Hello, syzbot found the following issue on: HEAD commit: 3e7bb4f24617 Merge tag '6.3-rc6-smb311-client-negcontext-f.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13c2e6ebc80000 kernel config: https://syzkaller.appspot.com/x/.config?x=710057cbb8def08c dashboard link: https://syzkaller.appspot.com/bug?extid=8a416e3cb063d4787b0f 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/d1f21f86a5e7/disk-3e7bb4f2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5769a034d50c/vmlinux-3e7bb4f2.xz kernel image: https://storage.googleapis.com/syzbot-assets/82288ce4b761/bzImage-3e7bb4f2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8a416e3cb063d4787b0f@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KCSAN: data-race in __filemap_add_folio / invalidate_bdev read-write to 0xffff8881023fec48 of 8 bytes by task 5672 on cpu 1: __filemap_add_folio+0x38c/0x720 mm/filemap.c:904 filemap_add_folio+0x6f/0x150 mm/filemap.c:939 filemap_create_folio mm/filemap.c:2545 [inline] filemap_get_pages+0x5d2/0xea0 mm/filemap.c:2605 filemap_read+0x223/0x680 mm/filemap.c:2693 blkdev_read_iter+0x2ca/0x370 block/fops.c:606 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x39a/0x560 fs/read_write.c:470 ksys_read+0xeb/0x1a0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:621 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 0xffff8881023fec48 of 8 bytes by task 3141 on cpu 0: invalidate_bdev+0x35/0x80 block/bdev.c:84 bdev_disk_changed+0x102/0xbb0 block/partitions/core.c:668 __loop_clr_fd+0x2b9/0x3b0 drivers/block/loop.c:1189 loop_clr_fd drivers/block/loop.c:1257 [inline] lo_ioctl+0xe9e/0x12f0 drivers/block/loop.c:1563 blkdev_ioctl+0x3a0/0x490 block/ioctl.c:615 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:856 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:856 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: 0x0000000000000000 -> 0x0000000000000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3141 Comm: syz-executor.2 Not tainted 6.3.0-rc6-syzkaller-00188-g3e7bb4f24617 #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.
