Re: [fuse-devel] Seg. fault in fuse 2.4

[Franco B. <fr...@fu...>]

I forgot to mention that I was strace'ing unfsd at the same time I was
debugging the fs process, is this expected behaviour? 


On Fri, 2006-01-27 at 15:01 +0800, Franco Broi wrote:
> This is with the filesystem exported via unfs3.
> 
> Easily reproducible, fails every time just by running find on the
> client.
> 
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1217037392 (LWP 15804)]
> 0x00a93aa2 in pthread_mutex_lock () from /lib/libpthread.so.0
> (gdb) where
> #0  0x00a93aa2 in pthread_mutex_lock () from /lib/libpthread.so.0
> #1  0xb7f80abd in forget_node (f=0x4, nodeid=9840, nlookup=1) at
> fuse.c:359
> #2  0xb7f82a07 in reply_entry (req=0x80dc478, e=Variable "e" is not
> available.
> ) at fuse.c:559
> #3  0xb7f8305f in fuse_lookup (req=0x80dc478, parent=9786,
> name=0x8076ef8 "phase3_H.4") at fuse.c:601
> #4  0xb7f85540 in fuse_ll_process (data=0x804d670, buf=0x8076ed0 "3",
> len=51, ch=0xa8) at fuse_lowlevel.c:401
> #5  0xb7f86097 in fuse_session_process (se=0xa8, buf=0x8076ed0 "3",
> len=51, ch=0x8068ed0) at fuse_session.c:74
> #6  0xb7f845c9 in do_work (data=0x8068e70) at fuse_loop_mt.c:101
> #7  0x00a92b80 in start_thread () from /lib/libpthread.so.0
> #8  0x00914dee in clone () from /lib/libc.so.6
> 
> 
> Debug: sleeping function called from invalid context at
> include/linux/rwsem.h:43
> in_atomic():1, irqs_disabled():0
>  [<f8bb83a3>] request_end+0x7a/0xf9 [fuse]
>  [<f8bb92f2>] fuse_dev_writev+0x216/0x272 [fuse]
>  [<f8bb90dc>] fuse_dev_writev+0x0/0x272 [fuse]
>  [<c0160a83>] do_readv_writev+0x217/0x299
>  [<f8bb934e>] fuse_dev_write+0x0/0x24 [fuse]
>  [<c01403f0>] audit_syscall_entry+0x131/0x15f
>  [<c0160b90>] vfs_writev+0x3c/0x52
>  [<c0160c84>] sys_writev+0x41/0x9d
>  [<c0103845>] syscall_call+0x7/0xb
> 
> 
> 
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