================================================================== BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x64/0x104 lib/list_debug.c:65 Read of size 8 at addr ff600000311e8008 by task syz-executor.0/3079 CPU: 0 PID: 3079 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller-g8eb8fe67e2c8 #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe8/0x154 lib/dump_stack.c:106 [] print_address_description mm/kasan/report.c:364 [inline] [] print_report+0x1e4/0x4f4 mm/kasan/report.c:475 [] kasan_report+0xf0/0x1ba mm/kasan/report.c:588 [] check_region_inline mm/kasan/generic.c:181 [inline] [] __asan_load8+0x80/0xa8 mm/kasan/generic.c:260 [] __list_del_entry_valid_or_report+0x64/0x104 lib/list_debug.c:65 [] __list_del_entry_valid include/linux/list.h:124 [inline] [] __list_del_entry include/linux/list.h:215 [inline] [] list_del include/linux/list.h:229 [inline] [] nfc_llcp_remove_local net/nfc/llcp_core.c:306 [inline] [] nfc_llcp_unregister_device+0x9a/0x1c8 net/nfc/llcp_core.c:1646 [] nfc_unregister_device+0x124/0x234 net/nfc/core.c:1179 [] nci_unregister_device+0x168/0x182 net/nfc/nci/core.c:1303 [] virtual_ncidev_close+0x38/0x6e drivers/nfc/virtual_ncidev.c:163 [] __fput+0x252/0x594 fs/file_table.c:384 [] __fput_sync+0x5e/0x72 fs/file_table.c:465 [] __do_sys_close fs/open.c:1572 [inline] [] __se_sys_close fs/open.c:1557 [inline] [] __riscv_sys_close+0x56/0xba fs/open.c:1557 [] syscall_handler+0x76/0xba arch/riscv/include/asm/syscall.h:90 [] do_trap_ecall_u+0x9c/0x9e arch/riscv/kernel/traps.c:312 [] ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:102 Allocated by task 3099: stack_trace_save+0xa0/0xd2 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x6a mm/kasan/common.c:45 kasan_set_track+0x1a/0x26 mm/kasan/common.c:52 kasan_save_alloc_info+0x1a/0x24 mm/kasan/generic.c:511 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xa8 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] kmalloc_trace+0x44/0x56 mm/slab_common.c:1119 kmalloc include/linux/slab.h:599 [inline] kzalloc include/linux/slab.h:720 [inline] nfc_llcp_register_device+0x48/0x4ea net/nfc/llcp_core.c:1602 nfc_register_device+0x8c/0x2b4 net/nfc/core.c:1124 nci_register_device+0x534/0x612 net/nfc/nci/core.c:1257 virtual_ncidev_open+0xf8/0x172 drivers/nfc/virtual_ncidev.c:148 misc_open+0x2b2/0x2e8 drivers/char/misc.c:165 chrdev_open+0x1cc/0x474 fs/char_dev.c:414 do_dentry_open+0x4d0/0xa84 fs/open.c:929 vfs_open+0x52/0x5e fs/open.c:1063 do_open fs/namei.c:3639 [inline] path_openat+0x1014/0x1714 fs/namei.c:3796 do_filp_open+0x126/0x252 fs/namei.c:3823 do_sys_openat2+0x170/0x1bc fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __riscv_sys_openat+0x136/0x1a4 fs/open.c:1448 syscall_handler+0x76/0xba arch/riscv/include/asm/syscall.h:90 do_trap_ecall_u+0x9c/0x9e arch/riscv/kernel/traps.c:312 ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:102 Freed by task 3103: stack_trace_save+0xa0/0xd2 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x6a mm/kasan/common.c:45 kasan_set_track+0x1a/0x26 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x46 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15e/0x20c mm/kasan/common.c:200 __kasan_slab_free+0x10/0x18 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0xca/0x1b4 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xa4/0x31a mm/slub.c:3822 kfree+0xa2/0x176 mm/slab_common.c:1072 local_release net/nfc/llcp_core.c:175 [inline] kref_put include/linux/kref.h:65 [inline] nfc_llcp_local_put.part.0+0x94/0xc4 net/nfc/llcp_core.c:183 nfc_llcp_local_put net/nfc/llcp_core.c:180 [inline] nfc_llcp_unregister_device+0x144/0x1c8 net/nfc/llcp_core.c:1655 nfc_unregister_device+0x124/0x234 net/nfc/core.c:1179 nci_unregister_device+0x168/0x182 net/nfc/nci/core.c:1303 virtual_ncidev_close+0x38/0x6e drivers/nfc/virtual_ncidev.c:163 __fput+0x252/0x594 fs/file_table.c:384 __fput_sync+0x5e/0x72 fs/file_table.c:465 __do_sys_close fs/open.c:1572 [inline] __se_sys_close fs/open.c:1557 [inline] __riscv_sys_close+0x56/0xba fs/open.c:1557 syscall_handler+0x76/0xba arch/riscv/include/asm/syscall.h:90 do_trap_ecall_u+0x9c/0x9e arch/riscv/kernel/traps.c:312 ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:102 Last potentially related work creation: stack_trace_save+0xa0/0xd2 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x6a mm/kasan/common.c:45 __kasan_record_aux_stack+0xf6/0x13e mm/kasan/generic.c:492 kasan_record_aux_stack_noalloc+0xe/0x16 mm/kasan/generic.c:502 insert_work+0x42/0x14e kernel/workqueue.c:1647 __queue_work+0x5f0/0x114a kernel/workqueue.c:1799 queue_work_on+0xaa/0x114 kernel/workqueue.c:1834 queue_work include/linux/workqueue.h:554 [inline] rpm_suspend+0xd36/0xe78 drivers/base/power/runtime.c:660 rpm_idle+0x47c/0x534 drivers/base/power/runtime.c:534 __pm_runtime_idle+0x6e/0x16c drivers/base/power/runtime.c:1102 pm_runtime_put include/linux/pm_runtime.h:460 [inline] hub_configure drivers/usb/core/hub.c:1696 [inline] hub_probe+0x1900/0x1d5c drivers/usb/core/hub.c:1922 usb_probe_interface+0x208/0x552 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x1c8/0x7c6 drivers/base/dd.c:658 __driver_probe_device+0x13e/0x2ae drivers/base/dd.c:800 driver_probe_device+0x60/0x1a6 drivers/base/dd.c:830 __device_attach_driver+0x168/0x218 drivers/base/dd.c:958 bus_for_each_drv+0x12c/0x1ae drivers/base/bus.c:457 __device_attach+0x184/0x390 drivers/base/dd.c:1030 device_initial_probe+0x1c/0x26 drivers/base/dd.c:1079 bus_probe_device+0x120/0x122 drivers/base/bus.c:532 device_add+0xcee/0x1064 drivers/base/core.c:3622 usb_set_configuration+0xb48/0xfb6 drivers/usb/core/message.c:2207 usb_generic_driver_probe+0xb2/0x124 drivers/usb/core/generic.c:238 usb_probe_device+0x9e/0x1fc drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x1c8/0x7c6 drivers/base/dd.c:658 __driver_probe_device+0x13e/0x2ae drivers/base/dd.c:800 driver_probe_device+0x60/0x1a6 drivers/base/dd.c:830 __device_attach_driver+0x168/0x218 drivers/base/dd.c:958 bus_for_each_drv+0x12c/0x1ae drivers/base/bus.c:457 __device_attach+0x184/0x390 drivers/base/dd.c:1030 device_initial_probe+0x1c/0x26 drivers/base/dd.c:1079 bus_probe_device+0x120/0x122 drivers/base/bus.c:532 device_add+0xcee/0x1064 drivers/base/core.c:3622 usb_new_device+0x5c8/0xd38 drivers/usb/core/hub.c:2589 hub_port_connect drivers/usb/core/hub.c:5440 [inline] hub_port_connect_change drivers/usb/core/hub.c:5580 [inline] port_event drivers/usb/core/hub.c:5740 [inline] hub_event+0x2016/0x30aa drivers/usb/core/hub.c:5822 process_one_work+0x54c/0xd66 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x506/0x980 kernel/workqueue.c:2784 kthread+0x1bc/0x22c kernel/kthread.c:388 ret_from_fork+0xa/0x1c arch/riscv/kernel/entry.S:264 Second to last potentially related work creation: stack_trace_save+0xa0/0xd2 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x6a mm/kasan/common.c:45 __kasan_record_aux_stack+0xf6/0x13e mm/kasan/generic.c:492 kasan_record_aux_stack_noalloc+0xe/0x16 mm/kasan/generic.c:502 __call_rcu_common.constprop.0+0x80/0x4d6 kernel/rcu/tree.c:2653 call_rcu+0xc/0x14 kernel/rcu/tree.c:2767 netlink_release+0xc60/0x16de net/netlink/af_netlink.c:831 __sock_release+0x7a/0x170 net/socket.c:659 sock_close+0x1e/0x2a net/socket.c:1402 __fput+0x252/0x594 fs/file_table.c:384 __fput_sync+0x5e/0x72 fs/file_table.c:465 __do_sys_close fs/open.c:1572 [inline] __se_sys_close fs/open.c:1557 [inline] __riscv_sys_close+0x56/0xba fs/open.c:1557 syscall_handler+0x76/0xba arch/riscv/include/asm/syscall.h:90 do_trap_ecall_u+0x9c/0x9e arch/riscv/kernel/traps.c:312 ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:102 The buggy address belongs to the object at ff600000311e8000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 8 bytes inside of freed 2048-byte region [ff600000311e8000, ff600000311e8800) The buggy address belongs to the physical page: page:ff1c000002c47a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb11e8 head:ff1c000002c47a00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xffe000000000840(slab|head|node=0|zone=0|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 0ffe000000000840 ff60000008402000 0000000000000100 0000000000000122 raw: 0000000000000000 0000000000080008 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 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2933, tgid 2933 (syz-executor.0), ts 694675301200, free_ts 0 __set_page_owner+0x32/0x18a mm/page_owner.c:192 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x8c/0xe2 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x84a/0x121e mm/page_alloc.c:3170 __alloc_pages+0x19c/0x142e mm/page_alloc.c:4426 alloc_pages+0x126/0x252 mm/mempolicy.c:2298 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab mm/slub.c:2017 [inline] new_slab+0x272/0x382 mm/slub.c:2070 ___slab_alloc+0x5b6/0xa92 mm/slub.c:3223 __slab_alloc.constprop.0+0x58/0x94 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0xf0/0x2e0 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1022 [inline] __kmalloc_node_track_caller+0x3a/0xea mm/slab_common.c:1043 kmalloc_reserve+0xbc/0x1c2 net/core/skbuff.c:581 pskb_expand_head+0x18a/0x924 net/core/skbuff.c:2093 netlink_trim+0x158/0x16a net/netlink/af_netlink.c:1324 netlink_broadcast_filtered+0xde/0xb98 net/netlink/af_netlink.c:1531 netlink_broadcast net/netlink/af_netlink.c:1576 [inline] nlmsg_multicast include/net/netlink.h:1079 [inline] nlmsg_notify+0xc8/0x20c net/netlink/af_netlink.c:2588 rtnl_notify net/core/rtnetlink.c:771 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:4061 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4077 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4064 [inline] rtnetlink_event+0x118/0x146 net/core/rtnetlink.c:6495 page_owner free stack trace missing Memory state around the buggy address: ff600000311e7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ff600000311e7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ff600000311e8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ff600000311e8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ff600000311e8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================