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net/sonic: Add mutual exclusion for accessing shared state
Finn Thain authored 
[ Upstream commit 865ad2f2 ]

The netif_stop_queue() call in sonic_send_packet() races with the
netif_wake_queue() call in sonic_interrupt(). This causes issues
like "NETDEV WATCHDOG: eth0 (macsonic): transmit queue 0 timed out".
Fix this by disabling interrupts when accessing tx_skb[] and next_tx.
Update a comment to clarify the synchronization properties.

Fixes: efcce839

 ("[PATCH] macsonic/jazzsonic network drivers update")
Tested-by: default avatarStan Johnson <userm57@yahoo.com>
Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
3c8a4483
Name Last commit Last update
Documentation PM / devfreq: Add new name attribute for sysfs
arch powerpc/fsl/dts: add fsl,erratum-a011043
block block: don't use bio->bi_vcnt to figure out segment number
certs Replace magic for trusting the secondary keyring with #define
crypto crypto: pcrypt - Fix user-after-free on module unload
drivers net/sonic: Add mutual exclusion for accessing shared state
firmware Fix built-in early-load Intel microcode alignment
fs reiserfs: Fix memory leak of journal device string
include cfg80211: Fix radar event during another phy CAC
init fork: fix some -Wmissing-prototypes warnings
ipc ipc/mqueue.c: only perform resource calculation if user valid
kernel cgroup: Prevent double killing of css when enabling threaded cgroup
lib bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free()
mm mm/mempolicy.c: fix out of bounds write in mpol_parse_str()
net vti[6]: fix packet tx through bpf_redirect()
samples samples: bpf: fix syscall_tp due to unused syscall
scripts ARM: 8950/1: ftrace/recordmcount: filter relocation types
security keys: Timestamp new keys
sound ASoC: sti: fix possible sleep-in-atomic
tools tools lib: Fix builds when glibc contains strlcpy()
usr kbuild: clean compressed initramfs image
virt KVM: arm/arm64: vgic: Don't rely on the wrong pending table
.cocciconfig scripts: add Linux .cocciconfig for coccinelle
.get_maintainer.ignore Add hch to .get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files
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