xpad 4-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19 xpad 4-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19 ================================================================== BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x299/0x370 kernel/locking/spinlock_debug.c:115 Read of size 4 at addr ffff888147b2a05c by task syz.1.1221/12851 CPU: 0 UID: 0 PID: 12851 Comm: syz.1.1221 Not tainted 6.12.0-syzkaller-10296-gaaf20f870da0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x299/0x370 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105 __usb_hcd_giveback_urb+0x4ff/0x6e0 drivers/usb/core/hcd.c:1653 dummy_timer+0x856/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1993 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1803 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x96/0x550 kernel/locking/lockdep.c:5817 Code: 81 4c 8d 64 24 40 49 c1 ec 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 04 2c 43 c7 44 2c 09 f2 f2 f2 00 43 c7 44 2c 11 f3 f3 f3 f3 <66> 43 c7 44 2c 15 f3 f3 43 c6 44 2c 17 f3 0f 1f 44 00 00 65 8b 05 RSP: 0018:ffffc9000cf7f100 EFLAGS: 00000a06 RAX: f2f2f200f1f1f1f1 RBX: 0000000000000140 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e93c4a0 RBP: ffffc9000cf7f250 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff9400029af29 R12: 1ffff920019efe28 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88813fffa680 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock_sched include/linux/rcupdate.h:941 [inline] pfn_valid+0x113/0x450 include/linux/mmzone.h:2048 page_table_check_clear+0x1e/0x550 mm/page_table_check.c:70 get_and_clear_full_ptes include/linux/pgtable.h:705 [inline] zap_present_folio_ptes mm/memory.c:1502 [inline] zap_present_ptes mm/memory.c:1585 [inline] zap_pte_range mm/memory.c:1627 [inline] zap_pmd_range mm/memory.c:1753 [inline] zap_pud_range mm/memory.c:1782 [inline] zap_p4d_range mm/memory.c:1803 [inline] unmap_page_range+0x2b41/0x4230 mm/memory.c:1824 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1914 exit_mmap+0x275/0xc40 mm/mmap.c:1667 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:570 do_exit+0x9b2/0x28e0 kernel/exit.c:925 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 get_signal+0x16b2/0x1750 kernel/signal.c:3016 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7579d80809 Code: Unable to access opcode bytes at 0x7f7579d807df. RSP: 002b:00007f757ab4f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f7579f45fa8 RCX: 00007f7579d80809 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7579f45fa8 RBP: 00007f7579f45fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7579f45fac R13: 0000000000000000 R14: 00007f757a06f950 R15: 00007f757a06fa38 Allocated by task 8690: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4314 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] xpad_probe+0x3c8/0x1b90 drivers/input/joystick/xpad.c:1999 usb_probe_interface+0x645/0xbb0 drivers/usb/core/driver.c:399 really_probe+0x2b8/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:459 __device_attach+0x333/0x520 drivers/base/dd.c:1030 bus_probe_device+0x189/0x260 drivers/base/bus.c:534 device_add+0x856/0xbf0 drivers/base/core.c:3672 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:254 usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:294 really_probe+0x2b8/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:459 __device_attach+0x333/0x520 drivers/base/dd.c:1030 bus_probe_device+0x189/0x260 drivers/base/bus.c:534 device_add+0x856/0xbf0 drivers/base/core.c:3672 usb_new_device+0x104a/0x19a0 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2d6d/0x5150 drivers/usb/core/hub.c:5903 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 47: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2338 [inline] slab_free mm/slub.c:4598 [inline] kfree+0x196/0x420 mm/slub.c:4746 xpad_disconnect+0x359/0x490 drivers/input/joystick/xpad.c:2180 usb_unbind_interface+0x25e/0x940 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296 bus_remove_device+0x34f/0x420 drivers/base/bus.c:576 device_del+0x57a/0x9b0 drivers/base/core.c:3861 usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1418 usb_disconnect+0x340/0x950 drivers/usb/core/hub.c:2304 hub_port_connect drivers/usb/core/hub.c:5361 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x1ebc/0x5150 drivers/usb/core/hub.c:5903 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/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 ffff888147b2a000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 92 bytes inside of freed 1024-byte region [ffff888147b2a000, ffff888147b2a400) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x147b28 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 057ff00000000040 ffff88801ac41dc0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 057ff00000000040 ffff88801ac41dc0 dead000000000100 dead000000000122 head: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 057ff00000000003 ffffea00051eca01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x252800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_THISNODE), pid 5865, tgid 5865 (syz-executor), ts 76155669029, free_ts 42940010660 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3474 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_slab_page+0x59/0x140 mm/slub.c:2410 allocate_slab+0x5a/0x2f0 mm/slub.c:2574 new_slab mm/slub.c:2627 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3815 __slab_alloc+0x58/0xa0 mm/slub.c:3905 __slab_alloc_node mm/slub.c:3980 [inline] slab_alloc_node mm/slub.c:4141 [inline] __kmalloc_cache_node_noprof+0x294/0x3a0 mm/slub.c:4322 kmalloc_node_noprof include/linux/slab.h:924 [inline] shrinker_unit_alloc mm/shrinker.c:50 [inline] alloc_shrinker_info+0x183/0x420 mm/shrinker.c:90 mem_cgroup_css_online+0x2c/0x3d0 mm/memcontrol.c:3636 online_css+0xbb/0x2e0 kernel/cgroup/cgroup.c:5568 css_create kernel/cgroup/cgroup.c:5652 [inline] cgroup_apply_control_enable+0x7d7/0xaf0 kernel/cgroup/cgroup.c:3239 cgroup_mkdir+0xa83/0xd60 kernel/cgroup/cgroup.c:5847 kernfs_iop_mkdir+0x253/0x3f0 fs/kernfs/dir.c:1246 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4311 do_mkdirat+0x264/0x3a0 fs/namei.c:4334 page last free pid 5234 tgid 5234 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xdf9/0x1140 mm/page_alloc.c:2657 discard_slab mm/slub.c:2673 [inline] __put_partials+0xeb/0x130 mm/slub.c:3142 put_cpu_partial+0x17c/0x250 mm/slub.c:3217 __slab_free+0x2ea/0x3d0 mm/slub.c:4468 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4104 [inline] slab_alloc_node mm/slub.c:4153 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4160 getname_flags+0xb7/0x540 fs/namei.c:139 getname_maybe_null include/linux/fs.h:2796 [inline] vfs_fstatat+0x3f/0x130 fs/stat.c:361 __do_sys_newfstatat fs/stat.c:530 [inline] __se_sys_newfstatat fs/stat.c:524 [inline] __x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:524 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888147b29f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888147b29f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888147b2a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888147b2a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888147b2a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 81 4c 8d 64 24 40 49 orl $0xc1494024,0x64(%rbp,%rcx,4) 7: c1 8: ec in (%dx),%al 9: 03 48 b8 add -0x48(%rax),%ecx c: f1 int1 d: f1 int1 e: f1 int1 f: f1 int1 10: 00 f2 add %dh,%dl 12: f2 f2 4b 89 04 2c repnz repnz mov %rax,(%r12,%r13,1) 18: 43 c7 44 2c 09 f2 f2 movl $0xf2f2f2,0x9(%r12,%r13,1) 1f: f2 00 21: 43 c7 44 2c 11 f3 f3 movl $0xf3f3f3f3,0x11(%r12,%r13,1) 28: f3 f3 * 2a: 66 43 c7 44 2c 15 f3 movw $0xf3f3,0x15(%r12,%r13,1) <-- trapping instruction 31: f3 32: 43 c6 44 2c 17 f3 movb $0xf3,0x17(%r12,%r13,1) 38: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3d: 65 gs 3e: 8b .byte 0x8b 3f: 05 .byte 0x5