workqueue: Failed to create a rescuer kthread for wq "kcopyd": -EINTR
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BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:82 [inline]
BUG: KASAN: null-ptr-deref in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: null-ptr-deref in dm_kcopyd_client_destroy+0xa5/0x420 drivers/md/dm-kcopyd.c:980
Read of size 4 at addr 0000000000000174 by task syz.1.789/9209

CPU: 1 UID: 0 PID: 9209 Comm: syz.1.789 Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:186 [inline]
 kasan_check_range+0x10f/0x1e0 mm/kasan/generic.c:200
 instrument_atomic_read include/linux/instrumented.h:82 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 dm_kcopyd_client_destroy+0xa5/0x420 drivers/md/dm-kcopyd.c:980
 __destroy+0x191/0x3c0 drivers/md/dm-cache-target.c:1973
 cache_create drivers/md/dm-cache-target.c:2604 [inline]
 cache_ctr+0x2f7c/0x3a80 drivers/md/dm-cache-target.c:2649
 dm_table_add_target+0x58b/0xee0 drivers/md/dm-table.c:749
 populate_table drivers/md/dm-ioctl.c:1602 [inline]
 table_load+0x3b9/0x7b0 drivers/md/dm-ioctl.c:1645
 ctl_ioctl+0x4d2/0xcc0 drivers/md/dm-ioctl.c:2221
 dm_ctl_ioctl+0x22/0x30 drivers/md/dm-ioctl.c:2243
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f331cf9f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f331df0b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f331d225fa0 RCX: 00007f331cf9f559
RDX: 0000200000000200 RSI: 00000000c138fd09 RDI: 0000000000000003
RBP: 00007f331d036b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f331d226038 R14: 00007f331d225fa0 R15: 00007ffc25fc5678
 </TASK>
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