#ifndef __UNWIND_H #define __UNWIND_H #include #include "event.h" #include "symbol.h" #include "thread.h" struct unwind_entry { struct map *map; struct symbol *sym; u64 ip; }; typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); struct unwind_libunwind_ops { int (*prepare_access)(struct thread *thread); void (*flush_access)(struct thread *thread); void (*finish_access)(struct thread *thread); int (*get_entries)(unwind_entry_cb_t cb, void *arg, struct thread *thread, struct perf_sample *data, int max_stack); }; #ifdef HAVE_DWARF_UNWIND_SUPPORT int unwind__get_entries(unwind_entry_cb_t cb, void *arg, struct thread *thread, struct perf_sample *data, int max_stack); /* libunwind specific */ #ifdef HAVE_LIBUNWIND_SUPPORT #ifndef LIBUNWIND__ARCH_REG_ID #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum) #endif #ifndef LIBUNWIND__ARCH_REG_SP #define LIBUNWIND__ARCH_REG_SP PERF_REG_SP #endif #ifndef LIBUNWIND__ARCH_REG_IP #define LIBUNWIND__ARCH_REG_IP PERF_REG_IP #endif int LIBUNWIND__ARCH_REG_ID(int regnum); int unwind__prepare_access(struct thread *thread, struct map *map, bool *initialized); void unwind__flush_access(struct thread *thread); void unwind__finish_access(struct thread *thread); #else static inline int unwind__prepare_access(struct thread *thread __maybe_unused, struct map *map __maybe_unused, bool *initialized __maybe_unused) { return 0; } static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} #endif #else static inline int unwind__get_entries(unwind_entry_cb_t cb __maybe_unused, void *arg __maybe_unused, struct thread *thread __maybe_unused, struct perf_sample *data __maybe_unused, int max_stack __maybe_unused) { return 0; } static inline int unwind__prepare_access(struct thread *thread __maybe_unused, struct map *map __maybe_unused, bool *initialized __maybe_unused) { return 0; } static inline void unwind__flush_access(struct thread *thread __maybe_unused) {} static inline void unwind__finish_access(struct thread *thread __maybe_unused) {} #endif /* HAVE_DWARF_UNWIND_SUPPORT */ #endif /* __UNWIND_H */ '>
path: root/fs/nfsd/state.h
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authorKinglong Mee <kinglongmee@gmail.com>2017-01-18 19:04:42 +0800
committerJ. Bruce Fields <bfields@redhat.com>2017-01-31 12:29:24 -0500
commitd19fb70dd68c4e960e2ac09b0b9c79dfdeefa726 (patch)
tree8ce91162810ddf366f475ca22861c705aea115fa /fs/nfsd/state.h
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
NFSD: Fix a null reference case in find_or_create_lock_stateid()
nfsd assigns the nfs4_free_lock_stateid to .sc_free in init_lock_stateid(). If nfsd doesn't go through init_lock_stateid() and put stateid at end, there is a NULL reference to .sc_free when calling nfs4_put_stid(ns). This patch let the nfs4_stid.sc_free assignment to nfs4_alloc_stid(). Cc: stable@vger.kernel.org Fixes: 356a95ece7aa "nfsd: clean up races in lock stateid searching..." Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/state.h')
-rw-r--r--fs/nfsd/state.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h