INFO: task syz-executor.5:14082 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:27088 pid:14082 ppid:16358  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5197 [inline]
 __schedule+0xae5/0x52c0 kernel/sched/core.c:6509
 schedule+0xda/0x1b0 kernel/sched/core.c:6585
 io_schedule+0xba/0x130 kernel/sched/core.c:8729
 folio_wait_bit_common+0x49f/0xa20 mm/filemap.c:1295
 folio_put_wait_locked mm/filemap.c:1464 [inline]
 do_read_cache_folio+0x2c0/0x510 mm/filemap.c:3508
 read_mapping_folio include/linux/pagemap.h:762 [inline]
 read_part_sector+0xf6/0x440 block/partitions/core.c:714
 adfspart_check_POWERTEC+0x93/0x680 block/partitions/acorn.c:454
 check_partition block/partitions/core.c:146 [inline]
 blk_add_partitions block/partitions/core.c:599 [inline]
 bdev_disk_changed block/partitions/core.c:685 [inline]
 bdev_disk_changed+0x629/0xf60 block/partitions/core.c:652
 blkdev_get_whole+0x18a/0x2d0 block/bdev.c:684
 blkdev_get_by_dev.part.0+0x5ec/0xb90 block/bdev.c:821
 blkdev_get_by_dev+0x6b/0x80 block/bdev.c:855
 blkdev_open+0x13c/0x2c0 block/fops.c:485
 do_dentry_open+0x6cc/0x13f0 fs/open.c:880
 do_open fs/namei.c:3557 [inline]
 path_openat+0x1c92/0x28f0 fs/namei.c:3691
 do_filp_open+0x1b6/0x400 fs/namei.c:3718
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1308
 do_sys_open fs/open.c:1324 [inline]
 __do_sys_openat fs/open.c:1340 [inline]
 __se_sys_openat fs/open.c:1335 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1335
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f699583c194
RSP: 002b:00007f6996a28ca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f699583c194
RDX: 0000000000000000 RSI: 00007f6996a28d40 RDI: 00000000ffffff9c
RBP: 00007f6996a28d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007ffc044fd65f R14: 00007f6996a29300 R15: 0000000000022000
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:227 [inline]
 watchdog+0xcf7/0xfd0 kernel/hung_task.c:384
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4274 Comm: kworker/u4:7 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:229
Code: 01 00 00 49 89 f8 65 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 94 15 00 00 85 c0 74 4f 8b 82 70 15 00 00 <83> f8 03 75 44 48 8b 82 78 15 00 00 8b 92 74 15 00 00 48 8b 38 48
RSP: 0018:ffffc9000c7df940 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff817179ef
RDX: ffff88802f538000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006b5d4b8 CR3: 000000000bc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 smp_call_function_many_cond+0x9ef/0x1430 kernel/smp.c:931
 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1153
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1302 [inline]
 text_poke_bp_batch+0x59e/0x6c0 arch/x86/kernel/alternative.c:1559
 text_poke_flush arch/x86/kernel/alternative.c:1660 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:1657 [inline]
 text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1667
 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x32f/0x410 kernel/jump_label.c:801
 static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
 static_key_disable+0x16/0x20 kernel/jump_label.c:215
 toggle_allocation_gate mm/kfence/core.c:825 [inline]
 toggle_allocation_gate+0x183/0x390 mm/kfence/core.c:803
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>