EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop0): 1 truncate cleaned up EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data+0x1c0/0x2a0 fs/ext4/inline.c:209 Read of size 68 at addr ffff888025899c80 by task syz.0.17/5924 CPU: 0 PID: 5924 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xa8/0x210 mm/kasan/report.c:468 kasan_report+0x117/0x150 mm/kasan/report.c:581 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x241/0x290 mm/kasan/generic.c:187 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 ext4_read_inline_data+0x1c0/0x2a0 fs/ext4/inline.c:209 ext4_convert_inline_data_nolock+0x138/0x730 fs/ext4/inline.c:1214 ext4_try_add_inline_entry+0x73c/0xa70 fs/ext4/inline.c:1340 ext4_add_entry+0x5cc/0xd90 fs/ext4/namei.c:2458 ext4_mkdir+0x524/0xc90 fs/ext4/namei.c:3081 vfs_mkdir+0x2a5/0x470 fs/namei.c:4121 do_mkdirat+0x1dc/0x450 fs/namei.c:4144 __do_sys_mkdirat fs/namei.c:4159 [inline] __se_sys_mkdirat fs/namei.c:4157 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f3e82b9bcc7 Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8f21def8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007fff8f21df80 RCX: 00007f3e82b9bcc7 RDX: 00000000000001ff RSI: 0000200000000080 RDI: 00000000ffffff9c RBP: 0000200000000140 R08: 0000200000000080 R09: 0000000000000000 R10: 0000200000000140 R11: 0000000000000246 R12: 0000200000000080 R13: 00007fff8f21df40 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 1: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:53 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:767 slab_alloc_node mm/slub.c:3495 [inline] slab_alloc mm/slub.c:3503 [inline] __kmem_cache_alloc_lru mm/slub.c:3510 [inline] kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xe5/0x7f0 fs/kernfs/dir.c:624 kernfs_new_node+0x14c/0x260 fs/kernfs/dir.c:700 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x237/0x2f0 fs/sysfs/file.c:294 sysfs_merge_group+0x184/0x320 fs/sysfs/group.c:346 dev_pm_qos_expose_flags+0x1c9/0x2a0 drivers/base/power/qos.c:812 usb_hub_create_port_device+0x6c9/0xbc0 drivers/usb/core/port.c:798 hub_configure drivers/usb/core/hub.c:1708 [inline] hub_probe+0x26b3/0x37d0 drivers/usb/core/hub.c:1975 usb_probe_interface+0x5c2/0xaf0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x247/0xae0 drivers/base/dd.c:718 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:880 driver_probe_device+0x4f/0x420 drivers/base/dd.c:910 __device_attach_driver+0x2ca/0x510 drivers/base/dd.c:1038 bus_for_each_drv+0x252/0x2e0 drivers/base/bus.c:459 __device_attach+0x2c1/0x420 drivers/base/dd.c:1110 bus_probe_device+0x180/0x260 drivers/base/bus.c:580 device_add+0x87c/0xc40 drivers/base/core.c:3700 usb_set_configuration+0x1ad0/0x2150 drivers/usb/core/message.c:2265 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:238 usb_probe_device+0x12a/0x260 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x247/0xae0 drivers/base/dd.c:718 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:880 driver_probe_device+0x4f/0x420 drivers/base/dd.c:910 __device_attach_driver+0x2ca/0x510 drivers/base/dd.c:1038 bus_for_each_drv+0x252/0x2e0 drivers/base/bus.c:459 __device_attach+0x2c1/0x420 drivers/base/dd.c:1110 bus_probe_device+0x180/0x260 drivers/base/bus.c:580 device_add+0x87c/0xc40 drivers/base/core.c:3700 usb_new_device+0x995/0x1550 drivers/usb/core/hub.c:2660 register_root_hub+0x255/0x540 drivers/usb/core/hcd.c:994 usb_add_hcd+0xa34/0xe80 drivers/usb/core/hcd.c:2967 vhci_hcd_probe+0x144/0x370 drivers/usb/usbip/vhci_hcd.c:1387 platform_probe+0x13b/0x1c0 drivers/base/platform.c:1376 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x247/0xae0 drivers/base/dd.c:718 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:880 driver_probe_device+0x4f/0x420 drivers/base/dd.c:910 __device_attach_driver+0x2ca/0x510 drivers/base/dd.c:1038 bus_for_each_drv+0x252/0x2e0 drivers/base/bus.c:459 __device_attach+0x2c1/0x420 drivers/base/dd.c:1110 bus_probe_device+0x180/0x260 drivers/base/bus.c:580 device_add+0x87c/0xc40 drivers/base/core.c:3700 platform_device_add+0x4c3/0x830 drivers/base/platform.c:716 vhci_hcd_init+0x3cb/0x500 drivers/usb/usbip/vhci_hcd.c:1569 do_one_initcall+0x242/0x790 init/main.c:1249 do_initcall_level+0x13d/0x1f0 init/main.c:1311 do_initcalls+0x69/0xd0 init/main.c:1327 kernel_init_freeable+0x3d9/0x560 init/main.c:1564 kernel_init+0x1d/0x1c0 init/main.c:1454 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 The buggy address belongs to the object at ffff888025899ba0 which belongs to the cache kernfs_node_cache of size 184 The buggy address is located 40 bytes to the right of allocated 184-byte region [ffff888025899ba0, ffff888025899c58) The buggy address belongs to the physical page: page:ffffea0000962640 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x25899 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888019e4ddc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 9625837345, free_ts 8616778959 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1582 prep_new_page mm/page_alloc.c:1589 [inline] get_page_from_freelist+0x2181/0x22a0 mm/page_alloc.c:3221 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4501 alloc_page_interleave+0x24/0x1e0 mm/mempolicy.c:2118 alloc_slab_page+0x5d/0x180 mm/slub.c:1881 allocate_slab mm/slub.c:2028 [inline] new_slab+0x87/0x2d0 mm/slub.c:2081 ___slab_alloc+0xc5c/0x12f0 mm/slub.c:3253 __slab_alloc mm/slub.c:3339 [inline] __slab_alloc_node mm/slub.c:3392 [inline] slab_alloc_node mm/slub.c:3485 [inline] slab_alloc mm/slub.c:3503 [inline] __kmem_cache_alloc_lru mm/slub.c:3510 [inline] kmem_cache_alloc+0x109/0x2c0 mm/slub.c:3519 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xe5/0x7f0 fs/kernfs/dir.c:624 kernfs_new_node+0x14c/0x260 fs/kernfs/dir.c:700 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x237/0x2f0 fs/sysfs/file.c:294 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x431/0xd10 fs/sysfs/group.c:152 internal_create_groups fs/sysfs/group.c:192 [inline] sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:218 device_add_groups drivers/base/core.c:2786 [inline] device_add_attrs+0x1b2/0x830 drivers/base/core.c:2906 device_add+0x51a/0xc40 drivers/base/core.c:3639 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1182 [inline] free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2459 vfree+0x1a7/0x340 mm/vmalloc.c:2868 delayed_vfree_work+0x55/0x80 mm/vmalloc.c:2788 process_one_work kernel/workqueue.c:2653 [inline] process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Memory state around the buggy address: ffff888025899b80: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff888025899c00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc >ffff888025899c80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888025899d00: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ffff888025899d80: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================