https://github.com/torvalds/linux
Revision c75ab8a55ac1083c232e4407f52b0cadae6c1e0e authored by shamir rabinovitch on 16 December 2018, 07:01:09 UTC, committed by David S. Miller on 19 December 2018, 18:27:58 UTC
per comment from Leon in rdma mailing list
https://lkml.org/lkml/2018/10/31/312 :

Please don't forget to remove user triggered WARN_ON.
https://lwn.net/Articles/769365/
"Greg Kroah-Hartman raised the problem of core kernel API code that will
use WARN_ON_ONCE() to complain about bad usage; that will not generate
the desired result if WARN_ON_ONCE() is configured to crash the machine.
He was told that the code should just call pr_warn() instead, and that
the called function should return an error in such situations. It was
generally agreed that any WARN_ON() or WARN_ON_ONCE() calls that can be
triggered from user space need to be fixed."

in addition harden rds_sendmsg to detect and overcome issues with
invalid sg count and fail the sendmsg.

Suggested-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: shamir rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent ea01007
History
Tip revision: c75ab8a55ac1083c232e4407f52b0cadae6c1e0e authored by shamir rabinovitch on 16 December 2018, 07:01:09 UTC
net/rds: remove user triggered WARN_ON in rds_sendmsg
Tip revision: c75ab8a
File Mode Size
hvc
ipwireless
serdev
serial
vt
Kconfig -rw-r--r-- 16.2 KB
Makefile -rw-r--r-- 1.2 KB
amiserial.c -rw-r--r-- 43.8 KB
cyclades.c -rw-r--r-- 108.9 KB
ehv_bytechan.c -rw-r--r-- 21.4 KB
goldfish.c -rw-r--r-- 11.9 KB
isicom.c -rw-r--r-- 40.5 KB
mips_ejtag_fdc.c -rw-r--r-- 35.2 KB
moxa.c -rw-r--r-- 52.1 KB
moxa.h -rw-r--r-- 8.5 KB
mxser.c -rw-r--r-- 70.1 KB
mxser.h -rw-r--r-- 4.5 KB
n_gsm.c -rw-r--r-- 78.3 KB
n_hdlc.c -rw-r--r-- 27.2 KB
n_null.c -rw-r--r-- 1.3 KB
n_r3964.c -rw-r--r-- 31.2 KB
n_tracerouter.c -rw-r--r-- 6.6 KB
n_tracesink.c -rw-r--r-- 6.6 KB
n_tracesink.h -rw-r--r-- 850 bytes
n_tty.c -rw-r--r-- 61.5 KB
nozomi.c -rw-r--r-- 46.8 KB
pty.c -rw-r--r-- 24.5 KB
rocket.c -rw-r--r-- 91.7 KB
rocket.h -rw-r--r-- 3.8 KB
rocket_int.h -rw-r--r-- 41.6 KB
synclink.c -rw-r--r-- 228.7 KB
synclink_gt.c -rw-r--r-- 130.9 KB
synclinkmp.c -rw-r--r-- 146.1 KB
sysrq.c -rw-r--r-- 26.4 KB
tty_audit.c -rw-r--r-- 5.6 KB
tty_baudrate.c -rw-r--r-- 6.6 KB
tty_buffer.c -rw-r--r-- 16.2 KB
tty_io.c -rw-r--r-- 85.2 KB
tty_ioctl.c -rw-r--r-- 23.7 KB
tty_jobctrl.c -rw-r--r-- 14.0 KB
tty_ldisc.c -rw-r--r-- 19.6 KB
tty_ldsem.c -rw-r--r-- 10.8 KB
tty_mutex.c -rw-r--r-- 1.1 KB
tty_port.c -rw-r--r-- 18.1 KB
vcc.c -rw-r--r-- 23.2 KB

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