lkml.org 
[lkml]   [2019]   [Dec]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/2] pipe: Fixes [ver #2]
On Thu, Dec 05, 2019 at 10:30:22PM +0000, David Howells wrote:
> David Howells (2):
> pipe: Remove assertion from pipe_poll()
> pipe: Fix missing mask update after pipe_wait()

For reference, I've retested current master (b0d4beaa5a4b7d), that
incldes the 2 pipe fixes, the test still hangs.

The stack now points to pipe_wait but otherwise seems to be the same:

[<0>] pipe_wait+0x72/0xc0
[<0>] pipe_write+0x217/0x4b0
[<0>] new_sync_write+0x11e/0x1c0
[<0>] vfs_write+0xc1/0x1d0
[<0>] kernel_write+0x2c/0x40
[<0>] send_cmd+0x78/0xf0 [btrfs]
[<0>] send_extent_data+0x4af/0x52a [btrfs]
[<0>] process_extent+0xe5d/0xeb4 [btrfs]
[<0>] changed_cb+0xcf5/0xd2f [btrfs]
[<0>] send_subvol+0x8af/0xc0d [btrfs]
[<0>] btrfs_ioctl_send+0xe2b/0xef0 [btrfs]
[<0>] _btrfs_ioctl_send+0x80/0x110 [btrfs]
[<0>] btrfs_ioctl+0x14b8/0x3120 [btrfs]
[<0>] do_vfs_ioctl+0xa1/0x750
[<0>] ksys_ioctl+0x70/0x80
[<0>] __x64_sys_ioctl+0x16/0x20
[<0>] do_syscall_64+0x56/0x240
[<0>] entry_SYSCALL_64_after_hwframe+0x49/0xbe

(gdb) l *(pipe_wait+0x72)
0x622 is in pipe_wait (fs/pipe.c:120).
115 * is considered a noninteractive wait:
116 */
117 prepare_to_wait(&pipe->wait, &wait, TASK_INTERRUPTIBLE);
118 pipe_unlock(pipe);
119 schedule();
120 finish_wait(&pipe->wait, &wait);
121 pipe_lock(pipe);
122 }
123
124 static void anon_pipe_buf_release(struct pipe_inode_info *pipe,

\
 
 \ /
  Last update: 2019-12-06 14:56    [W:0.100 / U:1.516 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site