------------[ cut here ]------------ WARNING: CPU: 0 PID: 7365 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 Modules linked in: CPU: 0 PID: 7365 Comm: syz-executor.0 Not tainted 6.3.0-rc6-syzkaller-g1f5b16c51aef #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+0x34/0x12c mm/slab_common.c:936 lr : kfree+0xf8/0x19c mm/slab_common.c:1013 sp : ffff8000202274e0 x29: ffff8000202274e0 x28: ffff0000ddf76700 x27: ffff00013f91c5a4 x26: dfff800000000000 x25: 0000000000000020 x24: ffff0000c7743e00 x23: ffff0000c1958300 x22: 0000000000000000 x21: ffff800008808284 x20: ffff00013f91c5a4 x19: fffffc0004fe4700 x18: ffff800020227100 x17: ffff800015c7d000 x16: ffff80001231a888 x15: ffff800008a6d3dc x14: ffff800008a6cfac x13: ffff800008063084 x12: 0000000000000003 x11: 0000000000040000 x10: 0000000000008646 x9 : 05ffc0000000203a x8 : ffff8000187c1000 x7 : ffff8000080632f0 x6 : ffff800008063500 x5 : ffff0000da241a38 x4 : ffff8000202272b0 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff00013f91c5a4 x0 : fffffc0004fe4700 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: 4870 hardirqs last enabled at (4869): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:242 hardirqs last disabled at (4870): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4734): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (4734): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:600 softirqs last disabled at (4711): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- object pointer: 0x00000000d5f05f40 ================================================================== BUG: KASAN: invalid-free in kfree+0xf8/0x19c mm/slab_common.c:1013 Free of addr ffff00013f91c5a4 by task syz-executor.0/7365 CPU: 1 PID: 7365 Comm: syz-executor.0 Tainted: G W 6.3.0-rc6-syzkaller-g1f5b16c51aef #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: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:00000000ccf755cf refcount:2 mapcount:0 mapping:00000000d375119f index:0x1 pfn:0x17f91c memcg:ffff0000de83a000 aops:def_blk_aops ino:700000 flags: 0x5ffc0000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc0000002203e fffffc00031503c8 fffffc000502a2c8 ffff0000c0543f10 raw: 0000000000000001 ffff0000e04e42b8 00000002ffffffff ffff0000de83a000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00013f91c480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00013f91c500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff00013f91c580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff00013f91c600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00013f91c680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================