INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.15.0-rc5-next-20211018-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:27880 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
schedule+0xd2/0x260 kernel/sched/core.c:6319
io_schedule+0xba/0x130 kernel/sched/core.c:8363
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1364
lock_page include/linux/pagemap.h:747 [inline]
__unmap_and_move mm/migrate.c:980 [inline]
unmap_and_move mm/migrate.c:1204 [inline]
migrate_pages+0xa5a/0x3880 mm/migrate.c:1481
compact_zone+0x1abb/0x3860 mm/compaction.c:2393
kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2833
kcompactd+0x86b/0xf30 mm/compaction.c:2935
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz-executor.2:12890 can't die for more than 145 seconds.
task:syz-executor.2 state:R running task stack:26760 pid:12890 ppid: 12441 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:4965 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6246
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
__cond_resched+0x13/0x20 kernel/sched/core.c:8125
_cond_resched include/linux/sched.h:2027 [inline]
shrink_lruvec+0xf8c/0x25b0 mm/vmscan.c:2854
shrink_node_memcgs mm/vmscan.c:3038 [inline]
shrink_node+0x858/0x1eb0 mm/vmscan.c:3161
shrink_zones mm/vmscan.c:3364 [inline]
do_try_to_free_pages+0x386/0x1480 mm/vmscan.c:3419
try_to_free_pages+0x29f/0x750 mm/vmscan.c:3654
__perform_reclaim mm/page_alloc.c:4586 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:4607 [inline]
__alloc_pages_slowpath.constprop.0+0xac7/0x2290 mm/page_alloc.c:5024
__alloc_pages+0x412/0x500 mm/page_alloc.c:5399
alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
folio_alloc+0x1c/0x70 mm/mempolicy.c:2201
filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:1029
__page_cache_alloc include/linux/pagemap.h:325 [inline]
page_cache_ra_unbounded+0x36a/0x940 mm/readahead.c:215
do_page_cache_ra+0xf9/0x140 mm/readahead.c:268
do_sync_mmap_readahead mm/filemap.c:2986 [inline]
filemap_fault+0x1562/0x26d0 mm/filemap.c:3079
__do_fault+0x10d/0x4d0 mm/memory.c:3849
do_shared_fault mm/memory.c:4210 [inline]
do_fault mm/memory.c:4288 [inline]
handle_pte_fault mm/memory.c:4542 [inline]
__handle_mm_fault+0x25ad/0x5120 mm/memory.c:4677
handle_mm_fault+0x1c8/0x790 mm/memory.c:4775
do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7fcb0df8ce46
RSP: 002b:00007ffe7cee5c48 EFLAGS: 00010202
RAX: 0000000020000080 RBX: 0000000000000000 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000000020000080
RBP: 00007ffe7cee5d08 R08: 00007fcb0e499000 R09: 0000001b2d422298
R10: 0000000000000605 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000003e8 R14: 00007fcb0e094f60 R15: 00000000002746ad
Showing all locks held in the system:
3 locks held by kworker/u4:1/10:
1 lock held by khungtaskd/27:
#0: ffffffff8bb835e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
3 locks held by systemd-journal/2949:
1 lock held by systemd-udevd/2971:
3 locks held by kworker/1:4/2980:
1 lock held by systemd-timesyn/3058:
1 lock held by in:imklog/6234:
4 locks held by rs:main Q:Reg/6235:
1 lock held by cron/6237:
2 locks held by syz-fuzzer/6541:
2 locks held by syz-fuzzer/9752:
1 lock held by syz-executor.5/9908:
#0: ffffffff8bca73c8 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3179
3 locks held by kworker/0:0/10790:
1 lock held by syz-executor.2/12890:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc5-next-20211018-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12872 Comm: kworker/u4:3 Not tainted 5.15.0-rc5-next-20211018-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x30/0x180 mm/kasan/generic.c:189
Code: 01 00 00 49 89 f9 41 54 44 0f b6 c2 49 01 f1 55 53 0f 82 18 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 05 01 00 00 <49> 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1
RSP: 0018:ffffc900063577f0 EFLAGS: 00000012
RAX: ffff7fffffffffff RBX: ffffffff906e0300 RCX: ffffffff815c399c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ff47a00
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff47a08
R10: fffffbfff1fe8f40 R11: 0000000000000000 R12: ffff88801bcd8ab8
R13: ffff88801bcd8000 R14: 0000000000040000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0be6d7b303 CR3: 000000000b88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:199 [inline]
check_wait_context kernel/locking/lockdep.c:4701 [inline]
__lock_acquire+0x47c/0x54a0 kernel/locking/lockdep.c:4977
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
__debug_object_init+0xb1/0xd10 lib/debugobjects.c:569
init_timer_on_stack_key kernel/time/timer.c:752 [inline]
schedule_timeout+0xf2/0x2a0 kernel/time/timer.c:1879
toggle_allocation_gate mm/kfence/core.c:738 [inline]
toggle_allocation_gate+0x305/0x390 mm/kfence/core.c:723
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297
worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 01 00 add %eax,(%rax)
2: 00 49 89 add %cl,-0x77(%rcx)
5: f9 stc
6: 41 54 push %r12
8: 44 0f b6 c2 movzbl %dl,%r8d
c: 49 01 f1 add %rsi,%r9
f: 55 push %rbp
10: 53 push %rbx
11: 0f 82 18 01 00 00 jb 0x12f
17: 48 b8 ff ff ff ff ff movabs $0xffff7fffffffffff,%rax
1e: 7f ff ff
21: 48 39 c7 cmp %rax,%rdi
24: 0f 86 05 01 00 00 jbe 0x12f
* 2a: 49 83 e9 01 sub $0x1,%r9 <-- trapping instruction
2e: 48 89 fd mov %rdi,%rbp
31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
38: fc ff df
3b: 4d 89 ca mov %r9,%r10
3e: 48 rex.W
3f: c1 .byte 0xc1