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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /fs/pstore/internal.h | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'fs/pstore/internal.h')
| -rw-r--r-- | fs/pstore/internal.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h new file mode 100644 index 000000000..079284120 --- /dev/null +++ b/fs/pstore/internal.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PSTORE_INTERNAL_H__ +#define __PSTORE_INTERNAL_H__ + +#include <linux/types.h> +#include <linux/time.h> +#include <linux/pstore.h> + +extern unsigned int kmsg_bytes; + +#ifdef CONFIG_PSTORE_FTRACE +extern unsigned long decode_ip(unsigned long ip); +extern void pstore_register_ftrace(void); +extern void pstore_unregister_ftrace(void); +ssize_t pstore_ftrace_combine_log(char **dest_log, size_t *dest_log_size, + const char *src_log, size_t src_log_size); +#else +static inline void pstore_register_ftrace(void) {} +static inline void pstore_unregister_ftrace(void) {} +static inline unsigned long decode_ip(unsigned long ip) { return ip; } +static inline ssize_t +pstore_ftrace_combine_log(char **dest_log, size_t *dest_log_size, + const char *src_log, size_t src_log_size) +{ + *dest_log_size = 0; + return 0; +} +#endif + +#ifdef CONFIG_PSTORE_PMSG +extern void pstore_register_pmsg(void); +extern void pstore_unregister_pmsg(void); +#else +static inline void pstore_register_pmsg(void) {} +static inline void pstore_unregister_pmsg(void) {} +#endif + +extern struct pstore_info *psinfo; + +extern void pstore_set_kmsg_bytes(unsigned int bytes); +extern void pstore_get_records(int); +extern void pstore_get_backend_records(struct pstore_info *psi, + struct dentry *root, int quiet); +extern int pstore_put_backend_records(struct pstore_info *psi); +extern int pstore_mkfile(struct dentry *root, + struct pstore_record *record); +extern void pstore_record_init(struct pstore_record *record, + struct pstore_info *psi); + +/* Called during pstore init/exit. */ +int __init pstore_init_fs(void); +void __exit pstore_exit_fs(void); + +#endif |