================================================================== BUG: KCSAN: data-race in folio_mapping / page_cache_delete write to 0xffffea0004e6f7d8 of 8 bytes by task 31264 on cpu 0: page_cache_delete+0x30d/0x360 mm/filemap.c:143 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223 filemap_remove_folio+0x69/0x120 mm/filemap.c:255 truncate_inode_folio+0x204/0x210 mm/truncate.c:196 truncate_inode_pages_range+0x832/0xae0 mm/truncate.c:426 truncate_inode_pages+0x20/0x30 mm/truncate.c:452 kill_bdev block/bdev.c:77 [inline] set_blocksize+0x24e/0x270 block/bdev.c:153 sb_set_blocksize block/bdev.c:162 [inline] sb_min_blocksize+0x92/0x110 block/bdev.c:178 isofs_fill_super+0x702/0x17b0 fs/isofs/inode.c:658 mount_bdev+0x1e2/0x280 fs/super.c:1367 isofs_mount+0x2d/0x40 fs/isofs/inode.c:1567 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x49/0x190 fs/super.c:1497 do_new_mount+0x200/0x650 fs/namespace.c:3040 path_mount+0x4b1/0xb60 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x281/0x2d0 fs/namespace.c:3568 __x64_sys_mount+0x63/0x70 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 read to 0xffffea0004e6f7d8 of 8 bytes by task 7927 on cpu 1: folio_mapping+0x92/0x120 mm/util.c:806 folio_evictable mm/internal.h:136 [inline] __pagevec_lru_add_fn+0x134/0x520 mm/swap.c:1024 __pagevec_lru_add+0x1c6/0x320 mm/swap.c:1060 folio_add_lru+0x112/0x160 mm/swap.c:467 filemap_add_folio+0xf8/0x150 mm/filemap.c:974 page_cache_ra_unbounded+0x19e/0x2e0 mm/readahead.c:245 do_page_cache_ra mm/readahead.c:293 [inline] force_page_cache_ra+0x1c6/0x200 mm/readahead.c:324 page_cache_sync_ra+0xc8/0xf0 mm/readahead.c:695 page_cache_sync_readahead include/linux/pagemap.h:1234 [inline] filemap_get_pages mm/filemap.c:2594 [inline] filemap_read+0x3ef/0x1410 mm/filemap.c:2688 blkdev_read_iter+0x2c6/0x370 block/fops.c:594 call_read_iter include/linux/fs.h:2052 [inline] new_sync_read fs/read_write.c:401 [inline] vfs_read+0x5a5/0x6a0 fs/read_write.c:482 ksys_read+0xe8/0x1a0 fs/read_write.c:620 __do_sys_read fs/read_write.c:630 [inline] __se_sys_read fs/read_write.c:628 [inline] __x64_sys_read+0x3e/0x50 fs/read_write.c:628 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0xffff8881023a05c8 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7927 Comm: udevd Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== blk_print_req_error: 3 callbacks suppressed I/O error, dev loop3, sector 261104 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop3, logical block 0, async page read I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 blk_print_req_error: 17 callbacks suppressed I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop3, logical block 0, async page read I/O error, dev loop3, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop3, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read