wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready ============================= WARNING: suspicious RCU usage 5.17.0-rc3-next-20220207 #1 Not tainted ----------------------------- fs/io_uring.c:9411 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by kworker/u4:6/351: #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x915/0x16a0 #1: ffff88803fb87db0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x949/0x16a0 stack backtrace: CPU: 1 PID: 351 Comm: kworker/u4:6 Not tainted 5.17.0-rc3-next-20220207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: events_unbound io_ring_exit_work Call Trace: dump_stack_lvl+0x8b/0xb3 io_eventfd_unregister+0xee/0x110 io_ring_exit_work+0x77d/0xbec process_one_work+0xa1c/0x16a0 worker_thread+0x637/0x1260 kthread+0x2f0/0x3a0 ret_from_fork+0x22/0x30 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready tmpfs: Unknown parameter 'Zm 5ŸÐ«js' loop3: detected capacity change from 0 to 4 tmpfs: Unknown parameter 'Zm 5ŸÐ«js' wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready loop3: detected capacity change from 0 to 256 loop3: detected capacity change from 0 to 256 loop7: detected capacity change from 0 to 16383 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready loop7: detected capacity change from 0 to 16383 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready loop2: detected capacity change from 0 to 16383 SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready loop2: detected capacity change from 0 to 16383 SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 loop7: detected capacity change from 0 to 16383 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready audit: type=1326 audit(1644312171.514:7): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=3946 comm="syz-executor.2" exe="/syz-executor.2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f360ce64b19 code=0x0