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. ======================================================= overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. ================================================================== BUG: KASAN: slab-use-after-free in drop_metapage fs/jfs/jfs_metapage.c:311 [inline] BUG: KASAN: slab-use-after-free in release_metapage+0x760/0xac0 fs/jfs/jfs_metapage.c:892 Read of size 8 at addr ffff888012785028 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 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xba/0x230 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 drop_metapage fs/jfs/jfs_metapage.c:311 [inline] release_metapage+0x760/0xac0 fs/jfs/jfs_metapage.c:892 write_metapage fs/jfs/jfs_metapage.h:75 [inline] flush_metapage fs/jfs/jfs_metapage.h:81 [inline] ea_write+0x662/0xde0 fs/jfs/xattr.c:280 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0x944/0x1160 fs/jfs/xattr.c:792 __jfs_xattr_set+0xda/0x170 fs/jfs/xattr.c:941 __vfs_setxattr+0x43c/0x480 fs/xattr.c:200 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234 vfs_setxattr+0x16a/0x2e0 fs/xattr.c:321 ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline] ovl_check_setxattr+0x13f/0x310 fs/overlayfs/util.c:895 ovl_set_impure+0x113/0x190 fs/overlayfs/util.c:918 ovl_do_copy_up fs/overlayfs/copy_up.c:978 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1189 [inline] ovl_copy_up_flags+0xf69/0x3a40 fs/overlayfs/copy_up.c:1243 ovl_open+0x140/0x300 fs/overlayfs/file.c:210 do_dentry_open+0x7ce/0x1420 fs/open.c:962 vfs_open+0x3b/0x340 fs/open.c:1094 dentry_open+0x61/0xa0 fs/open.c:1117 ima_calc_file_hash+0x183/0x17f0 security/integrity/ima/ima_crypto.c:553 ima_collect_measurement+0x48b/0x930 security/integrity/ima/ima_api.c:293 process_measurement+0x12e0/0x1cb0 security/integrity/ima/ima_main.c:406 ima_file_check+0xdf/0x130 security/integrity/ima/ima_main.c:663 security_file_post_open+0xb3/0x260 security/security.c:2652 do_open fs/namei.c:4639 [inline] path_openat+0x34cb/0x3e20 fs/namei.c:4796 do_filp_open+0x22d/0x490 fs/namei.c:4823 do_sys_openat2+0x12f/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa3b459aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa3b5415028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa3b4815fa0 RCX: 00007fa3b459aeb9 RDX: 0000000000020863 RSI: 0000200000000100 RDI: ffffffffffffff9c RBP: 00007fa3b4608c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa3b4816038 R14: 00007fa3b4815fa0 R15: 00007fff0ca18de8 Allocated by task 5321: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x370/0x6e0 mm/slub.c:5270 mempool_alloc_noprof+0x1ce/0x300 mm/mempool.c:567 alloc_metapage fs/jfs/jfs_metapage.c:264 [inline] __get_metapage+0x50c/0xde0 fs/jfs/jfs_metapage.c:760 ea_write+0x5f0/0xde0 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0x944/0x1160 fs/jfs/xattr.c:792 __jfs_xattr_set+0xda/0x170 fs/jfs/xattr.c:941 __vfs_setxattr+0x43c/0x480 fs/xattr.c:200 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234 vfs_setxattr+0x16a/0x2e0 fs/xattr.c:321 ovl_do_setxattr fs/overlayfs/overlayfs.h:317 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:329 [inline] ovl_check_setxattr+0x13f/0x310 fs/overlayfs/util.c:895 ovl_set_impure+0x113/0x190 fs/overlayfs/util.c:918 ovl_do_copy_up fs/overlayfs/copy_up.c:978 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1189 [inline] ovl_copy_up_flags+0xf69/0x3a40 fs/overlayfs/copy_up.c:1243 ovl_open+0x140/0x300 fs/overlayfs/file.c:210 do_dentry_open+0x7ce/0x1420 fs/open.c:962 vfs_open+0x3b/0x340 fs/open.c:1094 dentry_open+0x61/0xa0 fs/open.c:1117 ima_calc_file_hash+0x183/0x17f0 security/integrity/ima/ima_crypto.c:553 ima_collect_measurement+0x48b/0x930 security/integrity/ima/ima_api.c:293 process_measurement+0x12e0/0x1cb0 security/integrity/ima/ima_main.c:406 ima_file_check+0xdf/0x130 security/integrity/ima/ima_main.c:663 security_file_post_open+0xb3/0x260 security/security.c:2652 do_open fs/namei.c:4639 [inline] path_openat+0x34cb/0x3e20 fs/namei.c:4796 do_filp_open+0x22d/0x490 fs/namei.c:4823 do_sys_openat2+0x12f/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1447 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 74: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6674 [inline] kmem_cache_free+0x195/0x610 mm/slub.c:6785 mempool_free+0xec/0x130 mm/mempool.c:712 free_metapage fs/jfs/jfs_metapage.c:279 [inline] metapage_release_folio+0x40e/0x540 fs/jfs/jfs_metapage.c:636 shrink_folio_list+0x2164/0x5160 mm/vmscan.c:1484 evict_folios+0x4795/0x5880 mm/vmscan.c:4711 try_to_shrink_lruvec+0x88b/0xb20 mm/vmscan.c:4874 shrink_one+0x25c/0x710 mm/vmscan.c:4919 shrink_many mm/vmscan.c:4982 [inline] lru_gen_shrink_node mm/vmscan.c:5060 [inline] shrink_node+0x2f8b/0x35f0 mm/vmscan.c:6047 kswapd_shrink_node mm/vmscan.c:6901 [inline] balance_pgdat mm/vmscan.c:7084 [inline] kswapd+0x144c/0x2800 mm/vmscan.c:7354 kthread+0x726/0x8b0 kernel/kthread.c:463 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 The buggy address belongs to the object at ffff888012785000 which belongs to the cache jfs_mp of size 184 The buggy address is located 40 bytes inside of freed 184-byte region [ffff888012785000, ffff8880127850b8) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12785 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff8880317eac80 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 5321, tgid 5320 (syz.0.0), ts 75369212612, free_ts 75363501719 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x228/0x280 mm/page_alloc.c:1884 prep_new_page mm/page_alloc.c:1892 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3945 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5240 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2486 alloc_slab_page mm/slub.c:3075 [inline] allocate_slab+0x86/0x3a0 mm/slub.c:3248 new_slab mm/slub.c:3302 [inline] ___slab_alloc+0xd82/0x1760 mm/slub.c:4656 __slab_alloc+0x65/0x100 mm/slub.c:4779 __slab_alloc_node mm/slub.c:4855 [inline] slab_alloc_node mm/slub.c:5251 [inline] kmem_cache_alloc_noprof+0x3fe/0x6e0 mm/slub.c:5270 mempool_alloc_noprof+0x1ce/0x300 mm/mempool.c:567 alloc_metapage fs/jfs/jfs_metapage.c:264 [inline] __get_metapage+0x50c/0xde0 fs/jfs/jfs_metapage.c:760 ea_write+0x5f0/0xde0 fs/jfs/xattr.c:256 ea_put fs/jfs/xattr.c:626 [inline] __jfs_setxattr+0x944/0x1160 fs/jfs/xattr.c:792 __jfs_xattr_set+0xda/0x170 fs/jfs/xattr.c:941 __vfs_setxattr+0x43c/0x480 fs/xattr.c:200 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234 vfs_setxattr+0x16a/0x2e0 fs/xattr.c:321 page last free pid 5321 tgid 5320 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xbf8/0xd70 mm/page_alloc.c:2973 vfree+0x25a/0x400 mm/vmalloc.c:3466 bpf_check+0x167eb/0x1c4c0 kernel/bpf/verifier.c:25394 bpf_prog_load+0x1484/0x1ae0 kernel/bpf/syscall.c:3088 __sys_bpf+0x570/0x920 kernel/bpf/syscall.c:6164 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888012784f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888012784f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888012785000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888012785080: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc ffff888012785100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================