diff options
| -rw-r--r-- | fs/exec.c | 39 |
1 files changed, 17 insertions, 22 deletions
diff --git a/fs/exec.c b/fs/exec.c index 1d55d7536641..1221c4c43547 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1841,10 +1841,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) struct cred *cred; int retval = 0; int flag = 0; - int ispipe = 0; - char **helper_argv = NULL; - int helper_argc = 0; - int dump_count = 0; + int ispipe; static atomic_t core_dump_count = ATOMIC_INIT(0); struct coredump_params cprm = { .signr = signr, @@ -1914,6 +1911,9 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) unlock_kernel(); if (ispipe) { + int dump_count; + char **helper_argv; + if (cprm.limit == 1) { /* * Normally core limits are irrelevant to pipes, since @@ -1935,6 +1935,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) printk(KERN_WARNING "Aborting core\n"); goto fail_unlock; } + cprm.limit = RLIM_INFINITY; dump_count = atomic_inc_return(&core_dump_count); if (core_pipe_limit && (core_pipe_limit < dump_count)) { @@ -1944,26 +1945,21 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) goto fail_dropcount; } - helper_argv = argv_split(GFP_KERNEL, corename+1, &helper_argc); + helper_argv = argv_split(GFP_KERNEL, corename+1, NULL); if (!helper_argv) { printk(KERN_WARNING "%s failed to allocate memory\n", __func__); goto fail_dropcount; } - cprm.limit = RLIM_INFINITY; - - /* SIGPIPE can happen, but it's just never processed */ - cprm.file = NULL; - if (call_usermodehelper_fns(helper_argv[0], helper_argv, NULL, - UMH_WAIT_EXEC, umh_pipe_setup, - NULL, &cprm)) { - if (cprm.file) - filp_close(cprm.file, NULL); - + retval = call_usermodehelper_fns(helper_argv[0], helper_argv, + NULL, UMH_WAIT_EXEC, umh_pipe_setup, + NULL, &cprm); + argv_free(helper_argv); + if (retval) { printk(KERN_INFO "Core dump to %s pipe failed\n", corename); - goto fail_dropcount; + goto close_fail; } } else { struct inode *inode; @@ -2003,17 +1999,16 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) retval = binfmt->core_dump(&cprm); if (retval) current->signal->group_exit_code |= 0x80; -close_fail: + if (ispipe && core_pipe_limit) wait_for_dump_helpers(cprm.file); - filp_close(cprm.file, NULL); +close_fail: + if (cprm.file) + filp_close(cprm.file, NULL); fail_dropcount: - if (dump_count) + if (ispipe) atomic_dec(&core_dump_count); fail_unlock: - if (helper_argv) - argv_free(helper_argv); - revert_creds(old_cred); put_cred(cred); coredump_finish(mm); |