------------[ cut here ]------------ WARNING: CPU: 0 PID: 9967 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x138 mm/slab_common.c:936 Modules linked in: CPU: 0 PID: 9967 Comm: syz-executor.0 Not tainted 6.3.0-rc5-syzkaller-g9a03cbd79d3a #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 : ffff8000215374e0 x29: ffff8000215374e0 x28: ffff0000e07420c8 x27: ffff000146d215a4 x26: dfff800000000000 x25: 0000000000000020 x24: ffff0000db2bf900 x23: ffff0000d33af500 x22: 0000000000000000 x21: ffff80000880f0b4 x20: ffff000146d215a4 x19: fffffc00051b4840 x18: ffff800021536e80 x17: ffff800015c8d000 x16: ffff800012328c14 x15: ffff800008a711b0 x14: ffff800008a70d80 x13: ffff8000080631f0 x12: 0000000000040000 x11: 000000000000febb x10: ffff80001e949000 x9 : 05ffc0000002203e x8 : ffff8000187d1000 x7 : ffff80000806345c x6 : ffff80000806366c x5 : ffff0000db19cc98 x4 : ffff8000215372b0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff000146d215a4 x0 : fffffc00051b4840 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: 5062 hardirqs last enabled at (5061): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:242 hardirqs last disabled at (5062): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4770): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4768): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x00000000775a7f62 ================================================================== BUG: KASAN: invalid-free in kfree+0x104/0x1a8 mm/slab_common.c:1013 Free of addr ffff000146d215a4 by task syz-executor.0/9967 CPU: 0 PID: 9967 Comm: syz-executor.0 Tainted: G W 6.3.0-rc5-syzkaller-g9a03cbd79d3a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x1b8/0x1e4 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:00000000e769ff83 refcount:2 mapcount:0 mapping:00000000837c911c index:0x1 pfn:0x186d21 memcg:ffff000133cfc000 aops:def_blk_aops ino:700000 flags: 0x5ffc0000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc0000002203e fffffc00034a8f08 fffffc00051fdfc8 ffff0000c0549310 raw: 0000000000000001 ffff0001325449f8 00000002ffffffff ffff000133cfc000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000146d21480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff000146d21500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff000146d21580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff000146d21600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff000146d21680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================