loop0: detected capacity change from 0 to 32768 ======================================================= 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. ======================================================= JFS: metapage_get_blocks failed ================================================================== BUG: KASAN: slab-use-after-free in release_metapage+0x5d8/0xa90 fs/jfs/jfs_metapage.c:777 Read of size 8 at addr ffff88805351c098 by task syz.0.0/5328 CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.15.0-rc1-syzkaller-00065-g3b07108ada81 #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 lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 release_metapage+0x5d8/0xa90 fs/jfs/jfs_metapage.c:777 write_metapage fs/jfs/jfs_metapage.h:75 [inline] flush_metapage fs/jfs/jfs_metapage.h:81 [inline] ea_write+0x693/0xe50 fs/jfs/xattr.c:280 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0xa05/0x1360 fs/jfs/xattr.c:792 __jfs_set_acl+0x12a/0x1b0 fs/jfs/acl.c:87 jfs_set_acl+0x2be/0x4d0 fs/jfs/acl.c:115 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x806/0xa70 fs/posix_acl.c:1133 do_set_acl+0xf4/0x180 fs/posix_acl.c:1278 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x355/0x480 fs/xattr.c:665 path_setxattrat+0x3f7/0x4c0 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:750 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd3e878d169 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:00007fd3e962e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007fd3e89a5fa0 RCX: 00007fd3e878d169 RDX: 0000200000000380 RSI: 0000200000000280 RDI: 0000200000000240 RBP: 00007fd3e880e730 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd3e89a5fa0 R15: 00007ffd1d8722d8 Allocated by task 5328: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_noprof+0x1e1/0x390 mm/slub.c:4207 mempool_alloc_noprof+0x199/0x5a0 mm/mempool.c:402 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline] __get_metapage+0x5f4/0xdc0 fs/jfs/jfs_metapage.c:652 ea_write+0x620/0xe50 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0xa05/0x1360 fs/jfs/xattr.c:792 __jfs_set_acl+0x12a/0x1b0 fs/jfs/acl.c:87 jfs_set_acl+0x2be/0x4d0 fs/jfs/acl.c:115 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x806/0xa70 fs/posix_acl.c:1133 do_set_acl+0xf4/0x180 fs/posix_acl.c:1278 do_setxattr fs/xattr.c:633 [inline] filename_setxattr+0x355/0x480 fs/xattr.c:665 path_setxattrat+0x3f7/0x4c0 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:750 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5329: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2389 [inline] slab_free mm/slub.c:4646 [inline] kmem_cache_free+0x197/0x410 mm/slub.c:4748 free_metapage fs/jfs/jfs_metapage.c:197 [inline] metapage_release_folio+0x412/0x540 fs/jfs/jfs_metapage.c:552 folio_invalidate mm/truncate.c:140 [inline] truncate_cleanup_folio+0x203/0x300 mm/truncate.c:160 truncate_inode_folio mm/truncate.c:175 [inline] truncate_inode_pages_range+0xcd4/0x10e0 mm/truncate.c:432 jfs_reconfigure+0x5ef/0x9d0 fs/jfs/super.c:406 reconfigure_super+0x43a/0x870 fs/super.c:1083 vfs_cmd_reconfigure fs/fsopen.c:262 [inline] vfs_fsconfig_locked fs/fsopen.c:291 [inline] __do_sys_fsconfig fs/fsopen.c:467 [inline] __se_sys_fsconfig+0xb5e/0xf40 fs/fsopen.c:344 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88805351c000 which belongs to the cache jfs_mp of size 184 The buggy address is located 152 bytes inside of freed 184-byte region [ffff88805351c000, ffff88805351c0b8) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5351c flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff8880334daa00 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080100010 00000000f5000000 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 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5328, tgid 5327 (syz.0.0), ts 85103802359, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1717 prep_new_page mm/page_alloc.c:1725 [inline] get_page_from_freelist+0x352b/0x36c0 mm/page_alloc.c:3652 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4934 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2459 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2623 new_slab mm/slub.c:2676 [inline] ___slab_alloc+0xc3b/0x1500 mm/slub.c:3862 __slab_alloc+0x58/0xa0 mm/slub.c:3952 __slab_alloc_node mm/slub.c:4027 [inline] slab_alloc_node mm/slub.c:4188 [inline] kmem_cache_alloc_noprof+0x270/0x390 mm/slub.c:4207 mempool_alloc_noprof+0x199/0x5a0 mm/mempool.c:402 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline] __get_metapage+0x5f4/0xdc0 fs/jfs/jfs_metapage.c:652 ea_write+0x620/0xe50 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0xa05/0x1360 fs/jfs/xattr.c:792 __jfs_set_acl+0x12a/0x1b0 fs/jfs/acl.c:87 jfs_set_acl+0x2be/0x4d0 fs/jfs/acl.c:115 set_posix_acl fs/posix_acl.c:954 [inline] vfs_set_acl+0x806/0xa70 fs/posix_acl.c:1133 do_set_acl+0xf4/0x180 fs/posix_acl.c:1278 page_owner free stack trace missing Memory state around the buggy address: ffff88805351bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88805351c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805351c080: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc ^ ffff88805351c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805351c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================