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charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 105a36f3694e Merge tag 'kbuild-fixes-v6.0-3' of git://git... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13a64288880000 kernel config: https://syzkaller.appspot.com/x/.config?x=b68d4454cd7c7d91 dashboard link: https://syzkaller.appspot.com/bug?extid=55a7541cfd25df68109e compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=111be26c880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c1deff080000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/bef111412fd8/disk-105a36f3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4db9dc916db0/vmlinux-105a36f3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+55a7541cfd25df68109e@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 264192 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:622:9 index 19 is out of range for type 'xad_t [18]' CPU: 1 PID: 3614 Comm: syz-executor388 Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x107/0x150 lib/ubsan.c:283 xtInsert+0xfbe/0x1020 fs/jfs/jfs_xtree.c:622 extAlloc+0xaa4/0x1030 fs/jfs/jfs_extent.c:145 jfs_get_block+0x410/0xe30 fs/jfs/inode.c:248 __block_write_begin_int+0x6f6/0x1d70 fs/buffer.c:2006 __block_write_begin fs/buffer.c:2056 [inline] block_write_begin+0x93/0x1e0 fs/buffer.c:2117 jfs_write_begin+0x2d/0x60 fs/jfs/inode.c:304 generic_perform_write+0x314/0x610 mm/filemap.c:3738 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3866 generic_file_write_iter+0xab/0x310 mm/filemap.c:3898 do_iter_write+0x6f0/0xc50 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_writev+0x27a/0x470 fs/read_write.c:971 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0e179f7fb9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffed4fe4448 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f0e179f7fb9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f0e179b7780 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00080000000000f4 R15: 0000000000000000 ================================================================================ --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches