Hello, syzbot found the following issue on: HEAD commit: fe3cfe869d5e Merge tag 'phy-fixes-6.6' of git://git.kernel.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=15db4635680000 kernel config: https://syzkaller.appspot.com/x/.config?x=b400c09b1315b112 dashboard link: https://syzkaller.appspot.com/bug?extid=01cf2dbcbe2022454388 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=170eb95d680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/57e585f5caff/disk-fe3cfe86.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d2904450b051/vmlinux-fe3cfe86.xz kernel image: https://storage.googleapis.com/syzbot-assets/8fb732d9bee9/bzImage-fe3cfe86.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/be380785486a/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+01cf2dbcbe2022454388@xxxxxxxxxxxxxxxxxxxxxxxxx jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: slab-use-after-free in jfs_evict_inode+0x4aa/0x4b0 fs/jfs/inode.c:155 Read of size 8 at addr ffff88806356f970 by task syz-executor.5/6182 CPU: 0 PID: 6182 Comm: syz-executor.5 Not tainted 6.6.0-rc6-syzkaller-00355-gfe3cfe869d5e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: <TASK> __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 jfs_evict_inode+0x4aa/0x4b0 fs/jfs/inode.c:155 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 diFreeSpecial+0x7a/0x110 fs/jfs/jfs_imap.c:549 jfs_mount+0x471/0x890 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556 mount_bdev+0x1f3/0x2e0 fs/super.c:1629 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 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: 0033:0x7fac16a7e1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fac178baee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fac178baf80 RCX: 00007fac16a7e1ea RDX: 0000000020002400 RSI: 0000000020000040 RDI: 00007fac178baf40 RBP: 0000000020002400 R08: 00007fac178baf80 R09: 0000000000000080 R10: 0000000000000080 R11: 0000000000000246 R12: 0000000020000040 R13: 00007fac178baf40 R14: 0000000000002332 R15: 0000000020002500 </TASK> Allocated by task 6182: 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/slab.c:3237 [inline] slab_alloc mm/slab.c:3246 [inline] __kmem_cache_alloc_lru mm/slab.c:3423 [inline] kmem_cache_alloc_lru+0x202/0x6d0 mm/slab.c:3439 alloc_inode_sb include/linux/fs.h:2868 [inline] jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105 alloc_inode+0x5d/0x220 fs/inode.c:259 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 diReadSpecial+0x51/0x6e0 fs/jfs/jfs_imap.c:423 jfs_mount+0x31e/0x890 fs/jfs/jfs_mount.c:166 jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556 mount_bdev+0x1f3/0x2e0 fs/super.c:1629 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 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 5231: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x138/0x190 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] __cache_free mm/slab.c:3370 [inline] __do_kmem_cache_free mm/slab.c:3557 [inline] kmem_cache_free+0x104/0x380 mm/slab.c:3582 i_callback+0x43/0x70 fs/inode.c:248 rcu_do_batch kernel/rcu/tree.c:2139 [inline] rcu_core+0x805/0x1bb0 kernel/rcu/tree.c:2403 __do_softirq+0x218/0x965 kernel/softirq.c:553 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 diFreeSpecial+0x7a/0x110 fs/jfs/jfs_imap.c:549 jfs_mount+0x424/0x890 fs/jfs/jfs_mount.c:191 jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556 mount_bdev+0x1f3/0x2e0 fs/super.c:1629 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 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 Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653 destroy_inode+0x129/0x1b0 fs/inode.c:314 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 jfs_fill_super+0x95c/0xd20 fs/jfs/super.c:607 mount_bdev+0x1f3/0x2e0 fs/super.c:1629 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 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 ffff88806356f5c0 which belongs to the cache jfs_ip of size 2240 The buggy address is located 944 bytes inside of freed 2240-byte region [ffff88806356f5c0, ffff88806356fe80) The buggy address belongs to the physical page: page:ffffea00018d5bc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806356ffff pfn:0x6356f memcg:ffff888028945f41 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0x1() raw: 00fff00000000800 ffff8881422a8700 ffffea00018d5c90 ffffea00018d6350 raw: ffff88806356ffff ffff88806356f5c0 0000000100000001 ffff888028945f41 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x342050(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE|__GFP_RECLAIMABLE), pid 5219, tgid 5216 (syz-executor.1), ts 145722879804, free_ts 145541609248 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426 __alloc_pages_node include/linux/gfp.h:237 [inline] kmem_getpages mm/slab.c:1356 [inline] cache_grow_begin+0x99/0x3a0 mm/slab.c:2550 cache_alloc_refill+0x294/0x3a0 mm/slab.c:2923 ____cache_alloc mm/slab.c:2999 [inline] ____cache_alloc mm/slab.c:2982 [inline] __do_cache_alloc mm/slab.c:3182 [inline] slab_alloc_node mm/slab.c:3230 [inline] slab_alloc mm/slab.c:3246 [inline] __kmem_cache_alloc_lru mm/slab.c:3423 [inline] kmem_cache_alloc_lru+0x566/0x6d0 mm/slab.c:3439 alloc_inode_sb include/linux/fs.h:2868 [inline] jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105 alloc_inode+0x5d/0x220 fs/inode.c:259 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 diReadSpecial+0x51/0x6e0 fs/jfs/jfs_imap.c:423 jfs_mount+0xe0/0x890 fs/jfs/jfs_mount.c:87 jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556 mount_bdev+0x1f3/0x2e0 fs/super.c:1629 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405 slab_destroy mm/slab.c:1608 [inline] slabs_destroy+0x85/0xc0 mm/slab.c:1628 cache_flusharray mm/slab.c:3341 [inline] ___cache_free+0x2b7/0x420 mm/slab.c:3404 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x4c/0x1b0 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x18e/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/slab.c:3237 [inline] __kmem_cache_alloc_node+0x163/0x470 mm/slab.c:3521 __do_kmalloc_node mm/slab_common.c:1025 [inline] __kmalloc+0x4f/0x100 mm/slab_common.c:1039 kmalloc_array include/linux/slab.h:636 [inline] kcalloc include/linux/slab.h:667 [inline] ext4_find_extent+0x958/0xce0 fs/ext4/extents.c:914 ext4_ext_map_blocks+0x26b/0x5b10 fs/ext4/extents.c:4101 ext4_map_blocks+0x844/0x1770 fs/ext4/inode.c:548 ext4_append+0x1fb/0x560 fs/ext4/namei.c:75 ext4_init_new_dir+0x220/0x4c0 fs/ext4/namei.c:2981 ext4_mkdir+0x316/0xb70 fs/ext4/namei.c:3027 vfs_mkdir+0x532/0x7e0 fs/namei.c:4121 Memory state around the buggy address: ffff88806356f800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88806356f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88806356f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88806356f980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88806356fa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
