On Tue, 15 Mar 2016, Benjamin Tissoires wrote: > > BUG: KASAN: slab-out-of-bounds in memcpy+0x34/0x54 at addr ffffffc07135ea80 > > Write of size 4101 by task syz-executor/8747 > > CPU: 2 PID: 8747 Comm: syz-executor Tainted: G BU 3.18.0 #37 > > Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) > > Call trace: > > [<ffffffc00020ebcc>] dump_backtrace+0x0/0x258 arch/arm64/kernel/traps.c:83 > > [<ffffffc00020ee40>] show_stack+0x1c/0x2c arch/arm64/kernel/traps.c:172 > > [< inline >] __dump_stack lib/dump_stack.c:15 > > [<ffffffc001958114>] dump_stack+0x90/0x140 lib/dump_stack.c:50 > > [< inline >] print_error_description mm/kasan/report.c:97 > > [< inline >] kasan_report_error mm/kasan/report.c:278 > > [<ffffffc0004597dc>] kasan_report+0x268/0x530 mm/kasan/report.c:305 > > [<ffffffc0004592e8>] __asan_storeN+0x20/0x150 mm/kasan/kasan.c:718 > > [<ffffffc0004594e0>] memcpy+0x30/0x54 mm/kasan/kasan.c:299 > > [<ffffffc001306354>] __i2c_hid_command+0x2b0/0x7b4 drivers/hid/i2c-hid/i2c-hid.c:178 > > [< inline >] i2c_hid_set_or_send_report drivers/hid/i2c-hid/i2c-hid.c:321 > > [<ffffffc0013079a0>] i2c_hid_output_raw_report.isra.2+0x3d4/0x4b8 drivers/hid/i2c-hid/i2c-hid.c:589 > > [<ffffffc001307ad8>] i2c_hid_output_report+0x54/0x68 drivers/hid/i2c-hid/i2c-hid.c:602 > > [< inline >] hid_hw_output_report include/linux/hid.h:1039 > > [<ffffffc0012cc7a0>] hidraw_send_report+0x400/0x414 drivers/hid/hidraw.c:154 > > [<ffffffc0012cc7f4>] hidraw_write+0x40/0x64 drivers/hid/hidraw.c:177 > > [<ffffffc0004681dc>] vfs_write+0x1d4/0x3cc fs/read_write.c:534 > > [< inline >] SYSC_pwrite64 fs/read_write.c:627 > > [<ffffffc000468984>] SyS_pwrite64+0xec/0x144 fs/read_write.c:614 > > Object at ffffffc07135ea80, in cache kmalloc-512 > > Object allocated with size 268 bytes. > > > > Let's check data length against the buffer size before attempting to copy > > data over. > > > > Reported-by: Alexander Potapenko <glider@xxxxxxxxxx> > > Signed-off-by: Dmitry Torokhov <dtor@xxxxxxxxxxxx> > > --- > > > > This should probably go to stable as well, leaving it to Jiri/Benjamin > > to decide. > > Works for me: > Reviewed-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx> > > I also think this should go to stable. Jiri, can you add the tag when > committing? Makes sense, thanks to both of you. Added the Cc: stable and applied. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
