------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 3786 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4729 [inline] WARNING: CPU: 1 PID: 3786 at kernel/locking/lockdep.c:231 __lock_acquire+0x2b0/0x3084 kernel/locking/lockdep.c:5005 Modules linked in: CPU: 1 PID: 3786 Comm: syz-executor.1 Not tainted 6.1.0-rc4-syzkaller-00039-g1621b6eaebf7-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2b0/0x3084 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+0x298/0x3084 kernel/locking/lockdep.c:5005 sp : ffff80001301b3e0 x29: ffff80001301b4c0 x28: 0000000000000001 x27: ffff0000cfbbb4a8 x26: ffff0000d342ea78 x25: ffff0000cfbbbeb0 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000001 x19: aaaaaa0001076c5e x18: 00000000000000c0 x17: ffff80000dcdc198 x16: ffff80000db1a158 x15: ffff0000cfbbb480 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d86ff30 x11: ff808000081c06c8 x10: ffff80000dcdc198 x9 : 3a226953cce2cb00 x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000c01775c x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000016 Call trace: check_wait_context kernel/locking/lockdep.c:4729 [inline] __lock_acquire+0x2b0/0x3084 kernel/locking/lockdep.c:5005 reacquire_held_locks+0x120/0x1c0 kernel/locking/lockdep.c:5193 __lock_release kernel/locking/lockdep.c:5382 [inline] lock_release+0x148/0x2b4 kernel/locking/lockdep.c:5688 __mutex_unlock_slowpath+0x44/0x1cc kernel/locking/mutex.c:907 mutex_unlock+0x24/0x30 kernel/locking/mutex.c:543 hugetlb_no_page+0x284/0xe1c mm/hugetlb.c:5779 hugetlb_fault+0x3a0/0xdfc mm/hugetlb.c:5882 handle_mm_fault+0x904/0xa48 mm/memory.c:5216 __do_page_fault arch/arm64/mm/fault.c:506 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:606 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:689 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:825 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:579 __arch_copy_from_user+0x24/0x1f4 arch/arm64/lib/copy_from_user.S:77 __import_iovec+0x60/0x248 lib/iov_iter.c:1773 import_iovec+0x6c/0x88 lib/iov_iter.c:1838 vfs_writev fs/read_write.c:931 [inline] do_writev+0xf8/0x234 fs/read_write.c:977 __do_sys_writev fs/read_write.c:1050 [inline] __se_sys_writev fs/read_write.c:1047 [inline] __arm64_sys_writev+0x28/0x38 fs/read_write.c:1047 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 41 hardirqs last enabled at (41): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (41): [] _raw_spin_unlock_irq+0x3c/0x70 kernel/locking/spinlock.c:202 hardirqs last disabled at (40): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (40): [] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- BUG: sleeping function called from invalid context at arch/arm64/mm/fault.c:597 in_atomic(): 0, irqs_disabled(): 128, non_block: 0, pid: 3786, name: syz-executor.1 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 41 hardirqs last enabled at (41): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (41): [] _raw_spin_unlock_irq+0x3c/0x70 kernel/locking/spinlock.c:202 hardirqs last disabled at (40): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (40): [] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 3786 Comm: syz-executor.1 Tainted: G W 6.1.0-rc4-syzkaller-00039-g1621b6eaebf7-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156 show_stack+0x2c/0x54 arch/arm64/kernel/stacktrace.c:163 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __might_resched+0x208/0x218 kernel/sched/core.c:9890 __might_sleep+0x48/0x78 kernel/sched/core.c:9819 do_page_fault+0x214/0x79c arch/arm64/mm/fault.c:597 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:689 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:825 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:579 hlock_class kernel/locking/lockdep.c:222 [inline] check_wait_context kernel/locking/lockdep.c:4730 [inline] __lock_acquire+0x2d0/0x3084 kernel/locking/lockdep.c:5005 reacquire_held_locks+0x120/0x1c0 kernel/locking/lockdep.c:5193 __lock_release kernel/locking/lockdep.c:5382 [inline] lock_release+0x148/0x2b4 kernel/locking/lockdep.c:5688 __mutex_unlock_slowpath+0x44/0x1cc kernel/locking/mutex.c:907 mutex_unlock+0x24/0x30 kernel/locking/mutex.c:543 hugetlb_no_page+0x284/0xe1c mm/hugetlb.c:5779 hugetlb_fault+0x3a0/0xdfc mm/hugetlb.c:5882 handle_mm_fault+0x904/0xa48 mm/memory.c:5216 __do_page_fault arch/arm64/mm/fault.c:506 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:606 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:689 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:825 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:579 __arch_copy_from_user+0x24/0x1f4 arch/arm64/lib/copy_from_user.S:77 __import_iovec+0x60/0x248 lib/iov_iter.c:1773 import_iovec+0x6c/0x88 lib/iov_iter.c:1838 vfs_writev fs/read_write.c:931 [inline] do_writev+0xf8/0x234 fs/read_write.c:977 __do_sys_writev fs/read_write.c:1050 [inline] __se_sys_writev fs/read_write.c:1047 [inline] __arm64_sys_writev+0x28/0x38 fs/read_write.c:1047 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 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=000000011345f000 [00000000000000b8] pgd=080000011347a003, p4d=080000011347a003, pud=080000011347e003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3786 Comm: syz-executor.1 Tainted: G W 6.1.0-rc4-syzkaller-00039-g1621b6eaebf7-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2d0/0x3084 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+0x298/0x3084 kernel/locking/lockdep.c:5005 sp : ffff80001301b3e0 x29: ffff80001301b4c0 x28: 0000000000000001 x27: ffff0000cfbbb4a8 x26: ffff0000d342ea78 x25: ffff0000cfbbbeb0 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000001 x19: aaaaaa0001076c5e x18: 00000000000000c0 x17: ffff80000dcdc198 x16: ffff80000db1a158 x15: ffff0000cfbbb480 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d86ff30 x11: ff808000081c06c8 x10: ffff80000dcdc198 x9 : 0000000000050c5e x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000c01775c x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000016 Call trace: hlock_class kernel/locking/lockdep.c:222 [inline] check_wait_context kernel/locking/lockdep.c:4730 [inline] __lock_acquire+0x2d0/0x3084 kernel/locking/lockdep.c:5005 reacquire_held_locks+0x120/0x1c0 kernel/locking/lockdep.c:5193 __lock_release kernel/locking/lockdep.c:5382 [inline] lock_release+0x148/0x2b4 kernel/locking/lockdep.c:5688 __mutex_unlock_slowpath+0x44/0x1cc kernel/locking/mutex.c:907 mutex_unlock+0x24/0x30 kernel/locking/mutex.c:543 hugetlb_no_page+0x284/0xe1c mm/hugetlb.c:5779 hugetlb_fault+0x3a0/0xdfc mm/hugetlb.c:5882 handle_mm_fault+0x904/0xa48 mm/memory.c:5216 __do_page_fault arch/arm64/mm/fault.c:506 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:606 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:689 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:825 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:579 __arch_copy_from_user+0x24/0x1f4 arch/arm64/lib/copy_from_user.S:77 __import_iovec+0x60/0x248 lib/iov_iter.c:1773 import_iovec+0x6c/0x88 lib/iov_iter.c:1838 vfs_writev fs/read_write.c:931 [inline] do_writev+0xf8/0x234 fs/read_write.c:977 __do_sys_writev fs/read_write.c:1050 [inline] __se_sys_writev fs/read_write.c:1047 [inline] __arm64_sys_writev+0x28/0x38 fs/read_write.c:1047 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: d002da0a 91056210 9106614a b9400329 (3942e114) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d002da0a adrp x10, 0x5b42000 4: 91056210 add x16, x16, #0x158 8: 9106614a add x10, x10, #0x198 c: b9400329 ldr w9, [x25] * 10: 3942e114 ldrb w20, [x8, #184] <-- trapping instruction