loop0: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: slab-use-after-free in dbAllocBits+0x617/0x630 fs/jfs/jfs_dmap.c:2248 Read of size 8 at addr ffff888076c01eb8 by task syz-executor288/5029 CPU: 1 PID: 5029 Comm: syz-executor288 Not tainted 6.5.0-rc4-next-20230803-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 dbAllocBits+0x617/0x630 fs/jfs/jfs_dmap.c:2248 dbAllocDmap+0x5c/0x100 fs/jfs/jfs_dmap.c:2025 dbAllocNear fs/jfs/jfs_dmap.c:1251 [inline] dbAlloc+0x780/0xaa0 fs/jfs/jfs_dmap.c:836 ea_get+0xc0d/0x12c0 fs/jfs/xattr.c:514 __jfs_setxattr+0x1ed/0x1050 fs/jfs/xattr.c:718 __jfs_set_acl+0x110/0x1a0 fs/jfs/acl.c:87 jfs_set_acl+0x252/0x330 fs/jfs/acl.c:115 set_posix_acl+0x259/0x320 fs/posix_acl.c:956 vfs_set_acl+0x539/0x900 fs/posix_acl.c:1135 do_set_acl+0xda/0x1b0 fs/posix_acl.c:1280 do_setxattr+0xeb/0x170 fs/xattr.c:627 setxattr+0x159/0x170 fs/xattr.c:653 path_setxattr+0x1a3/0x1d0 fs/xattr.c:672 __do_sys_lsetxattr fs/xattr.c:695 [inline] __se_sys_lsetxattr fs/xattr.c:691 [inline] __x64_sys_lsetxattr+0xc1/0x160 fs/xattr.c:691 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa11fbb0679 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007ffdaeb69408 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fa11fbb0679 RDX: 0000000020000180 RSI: 0000000020000040 RDI: 0000000020000000 RBP: 00007fa11fc29610 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdaeb695d8 R14: 0000000000000001 R15: 0000000000000001 Allocated by task 4484: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x172/0x3b0 mm/slub.c:3502 getname_flags.part.0+0x50/0x4d0 fs/namei.c:140 getname_flags include/linux/audit.h:319 [inline] getname+0x90/0xe0 fs/namei.c:219 do_sys_openat2+0x100/0x1e0 fs/open.c:1416 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 4484: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] kmem_cache_free+0xf0/0x490 mm/slub.c:3831 putname fs/namei.c:273 [inline] putname+0x101/0x140 fs/namei.c:259 do_sys_openat2+0x15c/0x1e0 fs/open.c:1430 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888076c01100 which belongs to the cache names_cache of size 4096 The buggy address is located 3512 bytes inside of freed 4096-byte region [ffff888076c01100, ffff888076c02100) The buggy address belongs to the physical page: page:ffffea0001db0000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76c00 head:ffffea0001db0000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888014a44780 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4484, tgid 4484 (udevd), ts 38584697194, free_ts 38575567893 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1569 prep_new_page mm/page_alloc.c:1576 [inline] get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3255 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4511 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2292 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x24e/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8bc/0x1570 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x392/0x3b0 mm/slub.c:3502 getname_flags.part.0+0x50/0x4d0 fs/namei.c:140 getname_flags include/linux/audit.h:319 [inline] getname+0x90/0xe0 fs/namei.c:219 do_sys_openat2+0x100/0x1e0 fs/open.c:1416 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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+0x508/0xb90 mm/page_alloc.c:2382 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2477 __unfreeze_partials+0x21d/0x240 mm/slub.c:2655 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x18b/0x1d0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x172/0x3b0 mm/slub.c:3502 kmem_cache_zalloc include/linux/slab.h:710 [inline] alloc_empty_file+0x73/0x1d0 fs/file_table.c:206 path_openat+0xdc/0x29c0 fs/namei.c:3779 do_filp_open+0x1de/0x430 fs/namei.c:3820 do_sys_openat2+0x176/0x1e0 fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888076c01d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888076c01e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888076c01e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888076c01f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888076c01f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================