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[ Upstream commit 76489955c6d4a065ca69dc88faf7a50a59b66f35 ]
The comapt_xxx_class symbols aren't declared in anything that
lib/comapt_audit.c is including (arm64 build) which is causing
the following sparse warnings:
lib/compat_audit.c:7:10: warning: symbol 'compat_dir_class'
was not declared. Should it be static?
lib/compat_audit.c:12:10: warning: symbol 'compat_read_class'
was not declared. Should it be static?
lib/compat_audit.c:17:10: warning: symbol 'compat_write_class'
was not declared. Should it be static?
lib/compat_audit.c:22:10: warning: symbol 'compat_chattr_class'
was not declared. Should it be static?
lib/compat_audit.c:27:10: warning: symbol 'compat_signal_class'
was not declared. Should it be static?
Trying to fix this by chaning compat_audit.c to inclde <linux/audit.h>
does not work on arm64 due to compile errors with the extra includes
that changing this header makes. The simpler thing would be just to
move the definitons of these symbols out of <linux/audit.h> into
<linux/audit_arch.h> which is included.
Fixes: 4b58841149dca ("audit: Add generic compat syscall support")
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
[PM: rewrite subject line, fixed line length in description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit e455ca40dbcf2cd50d1e59bf4b2752b300bcdad4 ]
Building with 'make W=1' reveals two function definitions without
a previous prototype in the audit code:
lib/compat_audit.c:32:5: error: no previous prototype for 'audit_classify_compat_syscall' [-Werror=missing-prototypes]
kernel/audit.c:1813:14: error: no previous prototype for 'audit_serial' [-Werror=missing-prototypes]
The first one needs a declaration from linux/audit.h but cannot
include that header without causing conflicting (compat) syscall number
definitions, so move the it into linux/audit_arch.h.
The second one is declared conditionally based on CONFIG_AUDITSYSCALL
but needed as a local function even when that option is disabled, so
move the declaration out of the #ifdef block.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Stable-dep-of: 76489955c6d4 ("audit: move the compat_xxx_class[] extern declarations to audit_arch.h")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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The openat2(2) syscall was added in kernel v5.6 with commit
fddb5d430ad9 ("open: introduce openat2(2) syscall").
Add the openat2(2) syscall to the audit syscall classifier.
Link: https://github.com/linux-audit/audit-kernel/issues/67
Link: https://lore.kernel.org/r/f5f1a4d8699613f8c02ce762807228c841c2e26f.1621363275.git.rgb@redhat.com
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
[PM: merge fuzz due to previous header rename, commit line wraps]
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Replace audit syscall class magic numbers with macros.
This required putting the macros into new header file
include/linux/audit_arch.h since the syscall macros were
included for both 64 bit and 32 bit in any compat code, causing
redefinition warnings.
Link: https://lore.kernel.org/r/2300b1083a32aade7ae7efb95826e8f3f260b1df.1621363275.git.rgb@redhat.com
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
[PM: renamed header to audit_arch.h after consulting with Richard]
Signed-off-by: Paul Moore <paul@paul-moore.com>
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