ext4: Bad value for 'max_dir_size_kb' ================================================================== BUG: KASAN: slab-out-of-bounds in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: slab-out-of-bounds in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: slab-out-of-bounds in mapping_release_always include/linux/pagemap.h:279 [inline] BUG: KASAN: slab-out-of-bounds in folio_needs_release mm/internal.h:187 [inline] BUG: KASAN: slab-out-of-bounds in shrink_folio_list+0x2dbf/0x3e60 mm/vmscan.c:2067 Read of size 8 at addr ffff888055980c91 by task syz-executor.4/6969 CPU: 1 PID: 6969 Comm: syz-executor.4 Not tainted 6.4.0-next-20230707-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:364 print_report mm/kasan/report.c:475 [inline] kasan_report+0x11d/0x130 mm/kasan/report.c:588 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0xf0/0x190 mm/kasan/generic.c:187 instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] mapping_release_always include/linux/pagemap.h:279 [inline] folio_needs_release mm/internal.h:187 [inline] shrink_folio_list+0x2dbf/0x3e60 mm/vmscan.c:2067 reclaim_folio_list+0xd0/0x390 mm/vmscan.c:2801 reclaim_pages+0x442/0x670 mm/vmscan.c:2837 madvise_cold_or_pageout_pte_range+0x100e/0x1ee0 mm/madvise.c:533 walk_pmd_range mm/pagewalk.c:140 [inline] walk_pud_range mm/pagewalk.c:218 [inline] walk_p4d_range mm/pagewalk.c:253 [inline] walk_pgd_range+0x9e7/0x1470 mm/pagewalk.c:290 __walk_page_range+0x651/0x780 mm/pagewalk.c:392 walk_page_range+0x311/0x4a0 mm/pagewalk.c:490 madvise_pageout_page_range mm/madvise.c:591 [inline] madvise_pageout+0x2fe/0x560 mm/madvise.c:618 madvise_vma_behavior+0x61a/0x21a0 mm/madvise.c:1039 madvise_walk_vmas+0x1c7/0x2b0 mm/madvise.c:1268 do_madvise.part.0+0x276/0x490 mm/madvise.c:1448 do_madvise mm/madvise.c:1461 [inline] __do_sys_madvise mm/madvise.c:1461 [inline] __se_sys_madvise mm/madvise.c:1459 [inline] __x64_sys_madvise+0x117/0x150 mm/madvise.c:1459 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb5d2a8c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb5d3722168 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007fb5d2babf80 RCX: 00007fb5d2a8c389 RDX: 0000000000000015 RSI: 0000000000600000 RDI: 0000000020000000 RBP: 00007fb5d2ad7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1536309f R14: 00007fb5d3722300 R15: 0000000000022000 Allocated by task 4479: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x173/0x390 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0xe2/0x630 mm/rmap.c:361 dup_mmap+0xc0f/0x14b0 kernel/fork.c:732 dup_mm kernel/fork.c:1694 [inline] copy_mm kernel/fork.c:1743 [inline] copy_process+0x6663/0x75c0 kernel/fork.c:2509 kernel_clone+0xeb/0x890 kernel/fork.c:2917 __do_sys_clone+0xba/0x100 kernel/fork.c:3060 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888055980bb0 which belongs to the cache anon_vma of size 208 The buggy address is located 17 bytes to the right of allocated 208-byte region [ffff888055980bb0, ffff888055980c80) The buggy address belongs to the physical page: page:ffffea0001566000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888055980550 pfn:0x55980 memcg:ffff888077359701 anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff888014674140 0000000000000000 dead000000000001 raw: ffff888055980550 00000000800f000c 00000001ffffffff ffff888077359701 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 5094, tgid 5094 (modprobe), ts 335644883576, free_ts 335598487141 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1569 prep_new_page mm/page_alloc.c:1576 [inline] get_page_from_freelist+0xfd9/0x2c40 mm/page_alloc.c:3256 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4512 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x25f/0x390 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0xbc3/0x15d0 mm/slub.c:3215 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x371/0x390 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] __anon_vma_prepare+0x2c6/0x580 mm/rmap.c:203 anon_vma_prepare include/linux/rmap.h:159 [inline] do_anonymous_page mm/memory.c:4112 [inline] do_pte_missing mm/memory.c:3671 [inline] handle_pte_fault mm/memory.c:4949 [inline] __handle_mm_fault+0x39e6/0x3dd0 mm/memory.c:5089 handle_mm_fault+0x2a1/0x9e0 mm/memory.c:5254 do_user_addr_fault+0x435/0x10a0 arch/x86/mm/fault.c:1415 handle_page_fault arch/x86/mm/fault.c:1509 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1565 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1160 [inline] free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2383 free_unref_page+0x33/0x370 mm/page_alloc.c:2478 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x1d3/0x350 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc_node+0x51/0x1a0 mm/slab_common.c:992 kmalloc_node include/linux/slab.h:602 [inline] kvmalloc_node+0xa2/0x1a0 mm/util.c:604 kvmalloc include/linux/slab.h:720 [inline] kvzalloc include/linux/slab.h:728 [inline] allocate_hook_entries_size net/netfilter/core.c:61 [inline] nf_hook_entries_grow+0x247/0x850 net/netfilter/core.c:140 __nf_register_net_hook+0x141/0x890 net/netfilter/core.c:435 nf_register_net_hook+0x118/0x170 net/netfilter/core.c:578 nf_register_net_hooks+0x5d/0xc0 net/netfilter/core.c:594 nf_ct_netns_do_get+0x390/0x630 net/netfilter/nf_conntrack_proto.c:457 nf_ct_netns_inet_get net/netfilter/nf_conntrack_proto.c:566 [inline] nf_ct_netns_get+0x60/0x160 net/netfilter/nf_conntrack_proto.c:588 nf_conncount_init net/netfilter/nf_conncount.c:544 [inline] nf_conncount_init+0x116/0x410 net/netfilter/nf_conncount.c:527 ovs_ct_limit_init net/openvswitch/conntrack.c:1631 [inline] ovs_ct_init+0x27e/0x4d0 net/openvswitch/conntrack.c:2040 Memory state around the buggy address: ffff888055980b80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 ffff888055980c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888055980c80: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ^ ffff888055980d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888055980d80: 00 00 fc fc fc fc fc fc fc fc 00 00 00 00 00 00 ==================================================================