Hello, syzbot found the following issue on: HEAD commit: 3950e975 Merge branch 'exec-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13be87cc900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c2b75627f23a2ff9 dashboard link: https://syzkaller.appspot.com/bug?extid=d99fcdc44745d2f54a57 compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d99fcdc44745d2f54a57@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1 at fs/eventpoll.c:688 ep_scan_ready_list+0x9f/0x470 fs/eventpoll.c:688 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 1 Comm: systemd Not tainted 5.8.0-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+0x16e/0x25d lib/dump_stack.c:118 panic+0x20c/0x69a kernel/panic.c:231 __warn+0x211/0x240 kernel/panic.c:600 report_bug+0x153/0x1d0 lib/bug.c:198 handle_bug+0x4d/0x90 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x70 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:547 RIP: 0010:ep_scan_ready_list+0x9f/0x470 fs/eventpoll.c:688 Code: 37 d4 c6 ff 85 db 74 1d e8 1e d0 c6 ff 40 84 ed 75 0c eb 1d e8 12 d0 c6 ff 40 84 ed 74 13 e8 08 d0 c6 ff eb 1c e8 01 d0 c6 ff <0f> 0b 40 84 ed 75 ed e8 f5 cf c6 ff 4c 89 f7 44 89 fe e8 1a 8b a5 RSP: 0000:ffffc90000c73dc8 EFLAGS: 00010293 RAX: ffffffff81853bff RBX: 0000000000000000 RCX: ffff88812b766040 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81853bd9 R09: 0000ffff88619eb7 R10: 0000ffffffffffff R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000c73de8 R14: ffff8881297af600 R15: 0000000000000000 ep_send_events fs/eventpoll.c:1788 [inline] ep_poll fs/eventpoll.c:1944 [inline] do_epoll_wait+0x55c/0x920 fs/eventpoll.c:2333 __do_sys_epoll_wait fs/eventpoll.c:2343 [inline] __se_sys_epoll_wait fs/eventpoll.c:2340 [inline] __x64_sys_epoll_wait+0x4d/0x60 fs/eventpoll.c:2340 do_syscall_64+0x6a/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f310b8db303 Code: 49 89 ca b8 e8 00 00 00 0f 05 48 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 49 89 ca b8 e8 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 51 c2 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffdc7ffa4c0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 000055e909e78f50 RCX: 00007f310b8db303 RDX: 0000000000000025 RSI: 00007ffdc7ffa4d0 RDI: 0000000000000004 RBP: 00007ffdc7ffa790 R08: 846474467368a395 R09: 00000000000061c0 R10: 00000000ffffffff R11: 0000000000000293 R12: 00007ffdc7ffa4d0 R13: 0000000000000001 R14: ffffffffffffffff R15: 0000000000000002 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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.
