------------[ cut here ]------------
kernel BUG at fs/pipe.c:582!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 9583 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582
Code: ff 85 db 75 09 e8 d1 e2 b5 ff 41 83 ce 08 e8 c8 e2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b1 e2 b5 ff <0f> 0b e8 fa 4d f3 ff e9 ed fc ff ff e8 f0 4d f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc90001a1fa10 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88806c134800 RCX: ffffc900054a9000
RDX: 000000000001e92d RSI: ffffffff81bf188f RDI: 0000000000000004
RBP: ffffc90001a1fa48 R08: ffff888061b59380 R09: fffffbfff16181b1
R10: fffffbfff16181b0 R11: ffffffff8b0c0d87 R12: ffff8880619ddd00
R13: 00000000ffffffff R14: 0000000000000010 R15: 0000000000000401
FS:  00007f966e027700(0000) GS:ffff88802d400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203e0000 CR3: 000000005d59f000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_poll include/linux/poll.h:90 [inline]
 ep_item_poll.isra.0+0x15c/0x400 fs/eventpoll.c:892
 ep_send_events_proc+0x2a3/0xd70 fs/eventpoll.c:1749
 ep_scan_ready_list+0x305/0xb20 fs/eventpoll.c:704
 ep_send_events fs/eventpoll.c:1793 [inline]
 ep_poll+0x1f9/0xe60 fs/eventpoll.c:1930
 do_epoll_wait+0x210/0x260 fs/eventpoll.c:2294
 __do_sys_epoll_wait fs/eventpoll.c:2304 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2301 [inline]
 __x64_sys_epoll_wait+0x97/0xf0 fs/eventpoll.c:2301
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f966e026c88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 000000000072bfa8 RCX: 000000000045a759
RDX: 00000000000002bb RSI: 0000000020000100 RDI: 0000000000000005
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: fffffffffffffffb R11: 0000000000000246 R12: 00007f966e0276d4
R13: 00000000004a7fba R14: 00000000006e8fa8 R15: 00000000ffffffff
Modules linked in:
---[ end trace 3df4a6f0ff770a51 ]---
RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582
Code: ff 85 db 75 09 e8 d1 e2 b5 ff 41 83 ce 08 e8 c8 e2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b1 e2 b5 ff <0f> 0b e8 fa 4d f3 ff e9 ed fc ff ff e8 f0 4d f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc90001a1fa10 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88806c134800 RCX: ffffc900054a9000
RDX: 000000000001e92d RSI: ffffffff81bf188f RDI: 0000000000000004
RBP: ffffc90001a1fa48 R08: ffff888061b59380 R09: fffffbfff16181b1
R10: fffffbfff16181b0 R11: ffffffff8b0c0d87 R12: ffff8880619ddd00
R13: 00000000ffffffff R14: 0000000000000010 R15: 0000000000000401
FS:  00007f966e027700(0000) GS:ffff88802d200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8e6f5f070 CR3: 000000005d59f000 CR4: 0000000000340ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400