general protection fault, probably for non-canonical address 0xdffffe101ffffdd0: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00001080ffffee80-0x00001080ffffee87]
CPU: 0 PID: 1 Comm: systemd Not tainted 5.12.0-rc8-next-20210423-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:931 [inline]
RIP: 0010:__mutex_lock+0xf6/0x1120 kernel/locking/mutex.c:1096
Code: d0 7c 08 84 d2 0f 85 28 0d 00 00 8b 15 93 65 5f 07 85 d2 75 29 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 2f 0f 00 00 48 3b 6d 60 0f 85 a5 0a 00 00 bf 01
RSP: 0018:ffffc90000c67a10 EFLAGS: 00010202

RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 000002101ffffdd0 RSI: 0000000000000000 RDI: 00001080ffffee80
RBP: 00001080ffffee20 R08: ffffffff816f4551 R09: 0000000000000100
R10: ffffffff81f09333 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88801a5d8580 R15: 0000000000000000
FS:  00007f87b872e500(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560f121d1c80 CR3: 00000000249f1000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cgroup_pidlist_start+0x131/0x4b0 kernel/cgroup/cgroup-v1.c:402
 kernfs_seq_start+0xd7/0x260 fs/kernfs/file.c:118
 seq_read_iter+0x2c6/0x1220 fs/seq_file.c:222
 kernfs_fop_read_iter+0x44f/0x5f0 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2108 [inline]
 new_sync_read+0x41e/0x6e0 fs/read_write.c:415
 vfs_read+0x35c/0x570 fs/read_write.c:496
 ksys_read+0x12d/0x250 fs/read_write.c:634
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f87b6cf792d
Code: 2d 2c 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 de 9b 01 00 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 27 9c 01 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc60248bc0 EFLAGS: 00000293
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000560f122c2270 RCX: 00007f87b6cf792d
RDX: 0000000000001000 RSI: 0000560f122d9460 RDI: 0000000000000014
RBP: 0000000000000d68 R08: 0000000000000003 R09: 0000000000001010
R10: 00000000000003a0 R11: 0000000000000293 R12: 00007f87b6fb2440
R13: 00007f87b6fb1900 R14: 00000000ffffffff R15: 0000000000000000
Modules linked in: