------------[ cut here ]------------ WARNING: CPU: 1 PID: 12351 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x138 mm/slab_common.c:936 Modules linked in: CPU: 1 PID: 12351 Comm: syz-executor.3 Not tainted 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : free_large_kmalloc+0x34/0x138 mm/slab_common.c:936 lr : kfree+0x104/0x1a8 mm/slab_common.c:1013 sp : ffff800021f174e0 x29: ffff800021f174e0 x28: ffff00012d8e48e8 x27: ffff00013eda25a4 x26: dfff800000000000 x25: 0000000000000020 x24: ffff0000d8105a00 x23: ffff0000d8105000 x22: 0000000000000000 x21: ffff80000880e804 x20: ffff00013eda25a4 x19: fffffc0004fb6880 x18: ffff800021f16e80 x17: ffff800015b3d000 x16: ffff8000122e1788 x15: ffff800008a6fd14 x14: ffff800008a6f8e4 x13: ffff800008063218 x12: 0000000000000003 x11: ff8080000809a054 x10: 0000000000000000 x9 : 05ffc0000000203a x8 : ffff800018539000 x7 : ffff800008063484 x6 : ffff800008063694 x5 : ffff0000cb6795e8 x4 : ffff800021f172b0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff00013eda25a4 x0 : fffffc0004fb6880 Call trace: free_large_kmalloc+0x34/0x138 mm/slab_common.c:936 kfree+0x104/0x1a8 mm/slab_common.c:1013 kvfree+0x40/0x50 mm/util.c:649 ext4_xattr_move_to_block fs/ext4/xattr.c:2680 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2743 [inline] ext4_expand_extra_isize_ea+0xcec/0x16b4 fs/ext4/xattr.c:2835 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5960 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6003 [inline] __ext4_mark_inode_dirty+0x460/0x85c fs/ext4/inode.c:6081 __ext4_unlink+0x768/0x998 fs/ext4/namei.c:3255 ext4_unlink+0x1b4/0x6a0 fs/ext4/namei.c:3298 vfs_unlink+0x2f0/0x508 fs/namei.c:4250 do_unlinkat+0x4c8/0x82c fs/namei.c:4316 __do_sys_unlinkat fs/namei.c:4359 [inline] __se_sys_unlinkat fs/namei.c:4352 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4352 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 4994 hardirqs last enabled at (4993): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:242 hardirqs last disabled at (4994): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4756): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4754): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000004da339b2 ================================================================== BUG: KASAN: invalid-free in kfree+0x104/0x1a8 mm/slab_common.c:1013 Free of addr ffff00013eda25a4 by task syz-executor.3/12351 CPU: 1 PID: 12351 Comm: syz-executor.3 Tainted: G W 6.3.0-rc3-syzkaller-ge8d018dd0257 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:319 [inline] print_report+0x174/0x514 mm/kasan/report.c:430 kasan_report_invalid_free+0xc4/0x114 mm/kasan/report.c:501 __kasan_kfree_large+0xa4/0xc0 mm/kasan/common.c:272 kasan_kfree_large include/linux/kasan.h:170 [inline] free_large_kmalloc+0x70/0x138 mm/slab_common.c:939 kfree+0x104/0x1a8 mm/slab_common.c:1013 kvfree+0x40/0x50 mm/util.c:649 ext4_xattr_move_to_block fs/ext4/xattr.c:2680 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2743 [inline] ext4_expand_extra_isize_ea+0xcec/0x16b4 fs/ext4/xattr.c:2835 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5960 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6003 [inline] __ext4_mark_inode_dirty+0x460/0x85c fs/ext4/inode.c:6081 __ext4_unlink+0x768/0x998 fs/ext4/namei.c:3255 ext4_unlink+0x1b4/0x6a0 fs/ext4/namei.c:3298 vfs_unlink+0x2f0/0x508 fs/namei.c:4250 do_unlinkat+0x4c8/0x82c fs/namei.c:4316 __do_sys_unlinkat fs/namei.c:4359 [inline] __se_sys_unlinkat fs/namei.c:4352 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4352 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 The buggy address belongs to the physical page: page:00000000e908e67b refcount:2 mapcount:0 mapping:000000000b2fd6ab index:0x1 pfn:0x17eda2 memcg:ffff00012bf7e000 aops:def_blk_aops ino:700003 flags: 0x5ffc0000000203a(referenced|dirty|lru|active|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc0000000203a fffffc000353ef88 fffffc000503eb08 ffff0000c0494a10 raw: 0000000000000001 ffff00012afef910 00000002ffffffff ffff00012bf7e000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00013eda2480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00013eda2500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00013eda2580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff00013eda2600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00013eda2680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================