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linux-stable/arch/um/drivers
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Johannes Berg 57ae0b67b7 um: chan_user: Fix winch_tramp() return value 
The previous fix here was only partially correct, it did
result in returning a proper error value in case of error,
but it also clobbered the pid that we need to return from
this function (not just zero for success).

As a result, it returned 0 here, but later this is treated
as a pid and used to kill the process, but since it's now
0 we kill(0, SIGKILL), which makes UML kill itself rather
than just the helper thread.

Fix that and make it more obvious by using a separate
variable for the pid.

Fixes: ccf1236eca ("um: fix error return code in winch_tramp()")
Reported-and-tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-05-27 09:03:41 +02:00
..
chan.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
chan_kern.c um: line: Use separate IRQs per line 2022-05-27 09:03:41 +02:00
chan_user.c um: chan_user: Fix winch_tramp() return value 2022-05-27 09:03:41 +02:00
chan_user.h um: Add an option to make serial driver non-raw 2020-01-19 22:41:50 +01:00
cow.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
cow_sys.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cow_user.c um: ubd: use 64-bit time_t where possible 2019-12-18 18:07:31 +01:00
daemon.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
daemon_kern.c um: daemon: Make default socket configurable 2022-05-27 09:00:40 +02:00
daemon_user.c um: Some fixes to build UML with musl 2020-10-11 23:13:06 +02:00
fd.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
harddog_kern.c compat_ioctl: move WDIOC handling into wdt drivers 2019-10-23 17:23:46 +02:00
harddog_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
hostaudio_kern.c um: Remove unneeded variable 'ret' 2021-04-15 23:10:33 +02:00
Kconfig um: daemon: Make default socket configurable 2022-05-27 09:00:40 +02:00
line.c um: line: Use separate IRQs per line 2022-05-27 09:03:41 +02:00
line.h um: line: Use separate IRQs per line 2022-05-27 09:03:41 +02:00
Makefile um: xterm: Make default terminal emulator configurable 2022-05-27 08:50:07 +02:00
mconsole.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
mconsole_kern.c um: Fix uml_mconsole stop/go 2022-03-11 10:49:19 +01:00
mconsole_kern.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
mconsole_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
mmapper_kern.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
net_kern.c net: um: use eth_hw_addr_set() 2021-10-29 13:17:21 +01:00
net_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
null.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
pcap_kern.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
pcap_user.c um: Some fixes to build UML with musl 2020-10-11 23:13:06 +02:00
pcap_user.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
port.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
port_kern.c um: Support dynamic IRQ allocation 2020-12-13 22:22:08 +01:00
port_user.c um: port_user: Improve error handling when port-helper is not found 2022-03-11 10:55:55 +01:00
pty.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
random.c um: Remove IRQ_NONE type 2020-12-13 22:22:29 +01:00
rtc.h um: add a pseudo RTC 2021-02-12 21:38:52 +01:00
rtc_kern.c um: add a pseudo RTC 2021-02-12 21:38:52 +01:00
rtc_user.c isystem: trim/fixup stdarg.h and other headers 2021-08-19 09:02:55 +09:00
slip.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
slip_common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
slip_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
slip_kern.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
slip_user.c um: fix error return code in slip_open() 2021-06-17 22:10:05 +02:00
slirp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
slirp_kern.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
slirp_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
ssl.c um: line: Use separate IRQs per line 2022-05-27 09:03:41 +02:00
stderr_console.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stdio_console.c um: line: Use separate IRQs per line 2022-05-27 09:03:41 +02:00
stdio_console.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
tty.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
ubd.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
ubd_kern.c um: Fix WRITE_ZEROES in the UBD Driver 2022-03-11 10:46:34 +01:00
ubd_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
umcast.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
umcast_kern.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
umcast_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
vde.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
vde_kern.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
vde_user.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
vector_kern.c um: Migrate vector drivers to NAPI 2022-03-11 10:45:21 +01:00
vector_kern.h um: Migrate vector drivers to NAPI 2022-03-11 10:45:21 +01:00
vector_transports.c um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
vector_user.c uml: net: vector: fix const issue 2022-03-11 10:47:05 +01:00
vector_user.h uml: net: vector: fix const issue 2022-03-11 10:47:05 +01:00
vhost_user.h um: virtio: Replace zero-length array with flexible-array 2020-06-02 22:38:00 +02:00
virt-pci.c virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
virtio_uml.c um: virtio_uml: Fix broken device handling in time-travel 2022-05-27 09:03:41 +02:00
xterm.c um: xterm: Make default terminal emulator configurable 2022-05-27 08:50:07 +02:00
xterm.h um: Add SPDX headers for files in arch/um/drivers 2019-09-15 21:37:16 +02:00
xterm_kern.c um: Support dynamic IRQ allocation 2020-12-13 22:22:08 +01:00