Re: bin/51461: Processes hang when attempting to read from an empty file on psshfs mount

[Mateusz Poszwa <old4%o2.pl@localhost>]

The following reply was made to PR bin/51461; it has been noted by GNATS.

From: Mateusz Poszwa <old4%o2.pl@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/51461: Processes hang when attempting to read from an empty
 file on psshfs mount
Date: Sun, 4 Sep 2016 18:38:34 +0200

 Backtrace from mount_psshfs.core follows:
 
 Program terminated with signal SIGSEGV, Segmentation fault.
 #0  0x00007a1ac4f19f0f in memcpy () from /usr/lib/libc.so.12
 (gdb) bt
 #0  0x00007a1ac4f19f0f in memcpy () from /usr/lib/libc.so.12
 #1  0x00007a1ac560a406 in puffs_framebuf_putdata () from /usr/lib/libpuffs.so.2
 #2  0x00000000e100b195 in psbuf_put_data (pb=0x7a1ac5506070, data=0x0, dlen=4)
     at psbuf.c:248
 #3  0x00000000e100baf0 in psbuf_req_data (pb=0x7a1ac5506070, type=5, reqid=1027, 
     data=0x0, dlen=4) at psbuf.c:581
 #4  0x00000000e1009a66 in psshfs_node_read (pu=0x7a1ac550e800, opc=0x7a1ac550a900, 
     buf=0x7a1ac55790a4 "", offset=0, resid=0x7a1ac5579098, pcr=0x7a1ac5579038, 
     ioflag=0) at node.c:530
 #5  0x00007a1ac5608700 in ?? () from /usr/lib/libpuffs.so.2
 #6  0x00007a1ac560934d in puffs.ml_dispatch () from /usr/lib/libpuffs.so.2
 #7  0x00007a1ac560b366 in puffs.framev_input () from /usr/lib/libpuffs.so.2
 #8  0x00007a1ac560d001 in puffs.theloop () from /usr/lib/libpuffs.so.2
 #9  0x00007a1ac4e61fa0 in ?? () from /usr/lib/libc.so.12
 Backtrace stopped: Cannot access memory at address 0x7a1ac5940000
 
 
 -- 
 Mateusz Poszwa