From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
syzbot+30d675e3ca03c1c351e7@syzkaller.appspotmail.com,
Oleg Nesterov <oleg@redhat.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
syzkaller-bugs@googlegroups.com, Ingo Molnar <mingo@kernel.org>
Subject: [PATCH 4.9 26/32] uprobes/x86: Remove incorrect WARN_ON() in uprobe_init_insn()
Date: Mon, 16 Jul 2018 09:36:34 +0200 [thread overview]
Message-ID: <20180716073507.766198974@linuxfoundation.org> (raw)
In-Reply-To: <20180716073504.433996952@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oleg Nesterov <oleg@redhat.com>
commit 90718e32e1dcc2479acfa208ccfc6442850b594c upstream.
insn_get_length() has the side-effect of processing the entire instruction
but only if it was decoded successfully, otherwise insn_complete() can fail
and in this case we need to just return an error without warning.
Reported-by: syzbot+30d675e3ca03c1c351e7@syzkaller.appspotmail.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: syzkaller-bugs@googlegroups.com
Link: https://lkml.kernel.org/lkml/20180518162739.GA5559@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/uprobes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -290,7 +290,7 @@ static int uprobe_init_insn(struct arch_
insn_init(insn, auprobe->insn, sizeof(auprobe->insn), x86_64);
/* has the side-effect of processing the entire instruction */
insn_get_length(insn);
- if (WARN_ON_ONCE(!insn_complete(insn)))
+ if (!insn_complete(insn))
return -ENOEXEC;
if (is_prefix_bad(insn))
next prev parent reply other threads:[~2018-07-16 7:43 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 7:36 [PATCH 4.9 00/32] 4.9.113-stable review Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 01/32] nvme: validate admin queue before unquiesce Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 02/32] MIPS: Call dump_stack() from show_regs() Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 03/32] MIPS: Use async IPIs for arch_trigger_cpumask_backtrace() Greg Kroah-Hartman
2018-07-16 9:29 ` 陈华才
2018-07-16 9:40 ` [PATCH " Greg Kroah-Hartman
2018-07-16 9:46 ` [PATCH 4.9 03/32] MIPS: Use async IPIs forarch_trigger_cpumask_backtrace() 陈华才
2018-07-16 10:46 ` Greg Kroah-Hartman
2018-07-16 18:34 ` Greg Kroah-Hartman
2018-07-17 6:53 ` [PATCH 4.9 03/32] MIPS: Use async IPIsforarch_trigger_cpumask_backtrace() 陈华才
2018-07-17 7:20 ` Greg Kroah-Hartman
2018-07-17 8:14 ` [PATCH 4.9 03/32] MIPS: Use asyncIPIsforarch_trigger_cpumask_backtrace() 陈华才
2018-07-16 7:36 ` [PATCH 4.9 04/32] MIPS: Fix ioremap() RAM check Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 05/32] mmc: dw_mmc: fix card threshold control configuration Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 06/32] ibmasm: dont write out of bounds in read handler Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 07/32] ata: Fix ZBC_OUT command block check Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 08/32] ata: Fix ZBC_OUT all bit handling Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 09/32] vmw_balloon: fix inflation with batching Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 10/32] ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 11/32] USB: serial: ch341: fix type promotion bug in ch341_control_in() Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 12/32] USB: serial: cp210x: add another USB ID for Qivicon ZigBee stick Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 13/32] USB: serial: keyspan_pda: fix modem-status error handling Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 14/32] USB: yurex: fix out-of-bounds uaccess in read handler Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 15/32] USB: serial: mos7840: fix status-register error handling Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 16/32] usb: quirks: add delay quirks for Corsair Strafe Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 17/32] xhci: xhci-mem: off by one in xhci_stream_id_to_ring() Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 18/32] HID: usbhid: add quirk for innomedia INNEX GENESIS/ATARI adapter Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 19/32] Fix up non-directory creation in SGID directories Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 20/32] ALSA: hda - Handle pm failure during hotplug Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 21/32] fs, elf: make sure to page align bss in load_elf_library Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 22/32] tools build: fix # escaping in .cmd files for future Make Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 23/32] i2c: tegra: Fix NACK error handling Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 24/32] iw_cxgb4: correctly enforce the max reg_mr depth Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 25/32] nvme-pci: Remap CMB SQ entries on every controller reset Greg Kroah-Hartman
2018-07-16 7:36 ` Greg Kroah-Hartman [this message]
2018-07-16 7:36 ` [PATCH 4.9 27/32] netfilter: nf_queue: augment nfqa_cfg_policy Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 28/32] netfilter: x_tables: initialise match/target check parameter struct Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 29/32] loop: add recursion validation to LOOP_CHANGE_FD Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 30/32] PM / hibernate: Fix oops at snapshot_write() Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 31/32] RDMA/ucm: Mark UCM interface as BROKEN Greg Kroah-Hartman
2018-07-16 7:36 ` [PATCH 4.9 32/32] loop: remember whether sysfs_create_group() was done Greg Kroah-Hartman
2018-07-16 13:55 ` [PATCH 4.9 00/32] 4.9.113-stable review Nathan Chancellor
2018-07-17 7:00 ` Greg Kroah-Hartman
2018-07-16 16:25 ` Guenter Roeck
2018-07-16 16:31 ` Greg Kroah-Hartman
2018-07-16 16:41 ` Guenter Roeck
2018-07-16 17:43 ` Greg Kroah-Hartman
2018-07-16 18:02 ` Guenter Roeck
2018-07-16 18:31 ` Greg Kroah-Hartman
2018-07-16 18:33 ` Greg Kroah-Hartman
2018-07-16 19:37 ` Guenter Roeck
2018-07-17 7:00 ` Greg Kroah-Hartman
2018-07-17 8:05 ` Naresh Kamboju
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