On Thu, Feb 21, 2019 at 03:49:57PM +0200, Alexander Shishkin wrote: > When an output port driver is removed, also remove references to it from > any masters. Failing to do this causes a NULL ptr dereference when > configuring another output port: > > > BUG: unable to handle kernel NULL pointer dereference at 000000000000000d > > RIP: 0010:master_attr_store+0x9d/0x160 [intel_th_gth] > > Call Trace: > > dev_attr_store+0x1b/0x30 > > sysfs_kf_write+0x3c/0x50 > > kernfs_fop_write+0x125/0x1a0 > > __vfs_write+0x3a/0x190 > > ? __vfs_write+0x5/0x190 > > ? _cond_resched+0x1a/0x50 > > ? rcu_all_qs+0x5/0xb0 > > ? __vfs_write+0x5/0x190 > > vfs_write+0xb8/0x1b0 > > ksys_write+0x55/0xc0 > > __x64_sys_write+0x1a/0x20 > > do_syscall_64+0x5a/0x140 > > entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > Signed-off-by: Alexander Shishkin <[email protected]> > Reported-by: Ammy Yi <[email protected]> > --- > drivers/hwtracing/intel_th/gth.c | 4 ++++ > 1 file changed, 4 insertions(+)
Shouldn't this have a cc: stable? And what commit does this "fix"? thanks, greg k-h
