loop0: detected capacity change from 0 to 128 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= hpfs: filesystem error: invalid number of hotfixes: 2066844986, used: 2066844985; already mounted read-only hpfs: filesystem error: improperly stopped hpfs: filesystem error: warning: spare dnodes used, try chkdsk hpfs: You really don't want any checks? You are crazy... hpfs: hpfs_map_sector(): read error hpfs: code page support is disabled ================================================================== BUG: KASAN: use-after-free in strcmp+0x6f/0xc0 lib/string.c:283 Read of size 1 at addr ffff8880516548a6 by task syz.0.0/5321 CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 strcmp+0x6f/0xc0 lib/string.c:283 hpfs_get_ea+0x114/0xdb0 fs/hpfs/ea.c:139 hpfs_read_inode+0x19d/0x1010 fs/hpfs/inode.c:63 hpfs_fill_super+0x129d/0x2040 fs/hpfs/super.c:650 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691 vfs_get_tree+0x92/0x2b0 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3727 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f979bf9076a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f979cdbce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f979cdbcef0 RCX: 00007f979bf9076a RDX: 000020000000a000 RSI: 0000200000009ec0 RDI: 00007f979cdbceb0 RBP: 000020000000a000 R08: 00007f979cdbcef0 R09: 0000000003a00041 R10: 0000000003a00041 R11: 0000000000000246 R12: 0000200000009ec0 R13: 00007f979cdbceb0 R14: 0000000000009e22 R15: 0000200000000140 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x51654 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 ffffea0001459548 ffffea0001459488 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x1280a(GFP_NOWAIT|__GFP_HIGHMEM|__GFP_MOVABLE|__GFP_NORETRY), pid 72, tgid 72 (kswapd0), ts 75806183746, free_ts 75816391518 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:5217 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline] alloc_pages_node_noprof include/linux/gfp.h:311 [inline] alloc_zpdesc mm/zsmalloc.c:237 [inline] alloc_zspage+0x309/0xbc0 mm/zsmalloc.c:984 zs_malloc+0x3e3/0x720 mm/zsmalloc.c:1300 zswap_compress mm/zswap.c:910 [inline] zswap_store_page mm/zswap.c:1429 [inline] zswap_store+0x1062/0x1f40 mm/zswap.c:1540 swap_writeout+0x710/0xd70 mm/page_io.c:275 writeout mm/vmscan.c:662 [inline] pageout mm/vmscan.c:721 [inline] shrink_folio_list+0x3011/0x4c70 mm/vmscan.c:1453 evict_folios+0x471e/0x57c0 mm/vmscan.c:4745 try_to_shrink_lruvec+0x8a3/0xb50 mm/vmscan.c:4908 shrink_one+0x21b/0x7c0 mm/vmscan.c:4953 shrink_many mm/vmscan.c:5016 [inline] lru_gen_shrink_node mm/vmscan.c:5094 [inline] shrink_node+0x315d/0x3780 mm/vmscan.c:6081 kswapd_shrink_node mm/vmscan.c:6941 [inline] balance_pgdat mm/vmscan.c:7124 [inline] kswapd+0x147c/0x2800 mm/vmscan.c:7389 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 page last free pid 4721 tgid 4721 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __folio_put+0x21b/0x2c0 mm/swap.c:112 folio_put include/linux/mm.h:1425 [inline] zpdesc_put mm/zpdesc.h:137 [inline] __free_zspage+0x338/0x5b0 mm/zsmalloc.c:851 zs_free+0x395/0x510 mm/zsmalloc.c:1379 zswap_entry_free+0x345/0x500 mm/zswap.c:720 zswap_load+0x3b3/0x4c0 mm/zswap.c:1654 swap_read_folio+0x681/0x2530 mm/page_io.c:637 swap_cluster_readahead+0x358/0x630 mm/swap_state.c:656 swapin_readahead+0x17d/0xb50 mm/swap_state.c:813 do_swap_page+0x43b/0x5b20 mm/memory.c:4713 handle_pte_fault mm/memory.c:6180 [inline] __handle_mm_fault+0xe55/0x5400 mm/memory.c:6318 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487 do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 Memory state around the buggy address: ffff888051654780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888051654800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888051654880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888051654900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888051654980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================