16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
150 lines
6.7 KiB
C
150 lines
6.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdbool.h>
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#include <stdlib.h>
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#include "tests.h"
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#include "dso.h"
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#include "debug.h"
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static int test(const char *path, bool alloc_name, bool alloc_ext,
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bool kmod, bool comp, const char *name, const char *ext)
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{
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struct kmod_path m;
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memset(&m, 0x0, sizeof(m));
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TEST_ASSERT_VAL("kmod_path__parse",
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!__kmod_path__parse(&m, path, alloc_name, alloc_ext));
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pr_debug("%s - alloc name %d, alloc ext %d, kmod %d, comp %d, name '%s', ext '%s'\n",
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path, alloc_name, alloc_ext, m.kmod, m.comp, m.name, m.ext);
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TEST_ASSERT_VAL("wrong kmod", m.kmod == kmod);
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TEST_ASSERT_VAL("wrong comp", m.comp == comp);
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if (ext)
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TEST_ASSERT_VAL("wrong ext", m.ext && !strcmp(ext, m.ext));
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else
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TEST_ASSERT_VAL("wrong ext", !m.ext);
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if (name)
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TEST_ASSERT_VAL("wrong name", m.name && !strcmp(name, m.name));
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else
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TEST_ASSERT_VAL("wrong name", !m.name);
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free(m.name);
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free(m.ext);
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return 0;
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}
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static int test_is_kernel_module(const char *path, int cpumode, bool expect)
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{
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TEST_ASSERT_VAL("is_kernel_module",
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(!!is_kernel_module(path, cpumode)) == (!!expect));
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pr_debug("%s (cpumode: %d) - is_kernel_module: %s\n",
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path, cpumode, expect ? "true" : "false");
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return 0;
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}
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#define T(path, an, ae, k, c, n, e) \
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TEST_ASSERT_VAL("failed", !test(path, an, ae, k, c, n, e))
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#define M(path, c, e) \
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TEST_ASSERT_VAL("failed", !test_is_kernel_module(path, c, e))
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int test__kmod_path__parse(struct test *t __maybe_unused, int subtest __maybe_unused)
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{
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/* path alloc_name alloc_ext kmod comp name ext */
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T("/xxxx/xxxx/x-x.ko", true , true , true, false, "[x_x]", NULL);
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T("/xxxx/xxxx/x-x.ko", false , true , true, false, NULL , NULL);
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T("/xxxx/xxxx/x-x.ko", true , false , true, false, "[x_x]", NULL);
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T("/xxxx/xxxx/x-x.ko", false , false , true, false, NULL , NULL);
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M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
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M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_KERNEL, true);
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M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_USER, false);
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#ifdef HAVE_ZLIB_SUPPORT
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/* path alloc_name alloc_ext kmod comp name ext */
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T("/xxxx/xxxx/x.ko.gz", true , true , true, true, "[x]", "gz");
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T("/xxxx/xxxx/x.ko.gz", false , true , true, true, NULL , "gz");
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T("/xxxx/xxxx/x.ko.gz", true , false , true, true, "[x]", NULL);
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T("/xxxx/xxxx/x.ko.gz", false , false , true, true, NULL , NULL);
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M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
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M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
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M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("/xxxx/xxxx/x.gz", true , true , false, true, "x.gz" ,"gz");
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T("/xxxx/xxxx/x.gz", false , true , false, true, NULL ,"gz");
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T("/xxxx/xxxx/x.gz", true , false , false, true, "x.gz" , NULL);
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T("/xxxx/xxxx/x.gz", false , false , false, true, NULL , NULL);
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M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
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M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_KERNEL, false);
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M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("x.gz", true , true , false, true, "x.gz", "gz");
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T("x.gz", false , true , false, true, NULL , "gz");
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T("x.gz", true , false , false, true, "x.gz", NULL);
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T("x.gz", false , false , false, true, NULL , NULL);
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M("x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
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M("x.gz", PERF_RECORD_MISC_KERNEL, false);
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M("x.gz", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("x.ko.gz", true , true , true, true, "[x]", "gz");
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T("x.ko.gz", false , true , true, true, NULL , "gz");
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T("x.ko.gz", true , false , true, true, "[x]", NULL);
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T("x.ko.gz", false , false , true, true, NULL , NULL);
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M("x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
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M("x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
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M("x.ko.gz", PERF_RECORD_MISC_USER, false);
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#endif
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/* path alloc_name alloc_ext kmod comp name ext */
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T("[test_module]", true , true , true, false, "[test_module]", NULL);
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T("[test_module]", false , true , true, false, NULL , NULL);
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T("[test_module]", true , false , true, false, "[test_module]", NULL);
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T("[test_module]", false , false , true, false, NULL , NULL);
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M("[test_module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
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M("[test_module]", PERF_RECORD_MISC_KERNEL, true);
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M("[test_module]", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("[test.module]", true , true , true, false, "[test.module]", NULL);
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T("[test.module]", false , true , true, false, NULL , NULL);
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T("[test.module]", true , false , true, false, "[test.module]", NULL);
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T("[test.module]", false , false , true, false, NULL , NULL);
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M("[test.module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
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M("[test.module]", PERF_RECORD_MISC_KERNEL, true);
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M("[test.module]", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("[vdso]", true , true , false, false, "[vdso]", NULL);
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T("[vdso]", false , true , false, false, NULL , NULL);
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T("[vdso]", true , false , false, false, "[vdso]", NULL);
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T("[vdso]", false , false , false, false, NULL , NULL);
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M("[vdso]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
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M("[vdso]", PERF_RECORD_MISC_KERNEL, false);
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M("[vdso]", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("[vsyscall]", true , true , false, false, "[vsyscall]", NULL);
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T("[vsyscall]", false , true , false, false, NULL , NULL);
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T("[vsyscall]", true , false , false, false, "[vsyscall]", NULL);
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T("[vsyscall]", false , false , false, false, NULL , NULL);
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M("[vsyscall]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
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M("[vsyscall]", PERF_RECORD_MISC_KERNEL, false);
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M("[vsyscall]", PERF_RECORD_MISC_USER, false);
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/* path alloc_name alloc_ext kmod comp name ext */
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T("[kernel.kallsyms]", true , true , false, false, "[kernel.kallsyms]", NULL);
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T("[kernel.kallsyms]", false , true , false, false, NULL , NULL);
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T("[kernel.kallsyms]", true , false , false, false, "[kernel.kallsyms]", NULL);
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T("[kernel.kallsyms]", false , false , false, false, NULL , NULL);
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M("[kernel.kallsyms]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
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M("[kernel.kallsyms]", PERF_RECORD_MISC_KERNEL, false);
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M("[kernel.kallsyms]", PERF_RECORD_MISC_USER, false);
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return 0;
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}
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