------------[ cut here ]------------
kernel BUG at fs/pipe.c:582!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8906 Comm: syz-executor.5 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582
Code: ff 85 db 75 09 e8 11 d8 b5 ff 41 83 ce 08 e8 08 d8 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f1 d7 b5 ff <0f> 0b e8 4a 48 f3 ff e9 ed fc ff ff e8 40 48 f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc90001777a10 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888090c5f400 RCX: ffffc900152c9000
RDX: 0000000000040000 RSI: ffffffff81bf228f RDI: 0000000000000004
RBP: ffffc90001777a48 R08: ffff8880946e2300 R09: fffffbfff1615daf
R10: fffffbfff1615dae R11: ffffffff8b0aed77 R12: ffff8880902687c0
R13: 00000000fffffff1 R14: 0000000000000010 R15: 0000000000000e60
FS:  00007fea9d92c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0700643d90 CR3: 000000009ec88000 CR4: 00000000001406f0
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: 0033:0x45a679
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fea9d92bc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a679
RDX: 00000000000002bb RSI: 0000000020000100 RDI: 0000000000000005
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: fffffffffffffffb R11: 0000000000000246 R12: 00007fea9d92c6d4
R13: 00000000004c0fb9 R14: 00000000004d4d48 R15: 00000000ffffffff
Modules linked in:
---[ end trace c02a4fededb81797 ]---
RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582
Code: ff 85 db 75 09 e8 11 d8 b5 ff 41 83 ce 08 e8 08 d8 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f1 d7 b5 ff <0f> 0b e8 4a 48 f3 ff e9 ed fc ff ff e8 40 48 f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc90001777a10 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888090c5f400 RCX: ffffc900152c9000
RDX: 0000000000040000 RSI: ffffffff81bf228f RDI: 0000000000000004
RBP: ffffc90001777a48 R08: ffff8880946e2300 R09: fffffbfff1615daf
R10: fffffbfff1615dae R11: ffffffff8b0aed77 R12: ffff8880902687c0
R13: 00000000fffffff1 R14: 0000000000000010 R15: 0000000000000e60
FS:  00007fea9d92c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cb37000 CR3: 000000009ec88000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400