INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:28368 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_schedule+0xee/0x170 kernel/sched/core.c:8371
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1371
lock_page include/linux/pagemap.h:796 [inline]
__unmap_and_move mm/migrate.c:980 [inline]
unmap_and_move mm/migrate.c:1204 [inline]
migrate_pages+0xa5a/0x3810 mm/migrate.c:1481
compact_zone+0x1abb/0x3860 mm/compaction.c:2399
kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2839
kcompactd+0x86b/0xf30 mm/compaction.c:2941
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Showing all locks held in the system:
1 lock held by kthreadd/2:
3 locks held by kworker/0:0/5:
2 locks held by kworker/u4:0/8:
2 locks held by kworker/u4:1/10:
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
1 lock held by khungtaskd/27:
#0: ffffffff8bb80fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by khugepaged/33:
5 locks held by kworker/u4:2/44:
3 locks held by kworker/1:1H/50:
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c73138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc900012b7db0 ((work_completion)(&(&krcp->page_cache_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffffffff8bca4168 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3181
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
2 locks held by systemd-journal/2968:
#0: ffff8880201767d0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff8880201767d0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
2 locks held by systemd-udevd/2970:
1 lock held by systemd-timesyn/3054:
2 locks held by cron/6444:
#0: ffff88806b2edad0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88806b2edad0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
1 lock held by rsyslogd/6445:
2 locks held by in:imklog/6450:
#0: ffff888020173750 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888020173750 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
2 locks held by syz-fuzzer/6547:
#0: ffff888069c65850 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888069c65850 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
2 locks held by syz-fuzzer/6548:
#0: ffff888069c65850 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888069c65850 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca3560 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
1 lock held by syz-executor.3/15168:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 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+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__zone_watermark_ok+0xc4/0x450 mm/page_alloc.c:3871
Code: 0f 85 1e 02 00 00 48 83 fd 04 0f 87 0f 03 00 00 49 8d 7c ed 28 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 <0f> 85 58 02 00 00 4d 03 44 ed 28 4d 39 c8 0f 8d 60 01 00 00 45 85
RSP: 0018:ffffc900010175f0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff11027fff407
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813fffa038
RBP: 0000000000000002 R08: 0000000000000019 R09: 0000000000000a60
R10: 0000000000000019 R11: 0000000000000001 R12: 0000000000000001
R13: ffff88813fffa000 R14: 0000000000000820 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff5eca4b303 CR3: 000000000b88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
zone_watermark_fast mm/page_alloc.c:3931 [inline]
get_page_from_freelist+0xd5a/0x2f50 mm/page_alloc.c:4103
__alloc_pages_slowpath.constprop.0+0x2eb/0x20d0 mm/page_alloc.c:4914
__alloc_pages+0x412/0x500 mm/page_alloc.c:5382
__alloc_pages_node include/linux/gfp.h:570 [inline]
kmem_getpages mm/slab.c:1377 [inline]
cache_grow_begin+0x75/0x470 mm/slab.c:2593
fallback_alloc+0x1e4/0x2e0 mm/slab.c:3140
slab_alloc_node mm/slab.c:3254 [inline]
kmem_cache_alloc_node_trace+0x187/0x5b0 mm/slab.c:3617
__do_kmalloc_node mm/slab.c:3639 [inline]
__kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3654
kmalloc_reserve net/core/skbuff.c:354 [inline]
__alloc_skb+0xde/0x340 net/core/skbuff.c:426
alloc_skb include/linux/skbuff.h:1126 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:745 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:802 [inline]
nsim_dev_trap_report_work+0x29a/0xbc0 drivers/net/netdevsim/dev.c:843
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
----------------
Code disassembly (best guess):
0: 0f 85 1e 02 00 00 jne 0x224
6: 48 83 fd 04 cmp $0x4,%rbp
a: 0f 87 0f 03 00 00 ja 0x31f
10: 49 8d 7c ed 28 lea 0x28(%r13,%rbp,8),%rdi
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 48 89 f9 mov %rdi,%rcx
22: 48 c1 e9 03 shr $0x3,%rcx
26: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
* 2a: 0f 85 58 02 00 00 jne 0x288 <-- trapping instruction
30: 4d 03 44 ed 28 add 0x28(%r13,%rbp,8),%r8
35: 4d 39 c8 cmp %r9,%r8
38: 0f 8d 60 01 00 00 jge 0x19e
3e: 45 rex.RB
3f: 85 .byte 0x85