Hello, syzbot found the following issue on: HEAD commit: 692b7dc87ca6 Merge tag 'hyperv-fixes-signed-20230619' of g.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=110bb2df280000 kernel config: https://syzkaller.appspot.com/x/.config?x=e74b395fe4978721 dashboard link: https://syzkaller.appspot.com/bug?extid=3699edf4da1e736b317b compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16b373a7280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1749e8f3280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/38d2d82cb73f/disk-692b7dc8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c2933a370148/vmlinux-692b7dc8.xz kernel image: https://storage.googleapis.com/syzbot-assets/ae0615062569/bzImage-692b7dc8.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/7ffba913af27/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3699edf4da1e736b317b@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 32768 ERROR: (device loop0): xtTruncate: XT_GETPAGE: xtree page corrupt ERROR: (device loop0): remounting filesystem as read-only BUG at fs/jfs/jfs_txnmgr.c:523 assert(tblk->next == 0) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:523! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4995 Comm: syz-executor157 Not tainted 6.4.0-rc7-syzkaller-00014-g692b7dc87ca6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:txEnd+0x556/0x560 fs/jfs/jfs_txnmgr.c:523 Code: fe e9 cd fe ff ff e8 e9 71 80 fe 48 c7 c7 00 81 21 8b 48 c7 c6 39 7d 21 8b ba 0b 02 00 00 48 c7 c1 40 81 21 8b e8 4a a0 a2 07 <0f> 0b 0f 1f 84 00 00 00 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 RSP: 0018:ffffc90003a1f5b0 EFLAGS: 00010246 RAX: 0000000000000036 RBX: 0000000000000001 RCX: 41752a4d4c338600 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff920004ce227 R08: ffffffff816f00ac R09: fffff52000743e2d R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90002671138 R15: 0000000000000110 FS: 0000555555bc0300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdb3a73ff8 CR3: 000000007d1a7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> jfs_truncate_nolock+0x2f3/0x390 fs/jfs/inode.c:391 jfs_truncate+0xcb/0x140 fs/jfs/inode.c:412 jfs_setattr+0x526/0x780 fs/jfs/file.c:119 notify_change+0xc8b/0xf40 fs/attr.c:483 do_truncate+0x220/0x300 fs/open.c:66 handle_truncate fs/namei.c:3295 [inline] do_open fs/namei.c:3640 [inline] path_openat+0x294e/0x3170 fs/namei.c:3791 do_filp_open+0x234/0x490 fs/namei.c:3818 do_sys_openat2+0x13f/0x500 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_open fs/open.c:1380 [inline] __se_sys_open fs/open.c:1376 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1376 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7faa7bec2769 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcd6b116f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faa7bec2769 RDX: 0000000000000000 RSI: 000000000014527e RDI: 0000000020000040 RBP: 00007faa7be82000 R08: 0000000000005dea R09: 0000000000000000 R10: 00007ffcd6b115c0 R11: 0000000000000246 R12: 00007faa7be82090 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txEnd+0x556/0x560 fs/jfs/jfs_txnmgr.c:523 Code: fe e9 cd fe ff ff e8 e9 71 80 fe 48 c7 c7 00 81 21 8b 48 c7 c6 39 7d 21 8b ba 0b 02 00 00 48 c7 c1 40 81 21 8b e8 4a a0 a2 07 <0f> 0b 0f 1f 84 00 00 00 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 RSP: 0018:ffffc90003a1f5b0 EFLAGS: 00010246 RAX: 0000000000000036 RBX: 0000000000000001 RCX: 41752a4d4c338600 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff920004ce227 R08: ffffffff816f00ac R09: fffff52000743e2d R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90002671138 R15: 0000000000000110 FS: 0000555555bc0300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdb3a73ff8 CR3: 000000007d1a7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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. If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
