BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 10253, name: kworker/u4:5 4 locks held by kworker/u4:5/10253: #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: process_one_work+0x1ed/0x660 kernel/workqueue.c:2243 #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x1ed/0x660 kernel/workqueue.c:2243 #2: ffff88811ebbcd00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline] #2: ffff88811ebbcd00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x36/0x480 net/mac80211/ibss.c:1683 #3: ffffffff850278a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline] #3: ffffffff850278a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x1df/0xe80 net/mac80211/sta_info.c:732 Preemption disabled at: [] __mutex_lock_common kernel/locking/mutex.c:955 [inline] [] __mutex_lock+0x70/0xa30 kernel/locking/mutex.c:1103 CPU: 0 PID: 10253 Comm: kworker/u4:5 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy9 ieee80211_iface_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x77/0x97 lib/dump_stack.c:118 ___might_sleep.cold.92+0x65/0x79 kernel/sched/core.c:7298 sta_info_move_state+0x1c/0x2d0 net/mac80211/sta_info.c:1962 sta_info_free+0x16/0xf0 net/mac80211/sta_info.c:274 sta_info_insert_rcu+0xcc/0xe80 net/mac80211/sta_info.c:738 ieee80211_ibss_finish_sta+0xad/0x130 net/mac80211/ibss.c:592 ieee80211_ibss_work+0x10e/0x480 net/mac80211/ibss.c:1700 process_one_work+0x27a/0x660 kernel/workqueue.c:2272 worker_thread+0x38/0x390 kernel/workqueue.c:2418 kthread+0x145/0x170 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 ============================= [ BUG: Invalid wait context ] 5.10.0-rc2-syzkaller #0 Tainted: G W ----------------------------- kworker/u4:5/10253 is trying to lock: ffff88811ebb29d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x21/0xb0 net/mac80211/util.c:2740 other info that might help us debug this: context-{4:4} 4 locks held by kworker/u4:5/10253: #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff88811eb2ed38 ((wq_completion)phy9){+.+.}-{0:0}, at: process_one_work+0x1ed/0x660 kernel/workqueue.c:2243 #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline] #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #1: ffffc9000304be70 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x1ed/0x660 kernel/workqueue.c:2243 #2: ffff88811ebbcd00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline] #2: ffff88811ebbcd00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x36/0x480 net/mac80211/ibss.c:1683 #3: ffffffff850278a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline] #3: ffffffff850278a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x1df/0xe80 net/mac80211/sta_info.c:732 stack backtrace: CPU: 0 PID: 10253 Comm: kworker/u4:5 Tainted: G W 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy9 ieee80211_iface_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x77/0x97 lib/dump_stack.c:118 print_lock_invalid_wait_context kernel/locking/lockdep.c:4483 [inline] check_wait_context kernel/locking/lockdep.c:4544 [inline] __lock_acquire.cold.60+0xc4/0x2e8 kernel/locking/lockdep.c:4781 lock_acquire+0xd0/0x420 kernel/locking/lockdep.c:5436 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x94/0xa30 kernel/locking/mutex.c:1103 ieee80211_recalc_min_chandef+0x21/0xb0 net/mac80211/util.c:2740 sta_info_move_state+0x146/0x2d0 net/mac80211/sta_info.c:2019 sta_info_free+0x16/0xf0 net/mac80211/sta_info.c:274 sta_info_insert_rcu+0xcc/0xe80 net/mac80211/sta_info.c:738 ieee80211_ibss_finish_sta+0xad/0x130 net/mac80211/ibss.c:592 ieee80211_ibss_work+0x10e/0x480 net/mac80211/ibss.c:1700 process_one_work+0x27a/0x660 kernel/workqueue.c:2272 worker_thread+0x38/0x390 kernel/workqueue.c:2418 kthread+0x145/0x170 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50