Oops: general protection fault, probably for non-canonical address 0xdffffc00000000e6: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000730-0x0000000000000737]
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:f_midi2_stop_eps+0x28e/0x4d0
Code: 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 c7 86 63 fa 41 bf 30 07 00 00 4d 03 3e 4c 89 f8 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 0f 85 12 02 00 00 41 8b 1f 31 ff 89 de e8 59
RSP: 0018:ffffc90000007930 EFLAGS: 00010002
RAX: 00000000000000e6 RBX: ffff88810b590120 RCX: ffffffff8e88ef40
RDX: 0000000000000100 RSI: ffffffff8c4be160 RDI: ffffffff8c4be120
RBP: ffff88810b590100 R08: 00000000ef841bdf R09: 00000000533aa5c8
R10: 0000000000000010 R11: ffffffff8eb59ca0 R12: ffff88810b590730
R13: dffffc0000000000 R14: ffff88810b590128 R15: 0000000000000730
FS:  0000000000000000(0000) GS:ffff88818d94d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f993bb524c0 CR3: 000000016d00c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 f_midi2_set_alt+0x11c/0xf00
 composite_setup+0x1ffd/0x3480
 configfs_composite_setup+0xc7/0x100
 dummy_timer+0x2f43/0x4cf0
 __hrtimer_run_queues+0x3bc/0xa10
 hrtimer_run_softirq+0x17a/0x240
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:pv_native_safe_halt+0xf/0x20
Code: 3c 7e 02 e9 d3 06 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d b3 dd 17 00 fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8e807de0 EFLAGS: 00000202
RAX: 000000000019e357 RBX: ffffffff819b4060 RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8e22dd4d RDI: ffffffff8c4be180
RBP: ffffffff8e807eb8 R08: ffff8881210338db R09: 1ffff1102420671b
R10: dffffc0000000000 R11: ffffed102420671c R12: 0000000000000000
R13: 1ffffffff1d11de8 R14: 1ffffffff1d00fc4 R15: dffffc0000000000
 default_idle+0x9/0x20
 default_idle_call+0x72/0xb0
 do_idle+0x2e0/0x540
 cpu_startup_entry+0x43/0x60
 rest_init+0x2de/0x300
 start_kernel+0x392/0x3e0
 x86_64_start_reservations+0x24/0x30
 x86_64_start_kernel+0x137/0x1b0
 common_startup_64+0x13e/0x157
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f_midi2_stop_eps+0x28e/0x4d0
Code: 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 c7 86 63 fa 41 bf 30 07 00 00 4d 03 3e 4c 89 f8 48 c1 e8 03 48 89 44 24 18 <42> 0f b6 04 28 84 c0 0f 85 12 02 00 00 41 8b 1f 31 ff 89 de e8 59
RSP: 0018:ffffc90000007930 EFLAGS: 00010002
RAX: 00000000000000e6 RBX: ffff88810b590120 RCX: ffffffff8e88ef40
RDX: 0000000000000100 RSI: ffffffff8c4be160 RDI: ffffffff8c4be120
RBP: ffff88810b590100 R08: 00000000ef841bdf R09: 00000000533aa5c8
R10: 0000000000000010 R11: ffffffff8eb59ca0 R12: ffff88810b590730
R13: dffffc0000000000 R14: ffff88810b590128 R15: 0000000000000730
FS:  0000000000000000(0000) GS:ffff88818d94d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f993bb524c0 CR3: 000000016d00c000 CR4: 00000000000006f0
