INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:25872 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
io_schedule+0x83/0x100 kernel/sched/core.c:8371
folio_wait_bit_common+0x8aa/0xe00 mm/filemap.c:1371
lock_page include/linux/pagemap.h:780 [inline]
__unmap_and_move+0x9d9/0xda0 mm/migrate.c:980
unmap_and_move+0x321/0xd70 mm/migrate.c:1204
migrate_pages+0x562/0x16f0 mm/migrate.c:1481
compact_zone+0x2d23/0x3d10 mm/compaction.c:2399
kcompactd_do_work mm/compaction.c:2839 [inline]
kcompactd+0x937/0x2920 mm/compaction.c:2941
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:3/74:
1 lock held by kswapd0/98:
2 locks held by kswapd1/99:
2 locks held by systemd-journal/2963:
#0: ffff888017780f88 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888017780f88 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x47d/0x1630 mm/filemap.c:3096
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0x10fe/0x2530 mm/page_alloc.c:5007
1 lock held by systemd-timesyn/3060:
2 locks held by in:imklog/6194:
#0: ffff888079ef2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff888079ef2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x2d8/0x10c0 arch/x86/mm/fault.c:1338
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8cbe1500 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0x10fe/0x2530 mm/page_alloc.c:5007
1 lock held by cron/6176:
2 locks held by syz-fuzzer/6499:
1 lock held by syz-fuzzer/6501:
3 locks held by kworker/0:2/9508:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000521fd20 ((work_completion)(&(&krcp->page_cache_work)->work)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffffffff8cbe1d48 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x58/0x690 mm/page_alloc.c:3181
3 locks held by kworker/1:0/16456:
1 lock held by syz-executor.2/20214:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2963 Comm: systemd-journal Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_check_range+0x2/0x2f0 mm/kasan/generic.c:188
Code: 48 89 c7 e8 60 26 42 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 57 <41> 56 41 55 41 54 53 b0 01 48 85 f6 0f 84 0d 02 00 00 48 89 fb 48
RSP: 0018:ffffc900027ce630 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81b3dc00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00066b5a00
RBP: ffffc900027ce9f0 R08: ffffffff81b3dbdb R09: fffff94000cd6b41
R10: fffff94000cd6b41 R11: 0000000000000000 R12: ffffea00066b5a00
R13: ffffea00066b59c8 R14: dffffc0000000000 R15: 057ff00000000001
FS: 00007fdb738c38c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5dc62b2000 CR3: 000000007ae78000 CR4: 00000000003506e0
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]
PageLRU include/linux/page-flags.h:425 [inline]
shrink_page_list+0x31c0/0x73e0 mm/vmscan.c:1898
shrink_inactive_list+0x457/0xad0 mm/vmscan.c:2394
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0x49a/0xc90 mm/vmscan.c:2940
shrink_node_memcgs+0x358/0x700 mm/vmscan.c:3129
shrink_node+0xdc2/0x1ee0 mm/vmscan.c:3252
shrink_zones+0x482/0xb90 mm/vmscan.c:3485
do_try_to_free_pages+0x22a/0xce0 mm/vmscan.c:3541
try_to_free_pages+0x3e3/0xc60 mm/vmscan.c:3776
__perform_reclaim mm/page_alloc.c:4588 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
__alloc_pages_slowpath+0x1197/0x2530 mm/page_alloc.c:5007
__alloc_pages+0x3d0/0x580 mm/page_alloc.c:5382
folio_alloc+0x1a/0x50 mm/mempolicy.c:2201
filemap_alloc_folio+0x7e/0x1c0 mm/filemap.c:1036
__filemap_get_folio+0x7ff/0xf10 mm/filemap.c:1951
pagecache_get_page+0x28/0x170 mm/folio-compat.c:125
filemap_fault+0x4c5/0x1630 mm/filemap.c:3099
__do_fault+0x130/0x420 mm/memory.c:3849
do_read_fault+0x3be/0x650 mm/memory.c:4164
do_fault mm/memory.c:4293 [inline]
handle_pte_fault mm/memory.c:4551 [inline]
__handle_mm_fault mm/memory.c:4686 [inline]
handle_mm_fault+0x1849/0x2560 mm/memory.c:4784
do_user_addr_fault+0x8cc/0x10c0 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0xa1/0x1e0 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x1e/0x30
RIP: 0033:0x7fdb734cda60
Code: Unable to access opcode bytes at RIP 0x7fdb734cda36.
RSP: 002b:00007ffe17c47708 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000563ebe3721e0 RCX: 00007fdb72b8c2e3
RDX: 0000000000000013 RSI: 00007ffe17c47710 RDI: 0000563ebe372310
RBP: 00007ffe17c47900 R08: 00007ffe17d4e080 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe17c47710
R13: 0000000000000001 R14: 0000000000000001 R15: 0005d1417cdd85b2
----------------
Code disassembly (best guess):
0: 48 89 c7 mov %rax,%rdi
3: e8 60 26 42 08 callq 0x8422668
8: 31 c0 xor %eax,%eax
a: c3 retq
b: 0f 0b ud2
d: b8 ea ff ff ff mov $0xffffffea,%eax
12: c3 retq
13: 0f 0b ud2
15: b8 ea ff ff ff mov $0xffffffea,%eax
1a: c3 retq
1b: cc int3
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: cc int3
21: cc int3
22: cc int3
23: cc int3
24: cc int3
25: cc int3
26: cc int3
27: cc int3
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 55 push %r13
2e: 41 54 push %r12
30: 53 push %rbx
31: b0 01 mov $0x1,%al
33: 48 85 f6 test %rsi,%rsi
36: 0f 84 0d 02 00 00 je 0x249
3c: 48 89 fb mov %rdi,%rbx
3f: 48 rex.W