On Fri, Dec 13, 2024 at 01:43:50PM +0800, guocai.he.cn@xxxxxxxxxxxxx wrote: > From: Pei Li <peili.dev@xxxxxxxxx> > > [ Upstream commit 7063b80268e2593e58bee8a8d709c2f3ff93e2f2 ] > > When searching for the next smaller log2 block, BLKSTOL2() returned 0, > causing shift exponent -1 to be negative. > > This patch fixes the issue by exiting the loop directly when negative > shift is found. > > Reported-by: syzbot+61be3359d2ee3467e7e4@xxxxxxxxxxxxxxxxxxxxxxxxx > Closes: https://syzkaller.appspot.com/bug?extid=61be3359d2ee3467e7e4 > Signed-off-by: Pei Li <peili.dev@xxxxxxxxx> > Signed-off-by: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx> > Signed-off-by: Guocai He <guocai.he.cn@xxxxxxxxxxxxx> > --- > fs/jfs/jfs_dmap.c | 2 ++ > 1 file changed, 2 insertions(+) Now deleted, please see: https://lore.kernel.org/r/2024121322-conjuror-gap-b542@gregkh for what you all need to do, TOGETHER, to get this fixed and so that I can accept patches from your company in the future. thanks, greg k-h
