================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline] BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x376/0x780 drivers/usb/core/hcd.c:774 Write of size 2 at addr ffff888012fdbb68 by task syz-executor.0/16269 CPU: 1 PID: 16269 Comm: syz-executor.0 Not tainted 5.16.0-rc2-next-20211124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x39/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:225 [inline] usb_hcd_poll_rh_status+0x376/0x780 drivers/usb/core/hcd.c:774 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:___slab_alloc+0x791/0xfe0 mm/slub.c:3088 Code: 48 89 df e8 51 9c ff ff 41 81 e5 00 02 00 00 0f 85 c0 04 00 00 9c 58 f6 c4 02 0f 85 73 05 00 00 4d 85 ed 74 01 fb 48 8b 45 c8 <65> 48 2b 04 25 28 00 00 00 0f 85 b1 06 00 00 48 8d 65 d0 4c 89 f0 RSP: 0018:ffffc90004577a70 EFLAGS: 00000206 RAX: 2fe12eef6fb7c700 RBX: ffff8880b9d3da00 RCX: 1ffffffff1b22391 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90004577b50 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e1b58 R11: 00000000ffffffff R12: 0000000000000001 R13: 0000000000000200 R14: ffff8880831e8000 R15: 000000000003da00 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109 slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] __kmalloc+0x2fb/0x340 mm/slub.c:4419 kmalloc include/linux/slab.h:595 [inline] tomoyo_realpath_from_path+0xc3/0x620 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x1d5/0x590 security/tomoyo/file.c:723 security_file_ioctl+0x50/0xb0 security/security.c:1541 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xb3/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f59d6dfdae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59d4373188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f59d6f10f60 RCX: 00007f59d6dfdae9 RDX: 0000000020001940 RSI: 000000000000890b RDI: 0000000000000005 RBP: 00007f59d6e57f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7b231e8f R14: 00007f59d4373300 R15: 0000000000022000 Allocated by task 16269: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:595 [inline] proc_do_submiturb+0x2a7d/0x3630 drivers/usb/core/devio.c:1816 proc_submiturb drivers/usb/core/devio.c:1975 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2671 [inline] usbdev_ioctl+0x692/0x36c0 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff888012fdbb68 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes inside of 8-byte region [ffff888012fdbb68, ffff888012fdbb70) The buggy address belongs to the page: page:ffffea00004bf6c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12fdb flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0000facfc0 dead000000000002 ffff888010c41280 raw: 0000000000000000 0000000080660066 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, ts 2264945058, free_ts 2225074279 prep_new_page mm/page_alloc.c:2419 [inline] get_page_from_freelist+0xa72/0x2f40 mm/page_alloc.c:4150 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5362 alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2037 alloc_pages+0x29f/0x300 mm/mempolicy.c:2187 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab mm/slub.c:1930 [inline] new_slab+0x32d/0x4a0 mm/slub.c:1993 ___slab_alloc+0x918/0xfe0 mm/slub.c:3022 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109 slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] __kmalloc+0x2fb/0x340 mm/slub.c:4419 acpi_ns_internalize_name drivers/acpi/acpica/nsutils.c:331 [inline] acpi_ns_internalize_name+0xf2/0x1a1 drivers/acpi/acpica/nsutils.c:312 acpi_ns_get_node_unlocked drivers/acpi/acpica/nsutils.c:666 [inline] acpi_ns_get_node_unlocked+0x1d8/0x278 drivers/acpi/acpica/nsutils.c:635 acpi_ns_get_node+0x4b/0x6a drivers/acpi/acpica/nsutils.c:726 acpi_ns_evaluate+0xd2/0x966 drivers/acpi/acpica/nseval.c:62 acpi_ut_evaluate_object+0xf1/0x3f6 drivers/acpi/acpica/uteval.c:60 acpi_ut_execute_power_methods+0xd5/0x1e0 drivers/acpi/acpica/uteval.c:288 acpi_get_object_info+0x4e3/0x9dd drivers/acpi/acpica/nsxfname.c:366 acpi_set_pnp_ids drivers/acpi/scan.c:1334 [inline] acpi_init_device_object+0xb9b/0x1a60 drivers/acpi/scan.c:1747 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1339 [inline] free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1390 free_unref_page_prepare mm/page_alloc.c:3310 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3389 qlink_free mm/kasan/quarantine.c:146 [inline] qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165 kasan_quarantine_remove_cache+0xd2/0xf0 mm/kasan/quarantine.c:338 kmem_cache_shrink+0x9/0x20 mm/slab_common.c:525 acpi_os_purge_cache+0x11/0x20 drivers/acpi/osl.c:1663 acpi_purge_cached_objects+0x9b/0xd0 drivers/acpi/acpica/utxface.c:239 acpi_initialize_objects+0x2b/0x95 drivers/acpi/acpica/utxfinit.c:250 acpi_bus_init drivers/acpi/bus.c:1236 [inline] acpi_init+0x1cd/0x971 drivers/acpi/bus.c:1323 do_one_initcall+0x103/0x650 init/main.c:1303 do_initcall_level init/main.c:1378 [inline] do_initcalls init/main.c:1394 [inline] do_basic_setup init/main.c:1413 [inline] kernel_init_freeable+0x6b1/0x73a init/main.c:1618 kernel_init+0x1a/0x1d0 init/main.c:1507 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff888012fdba00: fb fc fc fc fc fa fc fc fc fc fa fc fc fc fc fa ffff888012fdba80: fc fc fc fc fa fc fc fc fc fa fc fc fc fc fa fc >ffff888012fdbb00: fc fc fc 00 fc fc fc fc fa fc fc fc fc 01 fc fc ^ ffff888012fdbb80: fc fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc ffff888012fdbc00: fc fb fc fc fc fc fb fc fc fc fc fb fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 48 89 df mov %rbx,%rdi 3: e8 51 9c ff ff callq 0xffff9c59 8: 41 81 e5 00 02 00 00 and $0x200,%r13d f: 0f 85 c0 04 00 00 jne 0x4d5 15: 9c pushfq 16: 58 pop %rax 17: f6 c4 02 test $0x2,%ah 1a: 0f 85 73 05 00 00 jne 0x593 20: 4d 85 ed test %r13,%r13 23: 74 01 je 0x26 25: fb sti 26: 48 8b 45 c8 mov -0x38(%rbp),%rax * 2a: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax <-- trapping instruction 31: 00 00 33: 0f 85 b1 06 00 00 jne 0x6ea 39: 48 8d 65 d0 lea -0x30(%rbp),%rsp 3d: 4c 89 f0 mov %r14,%rax