binder: 19234:19235 ioctl c0306201 20001480 returned -14 BUG: sleeping function called from invalid context at lib/usercopy.c:28 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 19235, name: syz-executor.4 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by syz-executor.4/19235: #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:360 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: _binder_inner_proc_lock drivers/android/binder.c:283 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: binder_ioctl_get_extended_error drivers/android/binder.c:5167 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: binder_ioctl+0x798/0x6d80 drivers/android/binder.c:5390 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 19235 Comm: syz-executor.4 Not tainted 5.18.0-rc6-next-20220516-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9791 __might_fault+0x6c/0x170 mm/memory.c:5567 _copy_to_user+0x25/0x140 lib/usercopy.c:28 copy_to_user include/linux/uaccess.h:160 [inline] binder_ioctl_get_extended_error drivers/android/binder.c:5168 [inline] binder_ioctl+0x7aa/0x6d80 drivers/android/binder.c:5390 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f7994e890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f79960c2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7994f9bf60 RCX: 00007f7994e890e9 RDX: 0000000020000440 RSI: 00000000c00c6211 RDI: 0000000000000004 RBP: 00007f7994ee308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd314a72cf R14: 00007f79960c2300 R15: 0000000000022000 ============================= [ BUG: Invalid wait context ] 5.18.0-rc6-next-20220516-syzkaller #0 Tainted: G W ----------------------------- syz-executor.4/19235 is trying to lock: ffff88807d61d858 (&mm->mmap_lock#2){++++}-{3:3}, at: __might_fault+0xa1/0x170 mm/memory.c:5569 other info that might help us debug this: context-{4:4} 1 lock held by syz-executor.4/19235: #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:360 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: _binder_inner_proc_lock drivers/android/binder.c:283 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: binder_ioctl_get_extended_error drivers/android/binder.c:5167 [inline] #0: ffff888074162af8 (&proc->inner_lock){+.+.}-{2:2}, at: binder_ioctl+0x798/0x6d80 drivers/android/binder.c:5390 stack backtrace: CPU: 0 PID: 19235 Comm: syz-executor.4 Tainted: G W 5.18.0-rc6-next-20220516-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_lock_invalid_wait_context kernel/locking/lockdep.c:4705 [inline] check_wait_context kernel/locking/lockdep.c:4766 [inline] __lock_acquire.cold+0xdb/0x3b4 kernel/locking/lockdep.c:5003 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __might_fault mm/memory.c:5570 [inline] __might_fault+0x104/0x170 mm/memory.c:5563 _copy_to_user+0x25/0x140 lib/usercopy.c:28 copy_to_user include/linux/uaccess.h:160 [inline] binder_ioctl_get_extended_error drivers/android/binder.c:5168 [inline] binder_ioctl+0x7aa/0x6d80 drivers/android/binder.c:5390 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f7994e890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f79960c2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7994f9bf60 RCX: 00007f7994e890e9 RDX: 0000000020000440 RSI: 00000000c00c6211 RDI: 0000000000000004 RBP: 00007f7994ee308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd314a72cf R14: 00007f79960c2300 R15: 0000000000022000