FAT-fs (loop4): bogus logical sector size 65024 FAT-fs (loop4): Can't find a valid FAT filesystem ================================================================== BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lrus_cpu write to 0xffff888237d42f10 of 8 bytes by task 17655 on cpu 1: __invalidate_bh_lrus fs/buffer.c:1393 [inline] invalidate_bh_lrus_cpu+0xad/0xe0 fs/buffer.c:1434 lru_add_drain_cpu+0x243/0x270 mm/swap.c:645 lru_add_drain mm/swap.c:724 [inline] __pagevec_release+0x57/0xa0 mm/swap.c:989 pagevec_release include/linux/pagevec.h:81 [inline] __filemap_fdatawait_range+0x141/0x1b0 mm/filemap.c:521 filemap_fdatawait_range mm/filemap.c:545 [inline] filemap_write_and_wait_range+0x264/0x390 mm/filemap.c:695 __iomap_dio_rw+0x4cd/0xa60 fs/iomap/direct-io.c:533 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:649 ext4_dio_read_iter fs/ext4/file.c:77 [inline] ext4_file_read_iter+0x21a/0x290 fs/ext4/file.c:128 call_read_iter include/linux/fs.h:2108 [inline] generic_file_splice_read+0x22a/0x310 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0xf5/0x170 fs/splice.c:979 do_sendfile+0x773/0xda0 fs/read_write.c:1260 __do_sys_sendfile64 fs/read_write.c:1325 [inline] __se_sys_sendfile64 fs/read_write.c:1311 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888237d42f10 of 8 bytes by task 17646 on cpu 0: has_bh_in_lru+0x31/0x1c0 fs/buffer.c:1415 smp_call_function_many_cond+0x226/0x620 kernel/smp.c:915 on_each_cpu_cond_mask+0x31/0x40 kernel/smp.c:1133 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x26/0x30 fs/buffer.c:1424 invalidate_bdev+0x4b/0x70 fs/block_dev.c:95 __loop_clr_fd+0x566/0x8f0 drivers/block/loop.c:1402 loop_clr_fd drivers/block/loop.c:1496 [inline] lo_ioctl+0xa48/0x1340 drivers/block/loop.c:1852 blkdev_ioctl+0x1d0/0x3c0 block/ioctl.c:585 block_ioctl+0x6d/0x80 fs/block_dev.c:1604 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:1055 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffff888106a33888 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 17646 Comm: syz-executor.4 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================