genl_rcv_msg+0x61d/0x9e0 net/netlink/genetlink.c:753 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469 genl_rcv+0x24/0x40 net/netlink/genetlink.c:764 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352 ___sys_sendmsg+0xf3/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb19 Code: Bad RIP value. RSP: 002b:00007fa3c4dc1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000501c40 RCX: 000000000045cb19 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a19 R14: 00000000004ccf82 R15: 00007fa3c4dc26d4 tipc: Enabled bearer <eth:vlan1>, priority 10 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkal...@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
