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BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:835 [inline]
BUG: KASAN: use-after-free in hlist_del include/linux/list.h:852 [inline]
BUG: KASAN: use-after-free in __cpuhp_state_remove_instance+0x58b/0x5b0 kernel/cpu.c:2002
Read of size 8 at addr ffff88801cbc4198 by task syz-executor.3/9658

CPU: 3 PID: 9658 Comm: syz-executor.3 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0xfa/0x151 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232
 __kasan_report mm/kasan/report.c:399 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416
 __hlist_del include/linux/list.h:835 [inline]
 hlist_del include/linux/list.h:852 [inline]
 __cpuhp_state_remove_instance+0x58b/0x5b0 kernel/cpu.c:2002
 cpuhp_state_remove_instance_nocalls include/linux/cpuhotplug.h:407 [inline]
 io_wq_create+0x6ca/0xbf0 fs/io-wq.c:1056
 io_init_wq_offload fs/io_uring.c:7792 [inline]
 io_uring_alloc_task_context+0x1bf/0x6a0 fs/io_uring.c:7811
 io_uring_add_task_file+0x261/0x350 fs/io_uring.c:8773
 io_uring_install_fd fs/io_uring.c:9381 [inline]
 io_uring_create fs/io_uring.c:9532 [inline]
 io_uring_setup+0x14c7/0x2be0 fs/io_uring.c:9571
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f32549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f54ea5ac EFLAGS: 00000282 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 0000000000002cce RCX: 0000000020000080
RDX: 00000000f54ea670 RSI: 000000000816c000 RDI: 00000000206d4000
RBP: 0000000020000100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 9658:
 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:427 [inline]
 ____kasan_kmalloc mm/kasan/common.c:506 [inline]
 ____kasan_kmalloc mm/kasan/common.c:465 [inline]
 __kasan_kmalloc+0x99/0xc0 mm/kasan/common.c:515
 kmalloc include/linux/slab.h:554 [inline]
 kzalloc include/linux/slab.h:684 [inline]
 io_wq_create+0xc0/0xbf0 fs/io-wq.c:1002
 io_init_wq_offload fs/io_uring.c:7792 [inline]
 io_uring_alloc_task_context+0x1bf/0x6a0 fs/io_uring.c:7811
 io_uring_add_task_file+0x261/0x350 fs/io_uring.c:8773
 io_uring_install_fd fs/io_uring.c:9381 [inline]
 io_uring_create fs/io_uring.c:9532 [inline]
 io_uring_setup+0x14c7/0x2be0 fs/io_uring.c:9571
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Freed by task 9658:
 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:360 [inline]
 ____kasan_slab_free mm/kasan/common.c:325 [inline]
 __kasan_slab_free+0xf5/0x130 mm/kasan/common.c:367
 kasan_slab_free include/linux/kasan.h:199 [inline]
 slab_free_hook mm/slub.c:1562 [inline]
 slab_free_freelist_hook+0x72/0x1b0 mm/slub.c:1600
 slab_free mm/slub.c:3161 [inline]
 kfree+0xe5/0x7b0 mm/slub.c:4213
 io_wq_destroy fs/io-wq.c:1091 [inline]
 io_wq_put+0x4d0/0x6d0 fs/io-wq.c:1098
 io_wq_create+0x92d/0xbf0 fs/io-wq.c:1053
 io_init_wq_offload fs/io_uring.c:7792 [inline]
 io_uring_alloc_task_context+0x1bf/0x6a0 fs/io_uring.c:7811
 io_uring_add_task_file+0x261/0x350 fs/io_uring.c:8773
 io_uring_install_fd fs/io_uring.c:9381 [inline]
 io_uring_create fs/io_uring.c:9532 [inline]
 io_uring_setup+0x14c7/0x2be0 fs/io_uring.c:9571
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:345
 insert_work+0x48/0x370 kernel/workqueue.c:1331
 __queue_work+0x5c1/0xf00 kernel/workqueue.c:1497
 queue_work_on+0xae/0xc0 kernel/workqueue.c:1524
 queue_work include/linux/workqueue.h:507 [inline]
 call_usermodehelper_exec+0x1f0/0x4c0 kernel/umh.c:433
 kobject_uevent_env+0xf9f/0x1680 lib/kobject_uevent.c:617
 netdev_queue_add_kobject net/core/net-sysfs.c:1652 [inline]
 netdev_queue_update_kobjects+0x2ff/0x3d0 net/core/net-sysfs.c:1686
 register_queue_kobjects net/core/net-sysfs.c:1747 [inline]
 netdev_register_kobject+0x35a/0x430 net/core/net-sysfs.c:1990
 register_netdevice+0xd33/0x14a0 net/core/dev.c:10178
 cfg80211_register_netdevice+0x157/0x370 net/wireless/core.c:1350
 ieee80211_if_add+0xfb8/0x18f0 net/mac80211/iface.c:1990
 ieee80211_register_hw+0x331a/0x3c70 net/mac80211/main.c:1285
 mac80211_hwsim_new_radio+0x20d9/0x4910 drivers/net/wireless/mac80211_hwsim.c:3333
 hwsim_new_radio_nl+0x9d6/0x1140 drivers/net/wireless/mac80211_hwsim.c:3894
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 __sys_sendto+0x21c/0x320 net/socket.c:1977
 __do_compat_sys_socketcall+0x47f/0x660 net/compat.c:476
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Second to last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:345
 insert_work+0x48/0x370 kernel/workqueue.c:1331
 __queue_work+0x5c1/0xf00 kernel/workqueue.c:1497
 queue_work_on+0xae/0xc0 kernel/workqueue.c:1524
 queue_work include/linux/workqueue.h:507 [inline]
 call_usermodehelper_exec+0x1f0/0x4c0 kernel/umh.c:433
 kobject_uevent_env+0xf9f/0x1680 lib/kobject_uevent.c:617
 netdev_queue_add_kobject net/core/net-sysfs.c:1652 [inline]
 netdev_queue_update_kobjects+0x2ff/0x3d0 net/core/net-sysfs.c:1686
 register_queue_kobjects net/core/net-sysfs.c:1747 [inline]
 netdev_register_kobject+0x35a/0x430 net/core/net-sysfs.c:1990
 register_netdevice+0xd33/0x14a0 net/core/dev.c:10178
 nsim_create+0x245/0x2f0 drivers/net/netdevsim/netdev.c:315
 __nsim_dev_port_add+0x270/0x4c0 drivers/net/netdevsim/dev.c:941
 nsim_dev_port_add_all drivers/net/netdevsim/dev.c:990 [inline]
 nsim_dev_probe+0xbcb/0x1050 drivers/net/netdevsim/dev.c:1121
 really_probe+0x291/0xe60 drivers/base/dd.c:554
 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:740
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:846
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
 __device_attach+0x228/0x4a0 drivers/base/dd.c:914
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0xbdb/0x1db0 drivers/base/core.c:3242
 nsim_bus_dev_new drivers/net/netdevsim/bus.c:336 [inline]
 new_device_store+0x374/0x5c0 drivers/net/netdevsim/bus.c:215
 bus_attr_store+0x72/0xa0 drivers/base/bus.c:122
 sysfs_kf_write+0x110/0x160 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x342/0x500 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:1977 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:139
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:164
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

The buggy address belongs to the object at ffff88801cbc4100
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 152 bytes inside of
 192-byte region [ffff88801cbc4100, ffff88801cbc41c0)
The buggy address belongs to the page:
page:0000000040c6ce5a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1cbc4
flags: 0xfff00000000200(slab)
raw: 00fff00000000200 ffffea0000649800 0000000500000005 ffff888010842a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88801cbc4080: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88801cbc4100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801cbc4180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                            ^
 ffff88801cbc4200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88801cbc4280: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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