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| author | Vladislav Yasevich <vladislav.yasevich@hp.com> | 2005-11-11 16:07:40 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-11-11 16:07:40 -0800 |
| commit | 19c7e9eef503dc1ae926f3d26c56f88bee568d7b (patch) | |
| tree | a1e79285a2ab740280435fb11d79e74a3c4afbe2 /include/net | |
| parent | 1e7d3d90c95b32374057e454417b2f50440be20e (diff) | |
| download | blackbird-op-linux-19c7e9eef503dc1ae926f3d26c56f88bee568d7b.tar.gz blackbird-op-linux-19c7e9eef503dc1ae926f3d26c56f88bee568d7b.zip | |
[SCTP]: Fix ia64 NaT consumption fault with sctp_sideffect commands.
On ia64, it is possible to get NaT Consumption Fault and a kernel panic
when initializing sctp sideeffect commands arguments. The union
sctp_arg_t contains different sized elements and when loading a smaller
sized element (32 or 16 bits), it is possible for a speculative load to
fail and result in a NaT bit set which causes a kernel crash. The easy
way to get around it is to load the largerst member of the union.
Signed-off-by: Vladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/sctp/command.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h index dc107ffad483..34a1a09e5aef 100644 --- a/include/net/sctp/command.h +++ b/include/net/sctp/command.h @@ -120,6 +120,7 @@ typedef union { int error; sctp_state_t state; sctp_event_timeout_t to; + unsigned long zero; void *ptr; struct sctp_chunk *chunk; struct sctp_association *asoc; @@ -148,17 +149,17 @@ static inline sctp_arg_t SCTP_NULL(void) } static inline sctp_arg_t SCTP_NOFORCE(void) { - sctp_arg_t retval; retval.i32 = 0; return retval; + sctp_arg_t retval = {.zero = 0UL}; retval.i32 = 0; return retval; } static inline sctp_arg_t SCTP_FORCE(void) { - sctp_arg_t retval; retval.i32 = 1; return retval; + sctp_arg_t retval = {.zero = 0UL}; retval.i32 = 1; return retval; } #define SCTP_ARG_CONSTRUCTOR(name, type, elt) \ static inline sctp_arg_t \ SCTP_## name (type arg) \ -{ sctp_arg_t retval; retval.elt = arg; return retval; } +{ sctp_arg_t retval = {.zero = 0UL}; retval.elt = arg; return retval; } SCTP_ARG_CONSTRUCTOR(I32, __s32, i32) SCTP_ARG_CONSTRUCTOR(U32, __u32, u32) |
