syzbot has bisected this issue to: commit 7661809d493b426e979f39ab512e3adf41fbcc69 Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Wed Jul 14 16:45:49 2021 +0000 mm: don't allow oversized kvmalloc() calls bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13bc74c2700000 start commit: f4bc5bbb5fef Merge tag 'nfsd-5.17-2' of git://git.kernel.o.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=107c74c2700000 console output: https://syzkaller.appspot.com/x/log.txt?x=17bc74c2700000 kernel config: https://syzkaller.appspot.com/x/.config?x=5707221760c00a20 dashboard link: https://syzkaller.appspot.com/bug?extid=11421fbbff99b989670e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12e514a4700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fcdf8a700000 Reported-by: syzbot+11421fbbff99b989670e@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 7661809d493b ("mm: don't allow oversized kvmalloc() calls") For information about bisection process see: https://goo.gl/tpsmEJ#bisection