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BUG: KCSAN: data-race in __kernfs_remove / kernfs_iop_permission

read-write to 0xffff888135e31d40 of 8 bytes by task 5574 on cpu 1:
 kernfs_unlink_sibling fs/kernfs/dir.c:412 [inline]
 __kernfs_remove+0x2ee/0x440 fs/kernfs/dir.c:1467
 kernfs_remove+0x4e/0x70 fs/kernfs/dir.c:1503
 sysfs_remove_dir+0x7e/0xa0 fs/sysfs/dir.c:101
 __kobject_del+0x9d/0x1a0 lib/kobject.c:597
 kobject_cleanup lib/kobject.c:673 [inline]
 kobject_release lib/kobject.c:713 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x119/0x170 lib/kobject.c:730
 netdev_queue_update_kobjects+0x31c/0x350 net/core/net-sysfs.c:1761
 remove_queue_kobjects net/core/net-sysfs.c:1858 [inline]
 netdev_unregister_kobject+0xc7/0x120 net/core/net-sysfs.c:2011
 unregister_netdevice_many_notify+0xc64/0x1070 net/core/dev.c:10880
 unregister_netdevice_many net/core/dev.c:10906 [inline]
 unregister_netdevice_queue+0x1cf/0x200 net/core/dev.c:10786
 unregister_netdevice include/linux/netdevice.h:3112 [inline]
 nsim_destroy+0x2c/0xd0 drivers/net/netdevsim/netdev.c:375
 __nsim_dev_port_del+0xcd/0x100 drivers/net/netdevsim/dev.c:1425
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1437 [inline]
 nsim_dev_reload_destroy+0x1a6/0x2c0 drivers/net/netdevsim/dev.c:1658
 nsim_drv_remove+0x3e/0x100 drivers/net/netdevsim/dev.c:1673
 nsim_bus_remove+0x15/0x20 drivers/net/netdevsim/bus.c:246
 device_remove drivers/base/dd.c:567 [inline]
 __device_release_driver drivers/base/dd.c:1270 [inline]
 device_release_driver_internal+0x2e1/0x4d0 drivers/base/dd.c:1293
 device_release_driver+0x19/0x20 drivers/base/dd.c:1316
 bus_remove_device+0x266/0x280 drivers/base/bus.c:574
 device_del+0x363/0x790 drivers/base/core.c:3814
 device_unregister+0x15/0x30 drivers/base/core.c:3844
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
 del_device_store+0x1cb/0x230 drivers/net/netdevsim/bus.c:219
 bus_attr_store+0x50/0x70 drivers/base/bus.c:170
 sysfs_kf_write+0xaa/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1ca/0x2b0 fs/kernfs/file.c:334
 call_write_iter include/linux/fs.h:1877 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x4ab/0x7d0 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888135e31d40 of 8 bytes by task 2768 on cpu 0:
 kernfs_refresh_inode fs/kernfs/inode.c:181 [inline]
 kernfs_iop_permission+0x165/0x1b0 fs/kernfs/inode.c:289
 do_inode_permission fs/namei.c:461 [inline]
 inode_permission+0x184/0x300 fs/namei.c:528
 may_lookup fs/namei.c:1720 [inline]
 link_path_walk+0x19e/0x7e0 fs/namei.c:2267
 path_openat+0x1a1/0x1d10 fs/namei.c:3789
 do_filp_open+0xf6/0x200 fs/namei.c:3820
 do_sys_openat2+0xab/0x110 fs/open.c:1407
 do_sys_open fs/open.c:1422 [inline]
 __do_sys_openat fs/open.c:1438 [inline]
 __se_sys_openat fs/open.c:1433 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1433
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x0000000000000001 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2768 Comm: udevd Not tainted 6.5.0-rc5-syzkaller-00296-gf8de32cc060b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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