fscrypt: AES-256-CBC-CTS using implementation "cts-cbc-aes-aesni" ------------[ cut here ]------------ sb_rdonly(sb) WARNING: fs/ext4/ext4_jbd2.c:83 at ext4_journal_check_start+0x24f/0x2b0 fs/ext4/ext4_jbd2.c:83, CPU#0: syz.3.4/5779 Modules linked in: CPU: 0 UID: 0 PID: 5779 Comm: syz.3.4 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:ext4_journal_check_start+0x24f/0x2b0 fs/ext4/ext4_jbd2.c:83 Code: 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3c f5 dc 08 cc e8 86 62 47 ff 41 bf fb ff ff ff eb e0 e8 79 62 47 ff eb d3 e8 72 62 47 ff 90 <0f> 0b 90 eb c8 e8 67 62 47 ff 90 0f 0b 90 43 80 7c 25 00 00 0f 85 RSP: 0018:ffffc900069875b0 EFLAGS: 00010287 RAX: ffffffff827f74fe RBX: ffff8880357d8000 RCX: 0000000000080000 RDX: ffffc900058d2000 RSI: 0000000000001ab7 RDI: 0000000000001ab8 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1004e8b081 R12: dffffc0000000000 R13: 1ffff11006afb105 R14: ffff8880357d8828 R15: 0000000000000001 FS: 00007f98db4e66c0(0000) GS:ffff888125bc3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc7a3b8d000 CR3: 0000000041bec000 CR4: 00000000003526f0 Call Trace: __ext4_journal_start_sb+0x14b/0x780 fs/ext4/ext4_jbd2.c:115 __ext4_new_inode+0x130b/0x3ec0 fs/ext4/ialloc.c:1091 ext4_mkdir+0x3ee/0xce0 fs/ext4/namei.c:3014 vfs_mkdir+0x408/0x620 fs/namei.c:5410 cachefiles_get_directory+0x23c/0xa30 fs/cachefiles/namei.c:132 cachefiles_add_cache+0xb06/0xde0 fs/cachefiles/cache.c:127 cachefiles_daemon_write+0x608/0x6c0 fs/cachefiles/daemon.c:284 vfs_write+0x29f/0xbb0 fs/read_write.c:685 ksys_write+0x156/0x270 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f98dd28e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f98db4e6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f98dd515fa0 RCX: 00007f98dd28e159 RDX: 0000000000000004 RSI: 0000200000000700 RDI: 0000000000000004 RBP: 00007f98dd32506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f98dd516038 R14: 00007f98dd515fa0 R15: 00007fff3529ca48