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charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 22f902dfc51e Merge tag 'i2c-for-6.10-rc7' of git://git.ker.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=175c1059980000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ace69f521989b1f dashboard link: https://syzkaller.appspot.com/bug?extid=808f3f84407f08a93022 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17eb06e1980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16e6f6e1980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/da00a62c06a3/disk-22f902df.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e090db7ab1fa/vmlinux-22f902df.xz kernel image: https://storage.googleapis.com/syzbot-assets/5332f53497de/bzImage-22f902df.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/ec0f0006ae2c/mount_0.gz Bisection is inconclusive: the issue happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15d45c9e980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=17d45c9e980000 console output: https://syzkaller.appspot.com/x/log.txt?x=13d45c9e980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+808f3f84407f08a93022@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:661:7 index 128 is out of range for type 's64[128]' (aka 'long long[128]') CPU: 0 PID: 5083 Comm: syz-executor157 Not tainted 6.10.0-rc6-syzkaller-00215-g22f902dfc51e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429 dbNextAG+0x3f3/0x630 fs/jfs/jfs_dmap.c:661 diAlloc+0x6c6/0x1760 fs/jfs/jfs_imap.c:1369 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56 jfs_create+0x1be/0xb90 fs/jfs/namei.c:92 lookup_open fs/namei.c:3505 [inline] open_last_lookups fs/namei.c:3574 [inline] path_openat+0x1a84/0x35f0 fs/namei.c:3810 do_filp_open+0x235/0x490 fs/namei.c:3840 do_sys_openat2+0x13e/0x1d0 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1439 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdb9c0a0a99 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffecc111738 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdb9c0a0a99 RDX: 000000000000275a RSI: 00000000200005c0 RDI: 00000000ffffff9c RBP: 00007fdb9c11a5f0 R08: 000055555c2c14c0 R09: 000055555c2c14c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffecc111760 R13: 00007ffecc111988 R14: 431bde82d7b634db R15: 00007fdb9c0e903b ---[ end trace ]--- --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup