Hello, syzbot found the following issue on: HEAD commit: d19cc4bf Merge tag 'trace-v5.12-rc5' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14898326d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=d1a3d65a48dbd1bc dashboard link: https://syzkaller.appspot.com/bug?extid=80a4f8091f8d5ba51de9 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+80a4f8091f8d5ba51de9@xxxxxxxxxxxxxxxxxxxxxxxxx ============================= WARNING: suspicious RCU usage 5.12.0-rc5-syzkaller #0 Not tainted ----------------------------- kernel/sched/core.c:8294 Illegal context switch in RCU-bh read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 0 no locks held by syz-executor.3/8407. stack backtrace: CPU: 0 PID: 8407 Comm: syz-executor.3 Not tainted 5.12.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ___might_sleep+0x229/0x2c0 kernel/sched/core.c:8294 lock_sock_nested+0x25/0x120 net/core/sock.c:3062 lock_sock include/net/sock.h:1600 [inline] do_ip_getsockopt+0x227/0x18e0 net/ipv4/ip_sockglue.c:1536 ip_getsockopt+0x84/0x1c0 net/ipv4/ip_sockglue.c:1761 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4239 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2161 __do_sys_getsockopt net/socket.c:2176 [inline] __se_sys_getsockopt net/socket.c:2173 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2173 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x467a6a Code: 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc76a6a848 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffc76a6a85c RCX: 0000000000467a6a RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffc76a6a85c R09: 00007ffc76a6a8c0 R10: 00007ffc76a6a860 R11: 0000000000000246 R12: 00007ffc76a6a860 R13: 000000000005ecdc R14: 0000000000000000 R15: 00007ffc76a6afd0 --- This report 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 syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
