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:27664 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
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
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by khugepaged/33:
#0: ffffffff8bc68d68 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:798
1 lock held by kswapd0/96:
1 lock held by kswapd1/97:
1 lock held by systemd-journal/2963:
2 locks held by systemd-timesyn/3055:
1 lock held by in:imklog/6425:
2 locks held by syz-fuzzer/6520:
2 locks held by syz-fuzzer/6523:
#0: ffff88806e795550 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88806e795550 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
#1: ffffffff8bca8420 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline]
#1: ffffffff8bca8420 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
#1: ffffffff8bca8420 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007
3 locks held by kworker/1:13/31786:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000e32fdb0 ((work_completion)(&(&krcp->page_cache_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffffffff8bca9028 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3181
3 locks held by kworker/0:16/3352:
1 lock held by syz-executor.4/8768:
#0: ffff888145d14448 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888145d14448 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
=============================================
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:
__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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6425 Comm: in:imklog Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:91 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5613 [inline]
RIP: 0010:lock_acquire+0x148/0x510 kernel/locking/lockdep.c:5602
Code: 00 48 8d ba 5c 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 <84> c9 0f 85 70 03 00 00 8b 92 5c 0a 00 00 85 d2 0f 85 cc 00 00 00
RSP: 0018:ffffc90001ceef68 EFLAGS: 00000002
RAX: 0000000000000007 RBX: 1ffff9200039ddef RCX: 0000000000000000
RDX: ffff888078ed9d00 RSI: 0000000000000002 RDI: ffff888078eda75c
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8d912e57
R10: fffffbfff1b225ca R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888140778068 R15: 0000000000000000
FS: 00007f87607e5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f876121573f CR3: 0000000019edc000 CR4: 0000000000350ee0
Call Trace:
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x32/0x50 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:374 [inline]
lru_note_cost+0x3d/0x520 mm/swap.c:278
shrink_inactive_list mm/vmscan.c:2407 [inline]
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0xdec/0x2660 mm/vmscan.c:2940
shrink_node_memcgs mm/vmscan.c:3129 [inline]
shrink_node+0x858/0x1eb0 mm/vmscan.c:3252
shrink_zones mm/vmscan.c:3485 [inline]
do_try_to_free_pages+0x4e2/0x1640 mm/vmscan.c:3541
try_to_free_pages+0x29f/0x750 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.constprop.0+0xac7/0x20d0 mm/page_alloc.c:5007
__alloc_pages+0x412/0x500 mm/page_alloc.c:5382
alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
folio_alloc+0x1c/0x70 mm/mempolicy.c:2201
filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:1036
__page_cache_alloc include/linux/pagemap.h:374 [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:2996 [inline]
filemap_fault+0x1562/0x26d0 mm/filemap.c:3089
__do_fault+0x10d/0x4d0 mm/memory.c:3849
do_read_fault mm/memory.c:4164 [inline]
do_fault mm/memory.c:4293 [inline]
handle_pte_fault mm/memory.c:4551 [inline]
__handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686
handle_mm_fault+0x1c8/0x790 mm/memory.c:4784
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: 0033:0x7f876121573f
Code: Unable to access opcode bytes at RIP 0x7f8761215715.
RSP: 002b:00007f87607c4590 EFLAGS: 00010207
RAX: 000000000000009a RBX: 0000000000000000 RCX: 00007f8762e2822d
RDX: 000000000000009a RSI: 00007f87607c4da0 RDI: 0000000000000000
RBP: 0000556dab82a9d0 R08: 0000000000000000 R09: 0000000004000001
R10: 0000000000000001 R11: 0000000000000000 R12: 00007f87607c4da0
R13: 0000000000001fa0 R14: 0000000000001f9f R15: 00007f87607c4de8
----------------
Code disassembly (best guess):
0: 00 48 8d add %cl,-0x73(%rax)
3: ba 5c 0a 00 00 mov $0xa5c,%edx
8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
f: fc ff df
12: 48 89 f9 mov %rdi,%rcx
15: 48 c1 e9 03 shr $0x3,%rcx
19: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx
1d: 48 89 f8 mov %rdi,%rax
20: 83 e0 07 and $0x7,%eax
23: 83 c0 03 add $0x3,%eax
26: 38 c8 cmp %cl,%al
28: 7c 08 jl 0x32
* 2a: 84 c9 test %cl,%cl <-- trapping instruction
2c: 0f 85 70 03 00 00 jne 0x3a2
32: 8b 92 5c 0a 00 00 mov 0xa5c(%rdx),%edx
38: 85 d2 test %edx,%edx
3a: 0f 85 cc 00 00 00 jne 0x10c