------------[ cut here ]------------ kernel BUG at fs/pipe.c:582! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9755 Comm: syz-executor.0 Not tainted 5.4.0-next-20191206-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 71 b2 b5 ff 41 83 ce 08 e8 68 b2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 51 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:ffffc9000204f698 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880a793ac00 RCX: ffffc90002089000 RDX: 0000000000040000 RSI: ffffffff81bf42bf RDI: 0000000000000004 RBP: ffffc9000204f6d0 R08: ffff888054b8e080 R09: ffff888054b8e918 R10: fffffbfff1501518 R11: ffffffff8a80a8c7 R12: ffff88809aa61ac0 R13: 00000000fffffffc R14: 0000000000000001 R15: 0000000000000ee5 FS: 00007f6f853a3700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32723000 CR3: 000000008ee5a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_poll include/linux/poll.h:90 [inline] do_select+0x922/0x16f0 fs/select.c:534 core_sys_select+0x444/0x9e0 fs/select.c:677 do_pselect.constprop.0+0x199/0x1e0 fs/select.c:759 __do_sys_pselect6 fs/select.c:784 [inline] __se_sys_pselect6 fs/select.c:769 [inline] __x64_sys_pselect6+0x1fc/0x2e0 fs/select.c:769 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a6f9 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:00007f6f853a2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000040 RBP: 000000000075bf20 R08: 0000000020000200 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 00007f6f853a36d4 R13: 00000000004c8a54 R14: 00000000004e0088 R15: 00000000ffffffff Modules linked in: ---[ end trace d4af6a5a1745f65c ]--- RIP: 0010:pipe_poll+0x37f/0x400 fs/pipe.c:582 Code: ff 85 db 75 09 e8 71 b2 b5 ff 41 83 ce 08 e8 68 b2 b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 51 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:ffffc9000204f698 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880a793ac00 RCX: ffffc90002089000 RDX: 0000000000040000 RSI: ffffffff81bf42bf RDI: 0000000000000004 RBP: ffffc9000204f6d0 R08: ffff888054b8e080 R09: ffff888054b8e918 R10: fffffbfff1501518 R11: ffffffff8a80a8c7 R12: ffff88809aa61ac0 R13: 00000000fffffffc R14: 0000000000000001 R15: 0000000000000ee5 FS: 00007f6f853a3700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f365fff4000 CR3: 000000008ee5a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400