powermate: config urb returned -108 ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0xda/0x2b00 kernel/locking/lockdep.c:4897 Read of size 8 at addr ffff88805527a458 by task udevd/962 CPU: 1 PID: 962 Comm: udevd Not tainted 5.16.0-rc7-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+0x1dc/0x2d8 lib/dump_stack.c:106 print_address_description+0x65/0x380 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report+0x19a/0x1f0 mm/kasan/report.c:450 __lock_acquire+0xda/0x2b00 kernel/locking/lockdep.c:4897 lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 powermate_config_complete+0x6b/0xc0 drivers/input/misc/powermate.c:202 __usb_hcd_giveback_urb+0x375/0x520 drivers/usb/core/hcd.c:1656 dummy_timer+0x808/0x3150 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x71a/0x910 kernel/time/timer.c:1734 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:get_page_from_freelist+0x22f/0x9e0 mm/page_alloc.c:4102 Code: 83 fb 03 0f 84 98 04 00 00 89 04 24 49 8d 2c dc 48 89 e8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 ef e8 d5 4d 0a 00 4c 8b 75 00 <49> 8d 6c 24 18 48 89 e8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 ef RSP: 0018:ffffc90004ed7ac8 EFLAGS: 00000246 RAX: 1ffff11027fff4e1 RBX: 0000000000000001 RCX: ffffffff81b737f5 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88805af22f88 RBP: ffff88813fffa708 R08: dffffc0000000000 R09: ffffed100b5e45f2 R10: ffffed100b5e45f2 R11: 0000000000000000 R12: ffff88813fffa700 R13: dffffc0000000000 R14: 0000000000002b71 R15: ffff88813fffc310 __alloc_pages+0x255/0x580 mm/page_alloc.c:5369 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab+0xcc/0x540 mm/slub.c:1930 new_slab mm/slub.c:1993 [inline] ___slab_alloc+0x41e/0xc40 mm/slub.c:3022 __slab_alloc mm/slub.c:3109 [inline] slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] kmem_cache_alloc+0x276/0x310 mm/slub.c:3247 getname_flags+0xba/0x650 fs/namei.c:138 user_path_at_empty+0x2a/0x1a0 fs/namei.c:2800 do_readlinkat+0x11b/0x3b0 fs/stat.c:443 __do_sys_readlink fs/stat.c:476 [inline] __se_sys_readlink fs/stat.c:473 [inline] __x64_sys_readlink+0x7b/0x90 fs/stat.c:473 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc481bb0277 Code: 73 01 c3 48 8b 0d 01 dc 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d1 db 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffc5bc8c5c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059 RAX: ffffffffffffffda RBX: 00007ffc5bc8c5d8 RCX: 00007fc481bb0277 RDX: 0000000000000400 RSI: 00007ffc5bc8c5d8 RDI: 00007ffc5bc8cab8 RBP: 0000000000000400 R08: 0000000000001fff R09: 00007fc481c7ea60 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc5bc8cab8 R13: 00007ffc5bc8ca28 R14: 00005597dd597910 R15: 00005597dcbb2a7c Allocated by task 3650: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:269 [inline] kmem_cache_alloc_trace+0x9d/0x330 mm/slub.c:3261 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] powermate_probe+0x1eb/0x15f0 drivers/input/misc/powermate.c:323 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x223/0x9b0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:751 driver_probe_device+0x50/0x240 drivers/base/dd.c:781 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:898 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:969 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3394 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x223/0x9b0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:751 driver_probe_device+0x50/0x240 drivers/base/dd.c:781 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:898 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:969 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3394 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2563 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5353 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5497 port_event+0xb67/0x1220 drivers/usb/core/hub.c:5643 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5725 process_one_work+0x853/0x1140 kernel/workqueue.c:2298 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Freed by task 19720: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x10d/0x150 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749 slab_free mm/slub.c:3513 [inline] kfree+0xe1/0x330 mm/slub.c:4561 usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1205 [inline] device_release_driver_internal+0x523/0x7b0 drivers/base/dd.c:1236 bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529 device_del+0x6f1/0xbf0 drivers/base/core.c:3581 usb_disable_device+0x407/0x800 drivers/usb/core/message.c:1419 usb_disconnect+0x33a/0x8a0 drivers/usb/core/hub.c:2225 hub_quiesce+0x185/0x330 drivers/usb/core/hub.c:1327 hub_disconnect+0xce/0x480 drivers/usb/core/hub.c:1722 usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1205 [inline] device_release_driver_internal+0x523/0x7b0 drivers/base/dd.c:1236 proc_disconnect_claim+0x2f1/0x3c0 drivers/usb/core/devio.c:2464 usbdev_do_ioctl drivers/usb/core/devio.c:2747 [inline] usbdev_ioctl+0x14b6/0x6d00 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff88805527a400 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 88 bytes inside of 256-byte region [ffff88805527a400, ffff88805527a500) The buggy address belongs to the page: page:ffffea0001549e80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5527a head:ffffea0001549e80 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001530b80 dead000000000005 ffff888011441b40 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6294, ts 206424846028, free_ts 203617661912 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0x729/0x9e0 mm/page_alloc.c:4149 __alloc_pages+0x255/0x580 mm/page_alloc.c:5369 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab+0xcc/0x540 mm/slub.c:1930 new_slab mm/slub.c:1993 [inline] ___slab_alloc+0x41e/0xc40 mm/slub.c:3022 __slab_alloc mm/slub.c:3109 [inline] slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] kmem_cache_alloc_trace+0x28c/0x330 mm/slub.c:3259 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] smk_fetch security/smack/smack_lsm.c:290 [inline] smack_d_instantiate+0x9f1/0xd10 security/smack/smack_lsm.c:3460 security_d_instantiate+0xa5/0x100 security/security.c:2040 d_instantiate_new+0x61/0x110 fs/dcache.c:2027 ext4_add_nondir+0x22b/0x290 fs/ext4/namei.c:2714 ext4_create+0x35a/0x550 fs/ext4/namei.c:2754 lookup_open fs/namei.c:3280 [inline] open_last_lookups fs/namei.c:3350 [inline] path_openat+0x1396/0x3660 fs/namei.c:3556 do_filp_open+0x277/0x4f0 fs/namei.c:3586 do_sys_openat2+0x13b/0x500 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_creat fs/open.c:1304 [inline] __se_sys_creat fs/open.c:1298 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0xd1c/0xe00 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x7d/0x580 mm/page_alloc.c:3388 free_slab mm/slub.c:2033 [inline] discard_slab mm/slub.c:2039 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2527 put_cpu_partial+0x116/0x180 mm/slub.c:2603 do_slab_free mm/slub.c:3501 [inline] ___cache_free+0xe6/0x120 mm/slub.c:3520 qlist_free_all mm/kasan/quarantine.c:165 [inline] kasan_quarantine_reduce+0x151/0x1c0 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0x2f/0xf0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3234 [inline] slab_alloc mm/slub.c:3242 [inline] __kmalloc+0x1ed/0x380 mm/slub.c:4419 kmalloc include/linux/slab.h:595 [inline] tomoyo_realpath_from_path+0xd8/0x610 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x238/0x660 security/tomoyo/file.c:822 security_inode_getattr+0xc0/0x140 security/security.c:1334 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0x168/0x3f0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat fs/stat.c:412 [inline] __se_sys_newfstatat+0xc8/0x760 fs/stat.c:406 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Memory state around the buggy address: ffff88805527a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805527a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805527a400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805527a480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805527a500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 83 fb 03 cmp $0x3,%ebx 3: 0f 84 98 04 00 00 je 0x4a1 9: 89 04 24 mov %eax,(%rsp) c: 49 8d 2c dc lea (%r12,%rbx,8),%rbp 10: 48 89 e8 mov %rbp,%rax 13: 48 c1 e8 03 shr $0x3,%rax 17: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 1c: 74 08 je 0x26 1e: 48 89 ef mov %rbp,%rdi 21: e8 d5 4d 0a 00 callq 0xa4dfb 26: 4c 8b 75 00 mov 0x0(%rbp),%r14 * 2a: 49 8d 6c 24 18 lea 0x18(%r12),%rbp <-- trapping instruction 2f: 48 89 e8 mov %rbp,%rax 32: 48 c1 e8 03 shr $0x3,%rax 36: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 3b: 74 08 je 0x45 3d: 48 89 ef mov %rbp,%rdi