radio-si470x 1-1:0.0: non-zero urb status (-71) radio-si470x 1-1:0.0: non-zero urb status (-71) ================================================================== BUG: KASAN: use-after-free in si470x_int_in_callback.cold+0x96/0xbf drivers/media/radio/si470x/radio-si470x-usb.c:378 Read of size 8 at addr ffff888018e48b40 by task kworker/1:0/20 CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.13.0-rc2-next-20210518-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x13e/0x1d6 lib/dump_stack.c:129 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:436 si470x_int_in_callback.cold+0x96/0xbf drivers/media/radio/si470x/radio-si470x-usb.c:378 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1978 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744 __do_softirq+0x29b/0x9fb kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 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:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:mutex_spin_on_owner+0x1fc/0x330 kernel/locking/mutex.c:569 Code: 24 00 0f 84 9d 00 00 00 48 8d 7d 50 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 13 01 00 00 48 8b 04 24 48 3b 45 50 75 9f f3 90 6a fe ff ff e8 ba 6f c3 07 85 c0 74 9b 80 3d cf 48 7b 0c 00 75 RSP: 0018:ffffc90000da7aa0 EFLAGS: 00000246 RAX: ffff8880b9c00000 RBX: ffff888015de8000 RCX: 1ffffffff17fe03f RDX: ffffed100248b001 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffffff8d8aab80 R08: 0000000000000000 R09: ffff888012458007 R10: ffffed100248b000 R11: 0000000000000000 R12: ffff888012458000 R13: 0000000000000000 R14: ffffed100248b000 R15: dffffc0000000000 mutex_optimistic_spin kernel/locking/mutex.c:663 [inline] __mutex_lock_common kernel/locking/mutex.c:952 [inline] __mutex_lock+0x733/0x1120 kernel/locking/mutex.c:1096 addrconf_dad_work+0xa3/0x1340 net/ipv6/addrconf.c:4031 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Allocated by task 23: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:431 [inline] ____kasan_kmalloc mm/kasan/common.c:510 [inline] ____kasan_kmalloc mm/kasan/common.c:469 [inline] __kasan_kmalloc+0x9b/0xd0 mm/kasan/common.c:519 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:720 [inline] si470x_usb_driver_probe+0x51/0xf90 drivers/media/radio/si470x/radio-si470x-usb.c:573 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3320 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3320 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2556 hub_port_connect drivers/usb/core/hub.c:5276 [inline] hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] port_event drivers/usb/core/hub.c:5562 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Freed by task 23: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:363 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:371 kasan_slab_free include/linux/kasan.h:212 [inline] slab_free_hook mm/slub.c:1623 [inline] slab_free_freelist_hook+0xdf/0x240 mm/slub.c:1648 slab_free mm/slub.c:3208 [inline] kfree+0xeb/0x650 mm/slub.c:4274 si470x_usb_driver_probe+0xb3d/0xf90 drivers/media/radio/si470x/radio-si470x-usb.c:766 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3320 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3320 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2556 hub_port_connect drivers/usb/core/hub.c:5276 [inline] hub_port_connect_change drivers/usb/core/hub.c:5416 [inline] port_event drivers/usb/core/hub.c:5562 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 The buggy address belongs to the object at ffff888018e48000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 2880 bytes inside of 4096-byte region [ffff888018e48000, ffff888018e49000) The buggy address belongs to the page: page:ffffea0000639200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x18e48 head:ffffea0000639200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888011042140 raw: 0000000000000000 0000000000040004 00000001ffffffff 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 23, ts 73921585668, free_ts 73880402782 prep_new_page mm/page_alloc.c:2377 [inline] get_page_from_freelist+0x125c/0x2ed0 mm/page_alloc.c:4038 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5239 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272 alloc_slab_page mm/slub.c:1686 [inline] allocate_slab+0x2c2/0x4c0 mm/slub.c:1826 new_slab mm/slub.c:1889 [inline] new_slab_objects mm/slub.c:2635 [inline] ___slab_alloc+0x4ba/0x820 mm/slub.c:2798 __slab_alloc.constprop.0+0xa7/0xf0 mm/slub.c:2838 slab_alloc_node mm/slub.c:2920 [inline] slab_alloc mm/slub.c:2962 [inline] kmem_cache_alloc_trace+0x30f/0x3c0 mm/slub.c:2979 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:720 [inline] si470x_usb_driver_probe+0x51/0xf90 drivers/media/radio/si470x/radio-si470x-usb.c:573 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 __device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:938 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbe0/0x2100 drivers/base/core.c:3320 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1305 [inline] __free_pages_ok+0x4cb/0xf30 mm/page_alloc.c:1586 qlink_free mm/kasan/quarantine.c:146 [inline] qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0x8e/0xa0 mm/kasan/common.c:441 kasan_slab_alloc include/linux/kasan.h:236 [inline] slab_post_alloc_hook mm/slab.h:512 [inline] slab_alloc_node mm/slub.c:2954 [inline] slab_alloc mm/slub.c:2962 [inline] kmem_cache_alloc+0x285/0x4a0 mm/slub.c:2967 getname_flags.part.0+0x50/0x4f0 fs/namei.c:138 getname_flags include/linux/audit.h:319 [inline] getname+0x8e/0xd0 fs/namei.c:209 do_sys_openat2+0xf5/0x420 fs/open.c:1190 do_sys_open fs/open.c:1212 [inline] __do_sys_open fs/open.c:1220 [inline] __se_sys_open fs/open.c:1216 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1216 do_syscall_64+0x31/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Memory state around the buggy address: ffff888018e48a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888018e48a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888018e48b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888018e48b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888018e48c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================