================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: use-after-free in mapping_unevictable include/linux/pagemap.h:252 [inline] BUG: KASAN: use-after-free in folio_evictable mm/internal.h:138 [inline] BUG: KASAN: use-after-free in lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210 Read of size 8 at addr ffff888055d7abb0 by task syz-executor.0/4360 CPU: 0 PID: 4360 Comm: syz-executor.0 Not tainted 6.1.93-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] mapping_unevictable include/linux/pagemap.h:252 [inline] folio_evictable mm/internal.h:138 [inline] lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210 folio_batch_move_lru+0x31a/0x720 mm/swap.c:246 folio_add_lru+0x46a/0xd70 mm/swap.c:534 filemap_add_folio+0x223/0x570 mm/filemap.c:949 __filemap_get_folio+0x807/0xe80 mm/filemap.c:1976 pagecache_get_page+0x28/0x250 mm/folio-compat.c:110 ext4_da_write_begin+0x581/0x9c0 fs/ext4/inode.c:3004 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3817 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285 ext4_file_write_iter+0x1d2/0x1880 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f912a27cea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f912af740c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f912a3b3f80 RCX: 00007f912a2