Paolo Abeni 419ce133ab tcp: allow again tcp_disconnect() when threads are waiting ... As reported by Tom, .NET and applications build on top of it rely on connect(AF_UNSPEC) to async cancel pending I/O operations on TCP socket. The blamed commit below caused a regression, as such cancellation can now fail. As suggested by Eric, this change addresses the problem explicitly causing blocking I/O operation to terminate immediately (with an error) when a concurrent disconnect() is executed. Instead of tracking the number of threads blocked on a given socket, track the number of disconnect() issued on such socket. If such counter changes after a blocking operation releasing and re-acquiring the socket lock, error out the current operation. Fixes: 4faeee0cf8 ("tcp: deny tcp_disconnect() when threads are waiting") Reported-by: Tom Deseyn <tdeseyn@redhat.com> Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1886305 Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/f3b95e47e3dbed840960548aebaa8d954372db41.1697008693.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-10-13 16:49:32 -07:00
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acpi
asm-generic	hyperv-fixes for v6.6-rc6	2023-10-10 11:01:21 -07:00
clocksource
crypto
drm	drm/tests: helpers: Avoid a driver uaf	2023-09-14 13:57:58 +02:00
dt-bindings
keys
kunit
kvm
linux	Including fixes from CAN and BPF.	2023-10-12 13:07:00 -07:00
math-emu
media
memory
misc
net	tcp: allow again tcp_disconnect() when threads are waiting	2023-10-13 16:49:32 -07:00
pcmcia
ras
rdma
rv
scsi	ATA fixes for 6.6-rc4	2023-09-29 13:38:34 -07:00
soc
sound	ASoC: core: Do not call link_exit() on uninitialized rtd objects	2023-09-29 14:17:49 +02:00
target
trace	x86/xen: move paravirt lazy code	2023-09-19 07:04:49 +02:00
uapi	Including fixes from CAN and BPF.	2023-10-12 13:07:00 -07:00
ufs
vdso
video
xen	arm/xen: remove lazy mode related definitions	2023-09-19 07:04:49 +02:00