Hello, syzbot found the following issue on: HEAD commit: 44149752e998 Merge tag 'cgroup-for-6.3-rc6-fixes' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100db37bc80000 kernel config: https://syzkaller.appspot.com/x/.config?x=710057cbb8def08c dashboard link: https://syzkaller.appspot.com/bug?extid=4a03518df1e31b537066 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7bfa303f05cc/disk-44149752.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4e8ea8730409/vmlinux-44149752.xz kernel image: https://storage.googleapis.com/syzbot-assets/e584bce13ba7/bzImage-44149752.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4a03518df1e31b537066@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KCSAN: data-race in __es_find_extent_range / __es_find_extent_range write to 0xffff88810a5a98a8 of 8 bytes by task 10666 on cpu 0: __es_find_extent_range+0x212/0x300 fs/ext4/extents_status.c:296 ext4_es_find_extent_range+0x91/0x260 fs/ext4/extents_status.c:318 ext4_ext_put_gap_in_cache fs/ext4/extents.c:2284 [inline] ext4_ext_map_blocks+0x120d/0x36c0 fs/ext4/extents.c:4191 ext4_map_blocks+0x2a0/0x1050 fs/ext4/inode.c:576 ext4_mpage_readpages+0x699/0x1440 fs/ext4/readpage.c:300 ext4_read_folio+0xc5/0x1a0 fs/ext4/inode.c:3308 filemap_read_folio+0x2c/0x100 mm/filemap.c:2424 filemap_fault+0x66f/0xb20 mm/filemap.c:3367 __do_fault mm/memory.c:4155 [inline] do_read_fault mm/memory.c:4506 [inline] do_fault mm/memory.c:4635 [inline] handle_pte_fault mm/memory.c:4923 [inline] __handle_mm_fault mm/memory.c:5065 [inline] handle_mm_fault+0x115d/0x21d0 mm/memory.c:5211 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x363/0xc30 mm/gup.c:1147 populate_vma_page_range mm/gup.c:1543 [inline] __mm_populate+0x23a/0x360 mm/gup.c:1652 mm_populate include/linux/mm.h:3026 [inline] vm_mmap_pgoff+0x174/0x210 mm/util.c:547 ksys_mmap_pgoff+0x2ac/0x320 mm/mmap.c:1410 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 read to 0xffff88810a5a98a8 of 8 bytes by task 10630 on cpu 1: __es_find_extent_range+0x79/0x300 fs/ext4/extents_status.c:270 __es_scan_range fs/ext4/extents_status.c:345 [inline] __es_scan_clu fs/ext4/extents_status.c:399 [inline] ext4_es_scan_clu+0xe4/0x190 fs/ext4/extents_status.c:415 ext4_insert_delayed_block fs/ext4/inode.c:1694 [inline] ext4_da_map_blocks fs/ext4/inode.c:1806 [inline] ext4_da_get_block_prep+0x575/0xa70 fs/ext4/inode.c:1870 __block_write_begin_int+0x349/0xe50 fs/buffer.c:2034 __block_write_begin+0x5e/0x110 fs/buffer.c:2084 ext4_da_write_begin+0x2fa/0x610 fs/ext4/inode.c:3084 generic_perform_write+0x1c3/0x3d0 mm/filemap.c:3926 ext4_buffered_write_iter+0x234/0x3e0 fs/ext4/file.c:289 ext4_file_write_iter+0xd7/0x10e0 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x463/0x760 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 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 value changed: 0xffff88810a653dc0 -> 0xffff8881067334d8 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10630 Comm: syz-executor.0 Not tainted 6.3.0-rc6-syzkaller-00138-g44149752e998 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 ================================================================== --- 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.
