BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 11076, name: syz-executor.2
2 locks held by syz-executor.2/11076:
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline]
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pte_range mm/memory.c:1052 [inline]
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pmd_range mm/memory.c:1193 [inline]
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pud_range mm/memory.c:1222 [inline]
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_p4d_range mm/memory.c:1243 [inline]
 #0: 0000000097fe15b3 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: unmap_page_range+0x6c3/0x1960 mm/memory.c:1264
 #1: 00000000380b99ff ((&toneport->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #1: 00000000380b99ff ((&toneport->timer)){+.-.}, at: call_timer_fn+0xc9/0x5e0 kernel/time/timer.c:1315
CPU: 1 PID: 11076 Comm: syz-executor.2 Not tainted 5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 ___might_sleep.cold+0x10f/0x129 kernel/sched/core.c:6190
 __mutex_lock_common kernel/locking/mutex.c:908 [inline]
 __mutex_lock+0xc8/0x12b0 kernel/locking/mutex.c:1072
 line6_pcm_acquire+0x30/0x210 sound/usb/line6/pcm.c:311
 call_timer_fn+0x15c/0x5e0 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x586/0x1400 kernel/time/timer.c:1694
 __do_softirq+0x21f/0x8bc kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x17c/0x1a0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xf1/0x490 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 kernel/kcov.c:174
Code: 00 00 e9 0b ec ff ff 90 48 8b 34 24 65 48 8b 04 25 c0 de 01 00 65 8b 15 dc 75 c5 7e 81 e2 00 01 1f 00 75 2b 8b 90 10 12 00 00 <83> fa 02 75 20 48 8b 88 18 12 00 00 8b 80 14 12 00 00 48 8b 11 48
RSP: 0018:ffff8881caa076f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8881d0ad0000 RBX: ffff8881caa079f0 RCX: ffffffff815ad59e
RDX: 0000000000000000 RSI: ffffffff815ad5ac RDI: 0000000000000004
RBP: 00000000000001fe R08: ffff8881d0ad0000 R09: fffff94000db8e6f
R10: fffff94000db8e6e R11: ffffea0006dc7373 R12: 0000000000000000
R13: 0000000000000012 R14: ffffea0006dc7340 R15: ffff8881caa07a18
 __tlb_remove_page_size+0x17c/0x4c0 mm/mmu_gather.c:137
 __tlb_remove_page include/asm-generic/tlb.h:187 [inline]
 zap_pte_range mm/memory.c:1094 [inline]
 zap_pmd_range mm/memory.c:1193 [inline]
 zap_pud_range mm/memory.c:1222 [inline]
 zap_p4d_range mm/memory.c:1243 [inline]
 unmap_page_range+0xc4a/0x1960 mm/memory.c:1264
 unmap_single_vma+0x196/0x300 mm/memory.c:1309
 unmap_vmas+0x106/0x240 mm/memory.c:1340
 exit_mmap+0x280/0x4d0 mm/mmap.c:3138
 __mmput kernel/fork.c:1046 [inline]
 mmput+0xce/0x3d0 kernel/fork.c:1067
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x7eb/0x2d10 kernel/exit.c:863
 do_group_exit+0x125/0x350 kernel/exit.c:980
 get_signal+0x39e/0x1cb0 kernel/signal.c:2577
 do_signal+0x88/0x14c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x195/0x1f0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x3ed/0x500 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4590e7
Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f409227b638 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00007f409227bc10 RCX: 00000000004590e7
RDX: 00007f409227b6c0 RSI: 00000000c0085502 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000b
R10: 0000000000000075 R11: 0000000000000246 R12: 00007f409227c6d4
R13: 00000000004be86a R14: 00000000004dea00 R15: 00000000ffffffff
==================================================================
BUG: KASAN: null-ptr-deref in memset include/linux/string.h:337 [inline]
BUG: KASAN: null-ptr-deref in submit_audio_out_urb+0x919/0x1780 sound/usb/line6/playback.c:246
Write of size 20 at addr 0000000000000010 by task syz-executor.2/11076

CPU: 1 PID: 11076 Comm: syz-executor.2 Tainted: G        W         5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 kasan_report.cold+0x5/0x35 mm/kasan/report.c:321
 memset+0x20/0x40 mm/kasan/common.c:115
 memset include/linux/string.h:337 [inline]
 submit_audio_out_urb+0x919/0x1780 sound/usb/line6/playback.c:246
 line6_submit_audio_out_all_urbs+0xc9/0x120 sound/usb/line6/playback.c:295
 line6_stream_start+0x156/0x1f0 sound/usb/line6/pcm.c:199
 line6_pcm_acquire+0x134/0x210 sound/usb/line6/pcm.c:322
 call_timer_fn+0x15c/0x5e0 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x586/0x1400 kernel/time/timer.c:1694
 __do_softirq+0x21f/0x8bc kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x17c/0x1a0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xf1/0x490 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 kernel/kcov.c:174
Code: 00 00 e9 0b ec ff ff 90 48 8b 34 24 65 48 8b 04 25 c0 de 01 00 65 8b 15 dc 75 c5 7e 81 e2 00 01 1f 00 75 2b 8b 90 10 12 00 00 <83> fa 02 75 20 48 8b 88 18 12 00 00 8b 80 14 12 00 00 48 8b 11 48
RSP: 0018:ffff8881caa076f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8881d0ad0000 RBX: ffff8881caa079f0 RCX: ffffffff815ad59e
RDX: 0000000000000000 RSI: ffffffff815ad5ac RDI: 0000000000000004
RBP: 00000000000001fe R08: ffff8881d0ad0000 R09: fffff94000db8e6f
R10: fffff94000db8e6e R11: ffffea0006dc7373 R12: 0000000000000000
R13: 0000000000000012 R14: ffffea0006dc7340 R15: ffff8881caa07a18
 __tlb_remove_page_size+0x17c/0x4c0 mm/mmu_gather.c:137
 __tlb_remove_page include/asm-generic/tlb.h:187 [inline]
 zap_pte_range mm/memory.c:1094 [inline]
 zap_pmd_range mm/memory.c:1193 [inline]
 zap_pud_range mm/memory.c:1222 [inline]
 zap_p4d_range mm/memory.c:1243 [inline]
 unmap_page_range+0xc4a/0x1960 mm/memory.c:1264
 unmap_single_vma+0x196/0x300 mm/memory.c:1309
 unmap_vmas+0x106/0x240 mm/memory.c:1340
 exit_mmap+0x280/0x4d0 mm/mmap.c:3138
 __mmput kernel/fork.c:1046 [inline]
 mmput+0xce/0x3d0 kernel/fork.c:1067
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x7eb/0x2d10 kernel/exit.c:863
 do_group_exit+0x125/0x350 kernel/exit.c:980
 get_signal+0x39e/0x1cb0 kernel/signal.c:2577
 do_signal+0x88/0x14c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x195/0x1f0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x3ed/0x500 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4590e7
Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f409227b638 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00007f409227bc10 RCX: 00000000004590e7
RDX: 00007f409227b6c0 RSI: 00000000c0085502 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000b
R10: 0000000000000075 R11: 0000000000000246 R12: 00007f409227c6d4
R13: 00000000004be86a R14: 00000000004dea00 R15: 00000000ffffffff
==================================================================