loop0: detected capacity change from 0 to 2048
 loop0: p1 < > p4
loop0: p4 size 8388608 extends beyond EOD, truncated
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5354 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x414/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4133 [inline]
 slab_alloc_node mm/slub.c:4209 [inline]
 __do_kmalloc_node mm/slub.c:4364 [inline]
 __kmalloc_noprof+0xcb/0x4f0 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 allocate_probes kernel/tracepoint.c:99 [inline]
 func_add kernel/tracepoint.c:159 [inline]
 tracepoint_add_func+0x35e/0xa10 kernel/tracepoint.c:292
 tracepoint_probe_register_prio kernel/tracepoint.c:464 [inline]
 tracepoint_probe_register+0x5d/0x90 kernel/tracepoint.c:484
 register_trace_block_rq_insert include/trace/events/block.h:238 [inline]
 blk_register_tracepoints kernel/trace/blktrace.c:1059 [inline]
 get_probe_ref+0x4f/0x3c0 kernel/trace/blktrace.c:337
 do_blk_trace_setup+0x7d2/0x980 kernel/trace/blktrace.c:593
 blk_trace_setup+0x116/0x1f0 kernel/trace/blktrace.c:614
 blk_trace_ioctl+0x181/0x430 kernel/trace/blktrace.c:712
 blkdev_ioctl+0x416/0x6d0 block/ioctl.c:694
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f424258ebe9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42433de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f42427b5fa0 RCX: 00007f424258ebe9
RDX: 00002000000008c0 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f42433de090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f42427b6038 R14: 00007f42427b5fa0 R15: 00007ffd8d3ffff8
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5354 at kernel/trace/blktrace.c:1060 blk_register_tracepoints kernel/trace/blktrace.c:1060 [inline]
WARNING: CPU: 0 PID: 5354 at kernel/trace/blktrace.c:1060 get_probe_ref+0x2f0/0x3c0 kernel/trace/blktrace.c:337
Modules linked in:
CPU: 0 UID: 0 PID: 5354 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:blk_register_tracepoints kernel/trace/blktrace.c:1060 [inline]
RIP: 0010:get_probe_ref+0x2f0/0x3c0 kernel/trace/blktrace.c:337
Code: c3 31 ff 89 c6 e8 f0 ea f7 ff 85 db 0f 85 d6 00 00 00 e8 a3 e6 f7 ff 48 c7 c7 00 b7 19 8e 5b e9 86 f3 b4 09 e8 91 e6 f7 ff 90 <0f> 0b 90 e9 6f fd ff ff e8 83 e6 f7 ff 90 0f 0b 90 e9 8e fd ff ff
RSP: 0018:ffffc9000d60fa78 EFLAGS: 00010293
RAX: ffffffff81c7d44f RBX: 00000000fffffff4 RCX: ffff88801fb52440
RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000
RBP: 1ffff110065e645a R08: ffffc9000d60f9c7 R09: 1ffff92001ac1f38
R10: dffffc0000000000 R11: fffff52001ac1f39 R12: 0000000000000081
R13: dffffc0000000000 R14: ffff88801140deb0 R15: ffff88801140de80
FS:  00007f42433de6c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d7b9fb5b90 CR3: 0000000043660000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 do_blk_trace_setup+0x7d2/0x980 kernel/trace/blktrace.c:593
 blk_trace_setup+0x116/0x1f0 kernel/trace/blktrace.c:614
 blk_trace_ioctl+0x181/0x430 kernel/trace/blktrace.c:712
 blkdev_ioctl+0x416/0x6d0 block/ioctl.c:694
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f424258ebe9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f42433de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f42427b5fa0 RCX: 00007f424258ebe9
RDX: 00002000000008c0 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f42433de090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f42427b6038 R14: 00007f42427b5fa0 R15: 00007ffd8d3ffff8
 </TASK>