loop2: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: slab-out-of-bounds in diWrite+0xddb/0x19b0 fs/jfs/jfs_imap.c:753 Write of size 32 at addr ffff8880242040c0 by task syz.2.32/4360 CPU: 1 PID: 4360 Comm: syz.2.32 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189 memcpy+0x3c/0x60 mm/kasan/shadow.c:66 diWrite+0xddb/0x19b0 fs/jfs/jfs_imap.c:753 txCommit+0xa13/0x6ba0 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices+0x8af/0xbf0 fs/jfs/jfs_dtree.c:2959 jfs_readdir+0x2008/0x3bc0 fs/jfs/jfs_dtree.c:3315 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ffb230b7d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffb20f28038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007ffb232a7fa0 RCX: 00007ffb230b7d29 RDX: 000000000000009e RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007ffb23133b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffb232a7fa0 R15: 00007ffe3d381d68 Allocated by task 4291: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] lsm_file_alloc security/security.c:574 [inline] security_file_alloc+0x24/0x120 security/security.c:1530 __alloc_file+0xc3/0x240 fs/file_table.c:106 alloc_empty_file+0x92/0x180 fs/file_table.c:150 path_openat+0xfc/0x2f20 fs/namei.c:3728 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 4291: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 file_free fs/file_table.c:55 [inline] __fput+0x66d/0x8e0 fs/file_table.c:293 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff888024204070 which belongs to the cache lsm_file_cache of size 80 The buggy address is located 0 bytes to the right of 80-byte region [ffff888024204070, ffff8880242040c0) The buggy address belongs to the page: page:ffffea0000908100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x24204 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea00008f97c0 0000000400000004 ffff8880175ea000 raw: 0000000000000000 0000000000240024 00000001ffffffff 0000000000000000 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 1597, ts 9215323469, free_ts 8892642136 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] lsm_file_alloc security/security.c:574 [inline] security_file_alloc+0x24/0x120 security/security.c:1530 __alloc_file+0xc3/0x240 fs/file_table.c:106 alloc_empty_file+0x92/0x180 fs/file_table.c:150 path_openat+0xfc/0x2f20 fs/namei.c:3728 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_open_execat+0x165/0x7b0 fs/exec.c:918 bprm_execve+0x51f/0x17c0 fs/exec.c:1827 kernel_execve+0x8ce/0x9b0 fs/exec.c:2013 call_usermodehelper_exec_async+0x22f/0x370 kernel/umh.c:112 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 __vunmap+0x8d4/0xa20 mm/vmalloc.c:2621 free_work+0x57/0x80 mm/vmalloc.c:95 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Memory state around the buggy address: ffff888024203f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888024204000: fa fb fb fb fb fb fb fb fb fb fc fc fc fc fa fb >ffff888024204080: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb ^ ffff888024204100: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb ffff888024204180: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb ==================================================================