------------[ cut here ]------------
kernel BUG at fs/pipe.c:582!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14501 Comm: syz-executor.2 Not tainted 5.4.0-next-20191205-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 b1 b2 b5 ff 41 83 ce 08 e8 a8 b2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 91 b2 b5 ff <0f> 0b e8 2a 55 f3 ff e9 ed fc ff ff e8 20 55 f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc9000fd9f8c8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880a2bd7400 RCX: ffffc9000e27a000
RDX: 0000000000040000 RSI: ffffffff81bf45df RDI: 0000000000000004
RBP: ffffc9000fd9f900 R08: ffff8880a256c080 R09: ffff8880a256c918
R10: fffffbfff15014f0 R11: ffffffff8a80a787 R12: ffff8880a691ca00
R13: 00000000ffffffff R14: 0000000000000001 R15: 0000000000000e27
FS:  00007f91ba2bf700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e00000 CR3: 00000000a6af8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_poll include/linux/poll.h:90 [inline]
 do_pollfd fs/select.c:859 [inline]
 do_poll fs/select.c:907 [inline]
 do_sys_poll+0x63c/0xdd0 fs/select.c:1001
 __do_sys_poll fs/select.c:1059 [inline]
 __se_sys_poll fs/select.c:1047 [inline]
 __x64_sys_poll+0x1a9/0x470 fs/select.c:1047
 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:00007f91ba2bec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000007
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 00000000200000c0
RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f91ba2bf6d4
R13: 00000000004c856f R14: 00000000004dfa60 R15: 00000000ffffffff
Modules linked in:
---[ end trace f962ad6a210ba00e ]---
RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582
Code: ff 85 db 75 09 e8 b1 b2 b5 ff 41 83 ce 08 e8 a8 b2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 91 b2 b5 ff <0f> 0b e8 2a 55 f3 ff e9 ed fc ff ff e8 20 55 f3 ff e9 b3 fd ff ff
RSP: 0018:ffffc9000fd9f8c8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880a2bd7400 RCX: ffffc9000e27a000
RDX: 0000000000040000 RSI: ffffffff81bf45df RDI: 0000000000000004
RBP: ffffc9000fd9f900 R08: ffff8880a256c080 R09: ffff8880a256c918
R10: fffffbfff15014f0 R11: ffffffff8a80a787 R12: ffff8880a691ca00
R13: 00000000ffffffff R14: 0000000000000001 R15: 0000000000000e27
FS:  00007f91ba2bf700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 00000000a6af8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400