BUG: spinlock bad magic on CPU#0, jfsCommit/101 ================================================================== BUG: KASAN: slab-out-of-bounds in string_nocheck lib/vsprintf.c:646 [inline] BUG: KASAN: slab-out-of-bounds in string+0x218/0x2b0 lib/vsprintf.c:728 Read of size 1 at addr ffff888040b2c0b8 by task jfsCommit/101 CPU: 0 UID: 0 PID: 101 Comm: jfsCommit Not tainted 6.11.0-syzkaller-05442-g932d2d1fcb2b #0 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:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 string_nocheck lib/vsprintf.c:646 [inline] string+0x218/0x2b0 lib/vsprintf.c:728 vsnprintf+0x1101/0x1da0 lib/vsprintf.c:2824 vprintk_store+0x480/0x1160 kernel/printk/printk.c:2260 vprintk_emit+0x271/0xa10 kernel/printk/printk.c:2383 _printk+0xd5/0x120 kernel/printk/printk.c:2432 spin_dump kernel/locking/spinlock_debug.c:64 [inline] spin_bug+0x13b/0x1d0 kernel/locking/spinlock_debug.c:78 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x209/0x370 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105 unlock_metapage fs/jfs/jfs_metapage.c:39 [inline] release_metapage+0xb2/0x960 fs/jfs/jfs_metapage.c:763 xtTruncate+0x1006/0x3270 jfs_free_zero_link+0x46e/0x6e0 fs/jfs/namei.c:759 jfs_evict_inode+0x35f/0x440 fs/jfs/inode.c:153 evict+0x4e8/0x9b0 fs/inode.c:731 txUpdateMap+0x931/0xb10 fs/jfs/jfs_txnmgr.c:2367 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x49a/0xb80 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff888040b2c088 which belongs to the cache jfs_ip of size 2232 The buggy address is located 48 bytes inside of allocated 2232-byte region [ffff888040b2c088, ffff888040b2c940) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x40b28 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 04fff00000000040 ffff8880330903c0 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800d000d 00000001fdffffff 0000000000000000 head: 04fff00000000040 ffff8880330903c0 dead000000000122 0000000000000000 head: 0000000000000000 00000000800d000d 00000001fdffffff 0000000000000000 head: 04fff00000000003 ffffea000102ca01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 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_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 5098, tgid 5098 (syz-executor336), ts 75232262298, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500 prep_new_page mm/page_alloc.c:1508 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263 alloc_slab_page+0x6a/0x130 mm/slub.c:2413 allocate_slab+0x5a/0x2f0 mm/slub.c:2579 new_slab mm/slub.c:2632 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3819 __slab_alloc+0x58/0xa0 mm/slub.c:3909 __slab_alloc_node mm/slub.c:3962 [inline] slab_alloc_node mm/slub.c:4123 [inline] kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4154 jfs_alloc_inode+0x28/0x70 fs/jfs/super.c:105 alloc_inode fs/inode.c:263 [inline] new_inode_pseudo fs/inode.c:1110 [inline] new_inode+0x6e/0x310 fs/inode.c:1129 jfs_fill_super+0x408/0xc50 fs/jfs/super.c:544 mount_bdev+0x20a/0x2d0 fs/super.c:1679 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 page_owner free stack trace missing Memory state around the buggy address: ffff888040b2bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888040b2c000: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888040b2c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888040b2c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888040b2c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================