Hi, On Sat, Sep 08, 2001 at 02:54:49AM +0200, Jochen Eisinger wrote: > The problem here is, my net backend just doesn't crash, no matter what i > do :(
CVS-versions of net.c and sanei_wire.c: Tested with scanimage -T, pnm over localhost. Small files: no problem. Big files (15 MB in this case): [...] [net] sane_read: next record length=8188 bytes [net] sane_read: max_length = 32768 [net] sane_read: next record length=7772 bytes [net] sane_read: max_length = 32768 [net] sane_read: next record length=-1 bytes [net] sane_cancel [net] sane_close: handle 0x8051c00 scanimage: stopping scanner... (sig 13) [net] sane_cancel scanimage: stopping scanner... (sig 13) [net] sane_cancel [...] Same with SANE 1.0.5. With xsane, sometimes it works, sometimes I get [1]+ Datenübergabe unterbrochen (broken pipe) xsane Now with your changes to net.c and sanei_wire.c: Same symptoms. Here is part of the debug log: [...] [net] sane_cloase: net_close [sanei_wire] sanei_w_call: wire 3 (old status 0) [sanei_wire] sanei_w_set_dir: wire 3, dir 0 [sanei_wire] flush: wire 3 [sanei_wire] flush: wire flushed [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 0 [sanei_wire] sanei_w_space: sending 0 bytes [sanei_wire] sanei_w_space: free buffer is now 8192 [sanei_wire] sanei_w_read: done [sanei_wire] flush: wire flushed [sanei_wire] sanei_w_set_dir: buffers flushed, direction changed [sanei_wire] sanei_w_call: sending request [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 3 [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 0 [sanei_wire] sanei_w_call: receiving reply [sanei_wire] sanei_w_set_dir: wire 3, dir 1 [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 8184 [sanei_wire] sanei_w_space: sending 8 bytes scanimage: stopping scanner... (sig 13) [net] sane_cancel [sanei_wire] sanei_w_call: wire 3 (old status 0) [sanei_wire] sanei_w_set_dir: wire 3, dir 0 [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 8192 [sanei_wire] sanei_w_space: sending 0 bytes [sanei_wire] sanei_w_space: free buffer is now 8192 [sanei_wire] sanei_w_read: done [sanei_wire] flush: wire flushed [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 8192 [sanei_wire] sanei_w_space: sending 0 bytes [sanei_wire] sanei_w_space: free buffer is now 8192 [sanei_wire] sanei_w_read: done [sanei_wire] flush: wire flushed [sanei_wire] sanei_w_set_dir: buffers flushed, direction changed [sanei_wire] sanei_w_call: sending request [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 8 [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 0 [sanei_wire] sanei_w_call: receiving reply [sanei_wire] sanei_w_set_dir: wire 3, dir 1 [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 8184 [sanei_wire] sanei_w_space: sending 8 bytes [sanei_wire] sanei_w_space: write failed (32) [sanei_wire] flush: error status 32 [sanei_wire] flush: wire flushed [sanei_wire] flush: wire 3 [sanei_wire] flush: error status 32 [sanei_wire] flush: wire flushed [sanei_wire] sanei_w_set_dir: buffers flushed, direction changed [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_space: wire is in invalid state 32 [sanei_wire] sanei_w_word: value = 8 [sanei_wire] sanei_w_call: error status 32 [net] do_cancel: 0x8051c00 scanimage: stopping scanner... (sig 13) [net] sane_cancel [sanei_wire] sanei_w_call: wire 3 (old status 32) [sanei_wire] sanei_w_set_dir: wire 3, dir 0 [sanei_wire] flush: wire 3 [sanei_wire] flush: wire flushed [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 0 [sanei_wire] sanei_w_space: sending 0 bytes [sanei_wire] sanei_w_space: free buffer is now 8192 [sanei_wire] sanei_w_read: done [sanei_wire] flush: wire flushed [sanei_wire] sanei_w_set_dir: buffers flushed, direction changed [sanei_wire] sanei_w_call: sending request [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 8 [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_read: done [sanei_wire] sanei_w_word: value = 0 [sanei_wire] sanei_w_call: receiving reply [sanei_wire] sanei_w_set_dir: wire 3, dir 1 [sanei_wire] flush: wire 3 [sanei_wire] sanei_w_space: 8193 bytes for wire 3 [sanei_wire] sanei_w_space: this won't fit in the buffer anyways :( ... could be flush() though [sanei_wire] sanei_w_space: free buffer size is 8184 [sanei_wire] sanei_w_space: sending 8 bytes [sanei_wire] sanei_w_space: write failed (32) [sanei_wire] flush: error status 32 [sanei_wire] flush: wire flushed [sanei_wire] flush: wire 3 [sanei_wire] flush: error status 32 [sanei_wire] flush: wire flushed [sanei_wire] sanei_w_set_dir: buffers flushed, direction changed [sanei_wire] sanei_w_word: wire 3 [sanei_wire] sanei_w_space: 4 bytes for wire 3 [sanei_wire] sanei_w_space: wire is in invalid state 32 [sanei_wire] sanei_w_word: value = 8 [sanei_wire] sanei_w_call: error status 32 [net] do_cancel: 0x8051c00 scanimage: stopping scanner... (sig 13) [net] sane_cancel [...] Repeated over and over again untill I sigkill scanimage. No (unusual) messages in syslog. With saned -D128, the problem doesn't always occur. When it's there, I get something like the following as the last messages in syslog: Sep 9 14:50:26 hmg1 saned[4440]: do_scan: read 8188 bytes from scanner Sep 9 14:50:26 hmg1 saned[4440]: do_scan: wrote 8192 bytes to client Sep 9 14:50:26 hmg1 saned[4440]: do_scan: read 8188 bytes from scanner Sep 9 14:50:26 hmg1 saned[4440]: do_scan: wrote 8192 bytes to client Sep 9 14:50:26 hmg1 saned[4440]: do_scan: read 8188 bytes from scanner Sep 9 14:50:26 hmg1 saned[4440]: do_scan: wrote 8192 bytes to client Sep 9 14:50:26 hmg1 saned[4440]: do_scan: read 7772 bytes from scanner Sep 9 14:50:26 hmg1 saned[4440]: do_scan: wrote 7776 bytes to client Sep 9 14:50:26 hmg1 saned[4440]: do_scan: read 7772 bytes from scanner Sep 9 14:50:26 hmg1 saned[4440]: do_scan: wrote 416 bytes to client Sep 9 14:50:26 hmg1 saned[4440]: received signal 13 Sep 9 14:50:26 hmg1 saned[4440]: exiting Bye, Henning
