Bug#423238: Memory leak in fuse
There seems to be a memory leak somewhere in fuse. To reproduce: % cp /usr/share/doc/libfuse-dev/examples/fusexmp.c . % (remove reference to config.h) % gcc -Wall `pkg-config fuse --cflags --libs` fusexmp.c -o fusexmp % mkdir test % ./fusexmp test % du -ms test % watch ps -C fusexmp -o pid,rss,cmd The resident size of fusexmp continues to grow. Not sure if fuse is caching something on purpose, or if this is a real leak. Yes, fuse is caching nodes and so a growing RSS is normal. You can check with valgrind, that that there's in fact no memory leak in this case. This isn't unique to fusexmp either. The fusexmp_fh example, and sshfs also do this. I did find one place where if fuse_do_getattr failed then memory wouldn't be freed, but this didn't fix my problem. --- fuse-2.6.3.orig/lib/fuse.c +++ fuse-2.6.3/lib/fuse.c @@ -682,10 +682,10 @@ break; res = fuse_do_getattr(f, req, newpath, buf); -if (res != 0) -break; free(newpath); newpath = NULL; +if (res != 0) +break; } while(--failctr); return newpath; This patch is definitely wrong. When we break out of the loop, the newpath needs to be set, and is actually freed in hide_node(). Freeing it within the loop would break the unlink while open semantics. Miklos -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#423238: Memory leak in fuse
Package: fuse Version: 2.6.3-4 Severity: normal There seems to be a memory leak somewhere in fuse. To reproduce: % cp /usr/share/doc/libfuse-dev/examples/fusexmp.c . % (remove reference to config.h) % gcc -Wall `pkg-config fuse --cflags --libs` fusexmp.c -o fusexmp % mkdir test % ./fusexmp test % du -ms test % watch ps -C fusexmp -o pid,rss,cmd The resident size of fusexmp continues to grow. Not sure if fuse is caching something on purpose, or if this is a real leak. This isn't unique to fusexmp either. The fusexmp_fh example, and sshfs also do this. I did find one place where if fuse_do_getattr failed then memory wouldn't be freed, but this didn't fix my problem. --- fuse-2.6.3.orig/lib/fuse.c +++ fuse-2.6.3/lib/fuse.c @@ -682,10 +682,10 @@ break; res = fuse_do_getattr(f, req, newpath, buf); -if (res != 0) -break; free(newpath); newpath = NULL; +if (res != 0) +break; } while(--failctr); return newpath; -- System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.20-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_CA, LC_CTYPE=en_CA (charmap=ISO-8859-1) Shell: /bin/sh linked to /bin/bash -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
