The patch titled
serial: fixup /proc/tty/driver/serial after proc_fops conversion
has been added to the -mm tree. Its filename is
serial-fixup-proc-tty-driver-serial-after-proc_fops-conversion.patch
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------------------------------------------------------
Subject: serial: fixup /proc/tty/driver/serial after proc_fops conversion
From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
"struct tty_driver *" lies in m->private not in v which is
SEQ_TOKEN_START which is 1 which is enough to trigger NULL dereference
next line:
BUG: unable to handle kernel NULL pointer dereference at 000000ad
IP: [<c040d689>] uart_proc_show+0xe/0x2b0
Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Reported-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>a
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/serial/serial_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/serial/serial_core.c~serial-fixup-proc-tty-driver-serial-after-proc_fops-conversion drivers/serial/serial_core.c
--- a/drivers/serial/serial_core.c~serial-fixup-proc-tty-driver-serial-after-proc_fops-conversion
+++ a/drivers/serial/serial_core.c
@@ -1765,7 +1765,7 @@ static void uart_line_info(struct seq_fi
static int uart_proc_show(struct seq_file *m, void *v)
{
- struct tty_driver *ttydrv = v;
+ struct tty_driver *ttydrv = m->private;
struct uart_driver *drv = ttydrv->driver_state;
int i;
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxx are
origin.patch
linux-next.patch
sysctl-dont-take-the-use-count-of-multiple-heads-at-a-time.patch
sysctl-lockdep-support-for-sysctl-reference-counting.patch
simplify-copy_thread.patch
simplify-copy_thread-checkpatch-fixes.patch
softirq-introduce-statistics-for-softirq.patch
proc-export-statistics-for-softirq-to-proc.patch
proc-export-statistics-for-softirq-to-proc-fix.patch
proc-update-document-for-proc-softirqs-and-proc-stat.patch
proc_sysctl-use-config_proc_sysctl-around-ipc-and-utsname-proc_handlers.patch
sysctl-fix-suid_dumpable-and-lease-break-time-sysctls.patch
namespaces-move-proc_net_get_sb-to-a-generic-fs-superc-helper.patch
namespaces-move-proc_net_get_sb-to-a-generic-fs-superc-helper-fix.patch
namespaces-mqueue-ns-move-mqueue_mnt-into-struct-ipc_namespace.patch
namespaces-ipc-namespaces-implement-support-for-posix-msqueues.patch
namespaces-ipc-namespaces-implement-support-for-posix-msqueues-initialize-init_ipc_nscount-to-1.patch
namespaces-mqueue-namespace-adapt-sysctl.patch
namespaces-mqueue-namespace-adapt-sysctl-update.patch
namespaces-mqueue-namespace-adapt-sysctl-update-fix.patch
serial-fixup-proc-tty-driver-serial-after-proc_fops-conversion.patch
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