Hello, syzbot found the following issue on: HEAD commit: 81c325bbf94e kmsan: hooks: do not check memory in kmsan_in.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=11473f2db00000 kernel config: https://syzkaller.appspot.com/x/.config?x=2d8b9a11641dc9aa dashboard link: https://syzkaller.appspot.com/bug?extid=11542230634289d7f1f6 compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+11542230634289d7f1f6@xxxxxxxxxxxxxxxxxxxxxxxxx syz-executor.0 (pid 3634) is setting deprecated v1 encryption policy; recommend upgrading to v2. ===================================================== BUG: KMSAN: uninit-value in ext4_inode_journal_mode+0x29f/0x510 fs/ext4/ext4_jbd2.c:16 ext4_inode_journal_mode+0x29f/0x510 fs/ext4/ext4_jbd2.c:16 ext4_should_journal_data fs/ext4/ext4_jbd2.h:465 [inline] ext4_evict_inode+0x1b5/0x2d10 fs/ext4/inode.c:202 evict+0x4f4/0xdd0 fs/inode.c:590 iput_final fs/inode.c:1670 [inline] iput+0xc53/0x1100 fs/inode.c:1696 __ext4_new_inode+0xf32/0x8440 fs/ext4/ialloc.c:1362 ext4_create+0x455/0x940 fs/ext4/namei.c:2746 lookup_open fs/namei.c:3280 [inline] open_last_lookups fs/namei.c:3350 [inline] path_openat+0x2e88/0x5ea0 fs/namei.c:3556 do_filp_open+0x306/0x760 fs/namei.c:3586 do_sys_openat2+0x263/0x8f0 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_creat fs/open.c:1304 [inline] __se_sys_creat fs/open.c:1298 [inline] __ia32_sys_creat+0x122/0x1a0 fs/open.c:1298 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409 alloc_pages+0x8a5/0xb80 alloc_slab_page mm/slub.c:1810 [inline] allocate_slab+0x287/0x1c10 mm/slub.c:1947 new_slab mm/slub.c:2010 [inline] ___slab_alloc+0xb85/0x1e30 mm/slub.c:3039 __slab_alloc mm/slub.c:3126 [inline] slab_alloc_node mm/slub.c:3217 [inline] slab_alloc mm/slub.c:3259 [inline] kmem_cache_alloc+0xbb3/0x11c0 mm/slub.c:3264 ext4_alloc_inode+0x5e/0x870 fs/ext4/super.c:1295 alloc_inode fs/inode.c:235 [inline] new_inode_pseudo+0xa6/0x5a0 fs/inode.c:944 new_inode+0x5a/0x3c0 fs/inode.c:973 __ext4_new_inode+0x3cb/0x8440 fs/ext4/ialloc.c:960 ext4_mkdir+0x623/0x1870 fs/ext4/namei.c:2929 vfs_mkdir+0x8ca/0xba0 fs/namei.c:3883 do_mkdirat+0x3f5/0x8e0 fs/namei.c:3909 __do_sys_mkdirat fs/namei.c:3924 [inline] __se_sys_mkdirat fs/namei.c:3922 [inline] __x64_sys_mkdirat+0x11a/0x160 fs/namei.c:3922 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae CPU: 0 PID: 3634 Comm: syz-executor.0 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
