------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 5159 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4729 [inline] WARNING: CPU: 0 PID: 5159 at kernel/locking/lockdep.c:231 __lock_acquire+0x2c0/0x2f48 kernel/locking/lockdep.c:5005 Modules linked in: CPU: 0 PID: 5159 Comm: kworker/u4:11 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: events_unbound call_usermodehelper_exec_work pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2c0/0x2f48 kernel/locking/lockdep.c:5005 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4729 [inline] lr : __lock_acquire+0x2a8/0x2f48 kernel/locking/lockdep.c:5005 sp : ffff80002054bb00 x29: ffff80002054bbe0 x28: ffff0000e74b2440 x27: ffff80000d2c49a4 x26: ffff0000e74b2420 x25: 0000000000000001 x24: 0000000000000000 x23: 0000000000000001 x22: 0000000000000000 x21: ffff0000e74b23d0 x20: 0000000000000002 x19: aaaaaaaaaaa31957 x18: 0000000000000000 x17: 000000000000ba7e x16: 0000000000000001 x15: ffff80000dbd2118 x14: ffff0000e74b1a00 x13: 0000000000000012 x12: ffff0000e74b1a00 x11: ffff80000dd94158 x10: 0000000000000000 x9 : da680f1092402900 x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000bf650d4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000001 x0 : 0000000000000016 Call trace: check_wait_context kernel/locking/lockdep.c:4729 [inline] __lock_acquire+0x2c0/0x2f48 kernel/locking/lockdep.c:5005 lock_acquire+0x164/0x334 kernel/locking/lockdep.c:5668 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x68/0x88 kernel/locking/spinlock.c:162 complete+0x24/0x90 kernel/sched/completion.c:32 call_usermodehelper_exec_work+0x128/0x17c process_one_work+0x3ac/0x9d0 kernel/workqueue.c:2289 worker_thread+0x340/0x608 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 115998 hardirqs last enabled at (115997): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (115997): [] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (115998): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (115998): [] _raw_spin_lock_irqsave+0x2c/0x88 kernel/locking/spinlock.c:162 softirqs last enabled at (115906): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (115906): [] ieee80211_ibss_work+0x170/0x9d8 net/mac80211/ibss.c:1701 softirqs last disabled at (115904): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (115904): [] ieee80211_ibss_work+0x68/0x9d8 net/mac80211/ibss.c:1690 ---[ end trace 0000000000000000 ]--- Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000001274f6000 [00000000000000b8] pgd=0800000127562003, p4d=0800000127562003, pud=0800000109882003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 5159 Comm: kworker/u4:11 Tainted: G W 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: events_unbound call_usermodehelper_exec_work pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2e0/0x2f48 kernel/locking/lockdep.c:5005 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4729 [inline] lr : __lock_acquire+0x2a8/0x2f48 kernel/locking/lockdep.c:5005 sp : ffff80002054bb00 x29: ffff80002054bbe0 x28: ffff0000e74b2440 x27: ffff80000d2c49a4 x26: ffff0000e74b2420 x25: 0000000000000001 x24: 0000000000000000 x23: 0000000000000001 x22: 0000000000000000 x21: ffff0000e74b23d0 x20: 0000000000000002 x19: aaaaaaaaaaa31957 x18: 0000000000000000 x17: 000000000000ba7e x16: 0000000000000001 x15: ffff80000dbd2118 x14: ffff0000e74b1a00 x13: 0000000000000012 x12: ffff0000e74b1a00 x11: ffff80000dd94158 x10: 0000000000000000 x9 : 00000000000c1957 x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000bf650d4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000001 x0 : 0000000000000016 Call trace: hlock_class kernel/locking/lockdep.c:222 [inline] check_wait_context kernel/locking/lockdep.c:4730 [inline] __lock_acquire+0x2e0/0x2f48 kernel/locking/lockdep.c:5005 lock_acquire+0x164/0x334 kernel/locking/lockdep.c:5668 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x68/0x88 kernel/locking/spinlock.c:162 complete+0x24/0x90 kernel/sched/completion.c:32 call_usermodehelper_exec_work+0x128/0x17c process_one_work+0x3ac/0x9d0 kernel/workqueue.c:2289 worker_thread+0x340/0x608 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Code: 910461ef 9002dfeb 9105616b b9400389 (3942e118) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 910461ef add x15, x15, #0x118 4: 9002dfeb adrp x11, 0x5bfc000 8: 9105616b add x11, x11, #0x158 c: b9400389 ldr w9, [x28] * 10: 3942e118 ldrb w24, [x8, #184] <-- trapping instruction