Hello, syzbot found the following issue on: HEAD commit: d7a5aa4b3c00 Merge tag 'perf-tools-fixes-for-v6.11-2024-08.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17ed77c9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=92c0312151c4e32e dashboard link: https://syzkaller.appspot.com/bug?extid=1e5f71cac2c1db825478 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=1380adf3980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11e4d5f3980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/64022429061b/disk-d7a5aa4b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f4aba88f7db8/vmlinux-d7a5aa4b.xz kernel image: https://storage.googleapis.com/syzbot-assets/120456a2d9dc/bzImage-d7a5aa4b.xz mounted in repro #1: https://storage.googleapis.com/syzbot-assets/8df834fb9381/mount_0.gz mounted in repro #2: https://storage.googleapis.com/syzbot-assets/af3cad97858b/mount_4.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1e5f71cac2c1db825478@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5875 at lib/iov_iter.c:552 iov_iter_revert+0x34d/0x390 lib/iov_iter.c:552 Modules linked in: CPU: 0 UID: 0 PID: 5875 Comm: syz-executor332 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:iov_iter_revert+0x34d/0x390 lib/iov_iter.c:552 Code: 48 89 df 48 89 cd e8 f2 ee 50 fd 48 89 e9 48 89 0b 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 34 cd ec fc 90 <0f> 0b 90 eb e2 e8 29 cd ec fc eb db 44 89 e9 80 e1 07 38 c1 0f 8c RSP: 0018:ffffc90004d0fbe0 EFLAGS: 00010293 RAX: ffffffff84a6bd2c RBX: ffffffffffffe00a RCX: ffff888023519e00 RDX: 0000000000000000 RSI: ffffffffffffe00a RDI: 000000007ffff000 RBP: 0000000000002000 R08: ffffffff84a6ba1d R09: 1ffffffff1fed4e5 R10: dffffc0000000000 R11: fffffbfff1fed4e6 R12: 1ffff920009a1fb1 R13: ffffc90004d0fd70 R14: ffffc90004d0fd70 R15: 0000000000000000 FS: 00007f1d02fd56c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000000a CR3: 0000000064990000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> generic_file_read_iter+0x2d0/0x430 mm/filemap.c:2789 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x9bd/0xbc0 fs/read_write.c:476 ksys_read+0x1a0/0x2c0 fs/read_write.c:619 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: 0033:0x7f1d0302c829 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 1f 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1d02fd5218 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f1d030cf728 RCX: 00007f1d0302c829 RDX: 0000000000002000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f1d030cf720 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1d0309aaac R13: 00007f1d03099fe0 R14: 0031656c69662f2e R15: 0030656c69662f2e </TASK> --- 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 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
