mirror of https://gitee.com/openkylin/linux.git
966a5d1b85
Error handling code following a kmalloc should free the allocated data. The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| lmc | ||
| .gitignore | ||
| Kconfig | ||
| Makefile | ||
| c101.c | ||
| cosa.c | ||
| cosa.h | ||
| cycx_drv.c | ||
| cycx_main.c | ||
| cycx_x25.c | ||
| dlci.c | ||
| dscc4.c | ||
| farsync.c | ||
| farsync.h | ||
| hd64570.c | ||
| hd64570.h | ||
| hd64572.c | ||
| hd64572.h | ||
| hdlc.c | ||
| hdlc_cisco.c | ||
| hdlc_fr.c | ||
| hdlc_ppp.c | ||
| hdlc_raw.c | ||
| hdlc_raw_eth.c | ||
| hdlc_x25.c | ||
| hostess_sv11.c | ||
| ixp4xx_hss.c | ||
| lapbether.c | ||
| n2.c | ||
| pc300-falc-lh.h | ||
| pc300.h | ||
| pc300_drv.c | ||
| pc300_tty.c | ||
| pc300too.c | ||
| pci200syn.c | ||
| sbni.c | ||
| sbni.h | ||
| sdla.c | ||
| sealevel.c | ||
| wanxl.c | ||
| wanxl.h | ||
| wanxlfw.S | ||
| wanxlfw.inc_shipped | ||
| x25_asy.c | ||
| x25_asy.h | ||
| z85230.c | ||
| z85230.h | ||