lkml.org 
[lkml]   [2018]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[BUG] fs: nfs: callback_proc: a possible sleep-in-atomic-context bug in nfs4_callback_sequence()
Date
The kernel may sleep with holding a spinlock.

The function call paths (from bottom to top) in Linux-4.16 are:

[FUNC] schedule_timeout
fs/nfs/nfs4session.c, 223: schedule_timeout in nfs4_slot_wait_on_seqid
fs/nfs/callback_proc.c, 466: nfs4_slot_wait_on_seqid in
referring_call_exists
fs/nfs/callback_proc.c, 544: referring_call_exists in nfs4_callback_sequence
fs/nfs/callback_proc.c, 504: spin_lock in nfs4_callback_sequence

I do not find a good way to fix, so I only report.
This is found by my static analysis tool (DSAC).


Thanks,
Jia-Ju Bai

\
 
 \ /
  Last update: 2018-08-13 05:43    [W:0.015 / U:7.848 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site