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BUG: KASAN: slab-out-of-bounds in nsim_dev_health_break_write+0x1be/0x1e0 drivers/net/netdevsim/health.c:156
Read of size 1 at addr ffff888143b8da5f by task syz-executor820/5861

CPU: 1 UID: 0 PID: 5861 Comm: syz-executor820 Not tainted 6.13.0-rc2-syzkaller-00292-ga446e965a188 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 nsim_dev_health_break_write+0x1be/0x1e0 drivers/net/netdevsim/health.c:156
 full_proxy_write+0xfb/0x1b0 fs/debugfs/file.c:356
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df4dfc959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc98cb3018 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9df4dfc959
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc98cb3070
R13: 00007f9df4e493fe R14: 0000000000000003 R15: 00007ffc98cb3050
 </TASK>

Allocated by task 1:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kmalloc_noprof include/linux/slab.h:901 [inline]
 usb_control_msg+0xbd/0x4b0 drivers/usb/core/message.c:144
 usb_get_descriptor+0xc1/0x1b0 drivers/usb/core/message.c:794
 usb_get_configuration+0x3d8/0x55d0 drivers/usb/core/config.c:940
 usb_enumerate_device drivers/usb/core/hub.c:2483 [inline]
 usb_new_device+0x1124/0x1960 drivers/usb/core/hub.c:2621
 register_root_hub+0x299/0x730 drivers/usb/core/hcd.c:994
 usb_add_hcd+0xa77/0x16a0 drivers/usb/core/hcd.c:2970
 vhci_hcd_probe+0x1c2/0x490 drivers/usb/usbip/vhci_hcd.c:1380
 platform_probe+0xff/0x1f0 drivers/base/platform.c:1404
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3665
 platform_device_add+0x316/0x810 drivers/base/platform.c:716
 platform_device_register_full+0x4dc/0x690 drivers/base/platform.c:844
 vhci_hcd_init+0x1c7/0x380 drivers/usb/usbip/vhci_hcd.c:1536
 do_one_initcall+0x128/0x630 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x58f/0x8b0 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 1:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 usb_control_msg+0x39e/0x4b0 drivers/usb/core/message.c:160
 usb_get_descriptor+0xc1/0x1b0 drivers/usb/core/message.c:794
 usb_get_configuration+0x3d8/0x55d0 drivers/usb/core/config.c:940
 usb_enumerate_device drivers/usb/core/hub.c:2483 [inline]
 usb_new_device+0x1124/0x1960 drivers/usb/core/hub.c:2621
 register_root_hub+0x299/0x730 drivers/usb/core/hcd.c:994
 usb_add_hcd+0xa77/0x16a0 drivers/usb/core/hcd.c:2970
 vhci_hcd_probe+0x1c2/0x490 drivers/usb/usbip/vhci_hcd.c:1380
 platform_probe+0xff/0x1f0 drivers/base/platform.c:1404
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:459
 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:534
 device_add+0x114b/0x1a70 drivers/base/core.c:3665
 platform_device_add+0x316/0x810 drivers/base/platform.c:716
 platform_device_register_full+0x4dc/0x690 drivers/base/platform.c:844
 vhci_hcd_init+0x1c7/0x380 drivers/usb/usbip/vhci_hcd.c:1536
 do_one_initcall+0x128/0x630 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x58f/0x8b0 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff888143b8da40
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 23 bytes to the right of
 allocated 8-byte region [ffff888143b8da40, ffff888143b8da48)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x143b8d
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000000 ffff88801ac41500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080800080 00000001f5000000 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 0x52c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 10309131020, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xce2/0x1650 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __kmalloc_cache_noprof+0xf6/0x420 mm/slub.c:4324
 kmalloc_noprof include/linux/slab.h:901 [inline]
 usb_control_msg+0xbd/0x4b0 drivers/usb/core/message.c:144
 usb_get_status+0xdc/0x270 drivers/usb/core/message.c:1149
 usb_get_std_status include/linux/usb.h:1856 [inline]
 hub_configure drivers/usb/core/hub.c:1627 [inline]
 hub_probe+0x1749/0x3200 drivers/usb/core/hub.c:1965
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888143b8d900: 06 fc fc fc 06 fc fc fc 07 fc fc fc 06 fc fc fc
 ffff888143b8d980: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
>ffff888143b8da00: 00 fc fc fc fa fc fc fc fa fc fc fc 01 fc fc fc
                                                    ^
 ffff888143b8da80: fa fc fc fc 00 fc fc fc 00 fc fc fc 06 fc fc fc
 ffff888143b8db00: 06 fc fc fc 06 fc fc fc 00 fc fc fc fa fc fc fc
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