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 ffff888109b309b8 by task kworker/1:0/20 CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 6.1.0-rc7-syzkaller-00131-g7428a253315c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495 si470x_int_in_callback.cold+0x96/0xbf drivers/media/radio/si470x/radio-si470x-usb.c:378 __usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1e4/0xabb kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:207 Code: 48 89 ef 5d e9 b1 ff 1e 00 5d be 03 00 00 00 e9 46 43 d0 00 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 b9 8e bb 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc9000015ee58 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000c15a000 RDX: 0000000000040000 RSI: ffffffff812cba15 RDI: 0000000000000007 RBP: ffffc9000015f010 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff8b910b20 R14: 0000000000000200 R15: ffffffff87ec8518 console_emit_next_record.constprop.0+0x4fb/0x840 arch/x86/include/asm/irqflags.h:45 console_flush_all kernel/printk/printk.c:2793 [inline] console_unlock+0x3be/0x600 kernel/printk/printk.c:2860 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2268 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50 _printk+0xba/0xed kernel/printk/printk.c:2289 call_driver_probe drivers/base/dd.c:576 [inline] really_probe.cold+0x69/0x175 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5405 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x2d58/0x4810 drivers/usb/core/hub.c:5791 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Allocated by task 20: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x7a/0x90 mm/kasan/common.c:380 kmalloc include/linux/slab.h:553 [inline] kzalloc include/linux/slab.h:689 [inline] si470x_usb_driver_probe+0x51/0xf90 drivers/media/radio/si470x/radio-si470x-usb.c:573 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5405 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x2d58/0x4810 drivers/usb/core/hub.c:5791 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 20: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x144/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x95/0x400 mm/slub.c:3674 si470x_usb_driver_probe+0xb3d/0xf90 drivers/media/radio/si470x/radio-si470x-usb.c:760 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5405 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x2d58/0x4810 drivers/usb/core/hub.c:5791 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff888109b30000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 2488 bytes inside of 4096-byte region [ffff888109b30000, ffff888109b31000) The buggy address belongs to the physical page: page:ffffea000426cc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b30 head:ffffea000426cc00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 0000000000000000 dead000000000001 ffff888100042140 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 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4030, tgid 4030 (syz-executor.5), ts 706689284145, free_ts 706616366548 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x128b/0x2c70 mm/page_alloc.c:4291 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5558 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x213/0x300 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3180 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279 slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x2e7/0x3b0 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0x46/0xc0 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] tomoyo_realpath_from_path+0xbf/0x600 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x21b/0x400 security/tomoyo/file.c:822 tomoyo_path_unlink+0x8e/0xd0 security/tomoyo/tomoyo.c:149 security_path_unlink+0xd7/0x150 security/security.c:1175 do_unlinkat+0x363/0x650 fs/namei.c:4316 __do_sys_unlink fs/namei.c:4368 [inline] __se_sys_unlink fs/namei.c:4366 [inline] __x64_sys_unlink+0xc6/0x110 fs/namei.c:4366 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+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare+0x64a/0xbf0 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x19/0x420 mm/page_alloc.c:3483 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2586 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x44/0x60 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x2a1/0x3a0 mm/slub.c:3422 mt_alloc_one lib/maple_tree.c:152 [inline] mas_alloc_nodes+0x429/0x810 lib/maple_tree.c:1226 mas_node_count_gfp lib/maple_tree.c:1310 [inline] mas_preallocate+0x1b7/0x360 lib/maple_tree.c:5717 vma_expand+0x1df/0xb70 mm/mmap.c:542 mmap_region+0xc5e/0x1bd0 mm/mmap.c:2592 do_mmap+0x82d/0xf60 mm/mmap.c:1412 vm_mmap_pgoff+0x1ab/0x270 mm/util.c:520 ksys_mmap_pgoff+0x79/0x5a0 mm/mmap.c:1458 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+0x63/0xcd Memory state around the buggy address: ffff888109b30880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888109b30900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888109b30980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888109b30a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888109b30a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: e9 b1 ff 1e 00 jmpq 0x1effba 9: 5d pop %rbp a: be 03 00 00 00 mov $0x3,%esi f: e9 46 43 d0 00 jmpq 0xd0435a 14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1a: 48 8b be a8 01 00 00 mov 0x1a8(%rsi),%rdi 21: e8 b4 ff ff ff callq 0xffffffda 26: 31 c0 xor %eax,%eax 28: c3 retq 29: 90 nop * 2a: 65 8b 05 b9 8e bb 7e mov %gs:0x7ebb8eb9(%rip),%eax # 0x7ebb8eea <-- trapping instruction 31: 89 c1 mov %eax,%ecx 33: 48 8b 34 24 mov (%rsp),%rsi 37: 81 e1 00 01 00 00 and $0x100,%ecx 3d: 65 gs 3e: 48 rex.W 3f: 8b .byte 0x8b