------------[ cut here ]------------ WARNING: CPU: 1 PID: 6775 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x138 mm/slab_common.c:936 Modules linked in: CPU: 1 PID: 6775 Comm: syz-executor.3 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 : ffff80001f9274e0 x29: ffff80001f9274e0 x28: ffff00012c2802b0 x27: ffff00012f5885a4 x26: dfff800000000000 x25: 0000000000000020 x24: ffff0000d9a15600 x23: ffff0000d9a15d00 x22: 0000000000000000 x21: ffff80000880f0b4 x20: ffff00012f5885a4 x19: fffffc0004bd6200 x18: ffff80001f926e80 x17: 0000000000000000 x16: ffff800012328c14 x15: ffff800008a711b0 x14: ffff800008a70d80 x13: ffff8000080631f0 x12: 0000000000040000 x11: 0000000000007d9c x10: ffff8000261fa000 x9 : 05ffc0000000203a x8 : ffff8000187d1000 x7 : ffff80000806345c x6 : ffff80000806366c x5 : ffff0000c176cf28 x4 : ffff80001f9272b0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff00012f5885a4 x0 : fffffc0004bd6200 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: 4850 hardirqs last enabled at (4849): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:242 hardirqs last disabled at (4850): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4730): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4728): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000000db0b7d1 ================================================================== BUG: KASAN: invalid-free in kfree+0x104/0x1a8 mm/slab_common.c:1013 Free of addr ffff00012f5885a4 by task syz-executor.3/6775 CPU: 1 PID: 6775 Comm: syz-executor.3 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:00000000badc7186 refcount:2 mapcount:0 mapping:000000006963e949 index:0x1 pfn:0x16f588 memcg:ffff0000d5e3c000 aops:def_blk_aops ino:700003 flags: 0x5ffc0000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc0000002203e fffffc00035a9bc8 fffffc0004ccf6c8 ffff0000c0483f10 raw: 0000000000000001 ffff0000ddbff0e8 00000002ffffffff ffff0000d5e3c000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00012f588480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00012f588500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00012f588580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff00012f588600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00012f588680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================