Patch "sparc64: Fix exception handling in UltraSPARC-III memcpy." has been added to the 4.9-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
sparc64: Fix exception handling in UltraSPARC-III memcpy.
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sparc64-fix-exception-handling-in-ultrasparc-iii-memcpy.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From foo@baz Tue Aug 8 16:28:41 PDT 2017
From: "David S. Miller" <[email protected]>
Date: Fri, 4 Aug 2017 09:47:52 -0700
Subject: sparc64: Fix exception handling in UltraSPARC-III memcpy.
From: "David S. Miller" <[email protected]>
[ Upstream commit 0ede1c401332173ab0693121dc6cde04a4dbf131 ]
Mikael Pettersson reported that some test programs in the strace-4.18 testsuite cause an OOPS.
After some debugging it turns out that garbage values are returned when an exception occurs, causing the fixup memset() to be run with bogus arguments.
The problem is that two of the exception handler stubs write the successfully copied length into the wrong register.
--- arch/sparc/lib/U3memcpy.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
arch/sparc/lib/U3memcpy.S +2 -2
@@ -145,13 +145,13 @@ ENDPROC(U3_retl_o2_plus_GS_plus_0x08) ENTRY(U3_retl_o2_and_7_plus_GS) and %o2, 7, %o2 retl - add %o2, GLOBAL_SPARE, %o2 + add %o2, GLOBAL_SPARE, %o0 ENDPROC(U3_retl_o2_and_7_plus_GS) ENTRY(U3_retl_o2_and_7_plus_GS_plus_8) add GLOBAL_SPARE, 8, GLOBAL_SPARE and %o2, 7, %o2 retl - add %o2, GLOBAL_SPARE, %o2 + add %o2, GLOBAL_SPARE, %o0 ENDPROC(U3_retl_o2_and_7_plus_GS_plus_8) #endif
Patches currently in stable-queue which might be from [email protected] are
queue-4.9/ipv4-ipv6-initialize-treq-txhash-in-cookie_v_check.patch queue-4.9/openvswitch-fix-potential-out-of-bound-access-in-parse_ct.patch queue-4.9/ipv6-don-t-increase-ipstats_mib_fragfails-twice-in-ip6_fragment.patch queue-4.9/sctp-don-t-dereference-ptr-before-leaving-_sctp_walk_-params-errors.patch queue-4.9/net-ethernet-nb8800-handle-all-4-rgmii-modes-identically.patch queue-4.9/sctp-fix-the-check-for-_sctp_walk_params-and-_sctp_walk_errors.patch queue-4.9/packet-fix-use-after-free-in-prb_retire_rx_blk_timer_expired.patch queue-4.9/rtnetlink-allocate-more-memory-for-dev_set_mac_address.patch queue-4.9/tcp_bbr-remove-sk_pacing_rate-0-transient-during-init.patch queue-4.9/tcp_bbr-introduce-bbr_bw_to_pacing_rate-helper.patch queue-4.9/sparc64-measure-receiver-forward-progress-to-avoid-send-mondo-timeout.patch queue-4.9/sparc64-fix-exception-handling-in-ultrasparc-iii-memcpy.patch queue-4.9/dccp-fix-a-memleak-that-dccp_ipv6-doesn-t-put-reqsk-properly.patch queue-4.9/tcp_bbr-introduce-bbr_init_pacing_rate_from_rtt-helper.patch queue-4.9/sparc64-prevent-perf-from-running-during-super-critical-sections.patch queue-4.9/net-dsa-b53-add-missing-arl-entries-for-bcm53125.patch queue-4.9/dccp-fix-a-memleak-that-dccp_ipv4-doesn-t-put-reqsk-properly.patch queue-4.9/mcs7780-fix-initialization-when-config_vmap_stack-is-enabled.patch queue-4.9/net-zero-terminate-ifr_name-in-dev_ifname.patch queue-4.9/tcp_bbr-init-pacing-rate-on-first-rtt-sample.patch queue-4.9/net-phy-correctly-process-phy_halted-in-phy_stop_machine.patch queue-4.9/ipv6-avoid-overflow-of-offset-in-ip6_find_1stfragopt.patch queue-4.9/xen-netback-correctly-schedule-rate-limited-queues.patch queue-4.9/dccp-fix-a-memleak-for-dccp_feat_init-err-process.patch queue-4.9/ipv4-initialize-fib_trie-prior-to-register_netdev_notifier-call.patch queue-4.9/tcp_bbr-cut-pacing-rate-only-if-filled-pipe.patch