INFO: task kcompactd0:29 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:27888 pid: 29 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/26:
#0: ffffffff8bb80fe0 (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:
2 locks held by kworker/u4:4/993:
#0: ffff8880b9c39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
1 lock held by systemd-journal/2963:
1 lock held by systemd-udevd/2971:
1 lock held by in:imklog/6301:
1 lock held by cron/6305:
1 lock held by syz-fuzzer/6558:
#0: ffff88806c6bf590 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88806c6bf590 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
1 lock held by syz-fuzzer/6583:
3 locks held by kworker/1:1/29765:
2 locks held by kworker/u4:8/30083:
#0: ffff8880b9d39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9d279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
3 locks held by kworker/0:17/30504:
1 lock held by syz-executor.2/2250:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 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: 6301 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:spin_unlock_irq include/linux/spinlock.h:399 [inline]
RIP: 0010:shrink_inactive_list mm/vmscan.c:2405 [inline]
RIP: 0010:shrink_list mm/vmscan.c:2621 [inline]
RIP: 0010:shrink_lruvec+0xdd2/0x2660 mm/vmscan.c:2940
Code: 8b 44 24 10 8d 70 22 48 83 fe 66 48 89 f3 0f 87 66 17 00 00 48 8b 7c 24 20 48 63 db 48 8b 44 24 30 65 48 01 04 dd 00 50 03 00 e9 eb a3 07 8b 94 24 5c 02 00 00 8b 74 24 10 48 8b 7c 24 08 e8
RSP: 0018:ffffc9000be8f0b8 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 0000000000000023 RCX: 0000000000000000
RDX: ffff88807bd560c0 RSI: 0000000000000023 RDI: ffff888140b9f050
RBP: 000000000000001a R08: ffff88807a1b8388 R09: ffffffff8b814407
R10: ffffffff81a318cf R11: 0000000000000000 R12: ffffc9000be8f1d0
R13: 0000000000000000 R14: ffffc9000be8f270 R15: 0000000000000020
FS: 00007ff3e2b7c700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b2fa172e3 CR3: 000000001f0f7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 000000000000b1c1 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
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: 0033:0x7ff3e51bf22d
Code: Unable to access opcode bytes at RIP 0x7ff3e51bf203.
RSP: 002b:00007ff3e2b5b580 EFLAGS: 00010293
RAX: 0000000000000090 RBX: 0000000000000000 RCX: 00007ff3e51bf22d
RDX: 0000000000001fa0 RSI: 00007ff3e2b5bda0 RDI: 0000000000000004
RBP: 000056145a6af9d0 R08: 0000000000000000 R09: 0000000004000001
R10: 0000000000000001 R11: 0000000000000293 R12: 00007ff3e2b5bda0
R13: 0000000000001fa0 R14: 0000000000001f9f R15: 00007ff3e2b5bde5
----------------
Code disassembly (best guess):
0: 8b 44 24 10 mov 0x10(%rsp),%eax
4: 8d 70 22 lea 0x22(%rax),%esi
7: 48 83 fe 66 cmp $0x66,%rsi
b: 48 89 f3 mov %rsi,%rbx
e: 0f 87 66 17 00 00 ja 0x177a
14: 48 8b 7c 24 20 mov 0x20(%rsp),%rdi
19: 48 63 db movslq %ebx,%rbx
1c: 48 8b 44 24 30 mov 0x30(%rsp),%rax
21: 65 48 01 04 dd 00 50 add %rax,%gs:0x35000(,%rbx,8)
28: 03 00
* 2a: e8 e9 eb a3 07 callq 0x7a3ec18 <-- trapping instruction
2f: 8b 94 24 5c 02 00 00 mov 0x25c(%rsp),%edx
36: 8b 74 24 10 mov 0x10(%rsp),%esi
3a: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi
3f: e8 .byte 0xe8