------------[ cut here ]------------ WARNING: CPU: 0 PID: 11672 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 Modules linked in: CPU: 0 PID: 11672 Comm: syz-executor.4 Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 lr : kfree+0xf8/0x19c mm/slab_common.c:1013 sp : ffff8000259674e0 x29: ffff8000259674e0 x28: ffff0000dfdd52f0 x27: ffff00014581d5a4 x26: dfff800000000000 x25: 0000000000000020 x24: ffff0000d6b43900 x23: ffff0000d6b43400 x22: 0000000000000000 x21: ffff8000088092a0 x20: ffff00014581d5a4 x19: fffffc0005160740 x18: ffff800025966e80 x17: ffff800015c7d000 x16: ffff8000123165a4 x15: ffff800008a6a3f8 x14: ffff800008a69fc8 x13: ffff800008062fb8 x12: 0000000000000003 x11: 0000000000040000 x10: 000000000000c4c7 x9 : 05ffc0000000203a x8 : ffff8000187c1000 x7 : ffff800008063224 x6 : ffff800008063434 x5 : ffff0000cc1b3a68 x4 : ffff8000259672b0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff00014581d5a4 x0 : fffffc0005160740 Call trace: free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 kfree+0xf8/0x19c 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+0x448/0x848 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+0x4c/0x15c 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: 4414 hardirqs last enabled at (4413): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:242 hardirqs last disabled at (4414): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4150): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4148): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000002462dd8e ================================================================== BUG: KASAN: invalid-free in kfree+0xf8/0x19c mm/slab_common.c:1013 Free of addr ffff00014581d5a4 by task syz-executor.4/11672 CPU: 0 PID: 11672 Comm: syz-executor.4 Tainted: G W 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __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+0x64/0x12c mm/slab_common.c:939 kfree+0xf8/0x19c 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+0x448/0x848 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+0x4c/0x15c 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:00000000071c9094 refcount:2 mapcount:0 mapping:00000000b68711b5 index:0x1 pfn:0x18581d memcg:ffff0000d27e6000 aops:def_blk_aops ino:700004 flags: 0x5ffc0000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc0000002203e fffffc0003225148 fffffc0005c33988 ffff0000c0538810 raw: 0000000000000001 ffff00013e96e740 00000002ffffffff ffff0000d27e6000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00014581d480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00014581d500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00014581d580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff00014581d600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00014581d680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================