jfsCommit: attempt to access beyond end of device loop0: rw=8388608, sector=160, nr_sectors = 8 limit=64 Read error 10 at 0x4000 read_mapping_page failed! jfsCommit: attempt to access beyond end of device loop0: rw=8388608, sector=160, nr_sectors = 8 limit=64 Read error 10 at 0x4000 read_mapping_page failed! jfsCommit: attempt to access beyond end of device loop0: rw=8388608, sector=160, nr_sectors = 8 limit=64 Read error 10 at 0x4000 read_mapping_page failed! jfsCommit: attempt to access beyond end of device loop0: rw=8388608, sector=160, nr_sectors = 8 limit=64 Read error 10 at 0x4000 read_mapping_page failed! Read error 10 at 0x4000 read_mapping_page failed! BUG: spinlock bad magic on CPU#0, jfsCommit/102 ================================================================== BUG: KASAN: slab-use-after-free in string_nocheck lib/vsprintf.c:654 [inline] BUG: KASAN: slab-use-after-free in string+0x231/0x2b0 lib/vsprintf.c:736 Read of size 1 at addr ffff8880461549d0 by task jfsCommit/102 CPU: 0 UID: 0 PID: 102 Comm: jfsCommit Not tainted syzkaller #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_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 string_nocheck lib/vsprintf.c:654 [inline] string+0x231/0x2b0 lib/vsprintf.c:736 vsnprintf+0x739/0xee0 lib/vsprintf.c:2947 vprintk_store+0x3ac/0xcc0 kernel/printk/printk.c:2255 vprintk_emit+0x187/0x550 kernel/printk/printk.c:2402 _printk+0xcf/0x120 kernel/printk/printk.c:2451 spin_dump+0x102/0x1a0 kernel/locking/spinlock_debug.c:64 spin_bug kernel/locking/spinlock_debug.c:78 [inline] debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x1ca/0x290 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x4c/0x60 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:124 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline] release_metapage+0x13c/0xac0 fs/jfs/jfs_metapage.c:871 xtTruncate+0xe84/0x2e70 fs/jfs/jfs_xtree.c:-1 jfs_free_zero_link+0x33a/0x4a0 fs/jfs/namei.c:759 jfs_evict_inode+0x363/0x440 fs/jfs/inode.c:159 evict+0x5f4/0xae0 fs/inode.c:837 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline] jfs_lazycommit+0x43f/0xa90 fs/jfs/jfs_txnmgr.c:2734 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Allocated by task 5334: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:339 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:365 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_lru_noprof+0x36c/0x6e0 mm/slub.c:5282 jfs_alloc_inode+0x28/0x70 fs/jfs/super.c:105 alloc_inode+0x6a/0x1b0 fs/inode.c:346 iget_locked+0x131/0x6a0 fs/inode.c:1470 jfs_iget+0x24/0x470 fs/jfs/inode.c:29 jfs_lookup+0x1c5/0x380 fs/jfs/namei.c:1469 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1747 __start_renaming+0x1db/0x410 fs/namei.c:3818 do_renameat2+0x399/0x8e0 fs/namei.c:6022 __do_sys_rename fs/namei.c:6090 [inline] __se_sys_rename fs/namei.c:6088 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:6088 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5334: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6670 [inline] kmem_cache_free+0x197/0x620 mm/slub.c:6781 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xc8e/0x1720 kernel/rcu/tree.c:2857 handle_softirqs+0x22b/0x7c0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x60/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556 __call_rcu_common kernel/rcu/tree.c:3119 [inline] call_rcu+0xee/0x890 kernel/rcu/tree.c:3239 destroy_inode fs/inode.c:401 [inline] evict+0x931/0xae0 fs/inode.c:861 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline] jfs_lazycommit+0x43f/0xa90 fs/jfs/jfs_txnmgr.c:2734 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x510/0xa50 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 ffff888046154940 which belongs to the cache jfs_ip of size 2216 The buggy address is located 144 bytes inside of freed 2216-byte region [ffff888046154940, ffff8880461551e8) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x46150 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff8880407c6001 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff888031bd6dc0 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff8880407c6001 head: 04fff00000000040 ffff888031bd6dc0 dead000000000122 0000000000000000 head: 0000000000000000 00000000800d000d 00000000f5000000 ffff8880407c6001 head: 04fff00000000003 ffffea0001185401 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_RECLAIMABLE|__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5334, tgid 5333 (syz.0.0), ts 76243566251, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x234/0x290 mm/page_alloc.c:1846 prep_new_page mm/page_alloc.c:1854 [inline] get_page_from_freelist+0x24e0/0x2580 mm/page_alloc.c:3915 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5210 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2486 alloc_slab_page mm/slub.c:3075 [inline] allocate_slab+0x86/0x3b0 mm/slub.c:3248 new_slab mm/slub.c:3302 [inline] ___slab_alloc+0xe53/0x1820 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_lru_noprof+0x3fe/0x6e0 mm/slub.c:5282 jfs_alloc_inode+0x28/0x70 fs/jfs/super.c:105 alloc_inode+0x6a/0x1b0 fs/inode.c:346 new_inode+0x22/0x170 fs/inode.c:1175 jfs_fill_super+0x569/0xd80 fs/jfs/super.c:511 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691 vfs_get_tree+0x92/0x2a0 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3712 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4201 page_owner free stack trace missing Memory state around the buggy address: ffff888046154880: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff888046154900: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff888046154980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888046154a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888046154a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================