================================================================== BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x367/0x370 fs/xfs/xfs_inode_item.c:780 Read of size 8 at addr ffff88805776bd00 by task xfsaild/loop6/15177 CPU: 1 UID: 0 PID: 15177 Comm: xfsaild/loop6 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 xfs_inode_item_push+0x367/0x370 fs/xfs/xfs_inode_item.c:780 xfsaild_push_item fs/xfs/xfs_trans_ail.c:395 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:523 [inline] xfsaild+0xd69/0x3100 fs/xfs/xfs_trans_ail.c:705 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 15145: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x226/0x3d0 mm/slub.c:4175 xfs_inode_item_init+0x24/0xc0 fs/xfs/xfs_inode_item.c:875 xfs_trans_ijoin+0xfc/0x160 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_trans_alloc_inode+0x1d6/0x3a0 fs/xfs/xfs_trans.c:1105 xfs_attr_add_fork+0x1bb/0x330 fs/xfs/libxfs/xfs_attr.c:1014 xfs_attr_set+0xce8/0x1000 fs/xfs/libxfs/xfs_attr.c:1077 xfs_attr_change+0x373/0x500 fs/xfs/xfs_xattr.c:128 xfs_xattr_set+0x164/0x240 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x176/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x360 fs/xattr.c:321 do_setxattr+0x142/0x170 fs/xattr.c:636 filename_setxattr+0x16d/0x1d0 fs/xattr.c:665 path_setxattrat+0x1e0/0x290 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __x64_sys_lsetxattr+0xc9/0x140 fs/xattr.c:750 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 15171: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kmem_cache_free+0x152/0x4c0 mm/slub.c:4715 xfs_inode_free_callback+0x159/0x240 fs/xfs/xfs_icache.c:161 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0x7a0/0x14d0 kernel/rcu/tree.c:2823 handle_softirqs+0x216/0x8f0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 The buggy address belongs to the object at ffff88805776bcd0 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of freed 264-byte region [ffff88805776bcd0, ffff88805776bdd8) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5776b flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801e3f1780 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800c000c 00000001f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x52c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE), pid 6195, tgid 6188 (syz.5.62), ts 104029595216, free_ts 103842373860 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2c9/0x410 mm/slub.c:2642 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] kmem_cache_alloc_noprof+0xfa/0x3d0 mm/slub.c:4175 xfs_inode_item_init+0x24/0xc0 fs/xfs/xfs_inode_item.c:875 xfs_trans_ijoin+0xfc/0x160 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_icreate+0x10c/0x170 fs/xfs/xfs_inode.c:605 xfs_qm_qino_alloc+0x2d6/0x7f0 fs/xfs/xfs_qm.c:1032 xfs_qm_init_quotainos+0x50d/0x6c0 fs/xfs/xfs_qm.c:1873 xfs_qm_init_quotainfo+0xf4/0xb20 fs/xfs/xfs_qm.c:858 xfs_qm_mount_quotas+0x9c/0x6a0 fs/xfs/xfs_qm.c:1724 xfs_mountfs+0x1ed1/0x2230 fs/xfs/xfs_mount.c:1030 page last free pid 5199 tgid 5199 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0x661/0x1080 mm/page_alloc.c:2659 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x226/0x3d0 mm/slub.c:4175 getname_flags.part.0+0x4c/0x550 fs/namei.c:139 getname_flags+0x93/0xf0 include/linux/audit.h:322 do_readlinkat+0xb5/0x390 fs/stat.c:561 __do_sys_readlink fs/stat.c:599 [inline] __se_sys_readlink fs/stat.c:596 [inline] __x64_sys_readlink+0x78/0xc0 fs/stat.c:596 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88805776bc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805776bc80: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb >ffff88805776bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805776bd80: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ffff88805776be00: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================