INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc4-next-20211208-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:27656 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4d90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
io_schedule+0xee/0x170 kernel/sched/core.c:8414
folio_wait_bit_common+0x4f2/0xa90 mm/filemap.c:1346
lock_page include/linux/pagemap.h:796 [inline]
__unmap_and_move mm/migrate.c:970 [inline]
unmap_and_move mm/migrate.c:1120 [inline]
migrate_pages+0x8f1/0x52e0 mm/migrate.c:1403
compact_zone+0x1ada/0x3880 mm/compaction.c:2400
kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2840
kcompactd+0x86b/0xf30 mm/compaction.c:2942
kthread+0x405/0x4f0 kernel/kthread.c:345
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz-executor.2:17578 can't die for more than 144 seconds.
task:syz-executor.2 state:R running task stack:24712 pid:17578 ppid: 6524 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4d90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
reclaim_throttle+0x1ce/0x5e0 mm/vmscan.c:1072
consider_reclaim_throttle mm/vmscan.c:3399 [inline]
shrink_zones mm/vmscan.c:3486 [inline]
do_try_to_free_pages+0x7cd/0x1620 mm/vmscan.c:3541
try_to_free_pages+0x29f/0x750 mm/vmscan.c:3776
__perform_reclaim mm/page_alloc.c:4603 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:4624 [inline]
__alloc_pages_slowpath.constprop.0+0xa9e/0x2080 mm/page_alloc.c:5014
__alloc_pages+0x412/0x500 mm/page_alloc.c:5389
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2271
folio_alloc+0x1c/0x70 mm/mempolicy.c:2281
filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:1011
__page_cache_alloc include/linux/pagemap.h:374 [inline]
page_cache_ra_unbounded+0x365/0x780 mm/readahead.c:215
do_page_cache_ra+0xf9/0x140 mm/readahead.c:268
do_sync_mmap_readahead mm/filemap.c:3058 [inline]
filemap_fault+0x157f/0x21c0 mm/filemap.c:3151
__do_fault+0x10d/0x790 mm/memory.c:3846
do_read_fault mm/memory.c:4161 [inline]
do_fault mm/memory.c:4290 [inline]
handle_pte_fault mm/memory.c:4548 [inline]
__handle_mm_fault+0x2761/0x4160 mm/memory.c:4683
handle_mm_fault+0x1c8/0x790 mm/memory.c:4781
faultin_page mm/gup.c:939 [inline]
__get_user_pages+0x503/0xf80 mm/gup.c:1160
populate_vma_page_range+0x24d/0x330 mm/gup.c:1492
__mm_populate+0x1ea/0x3e0 mm/gup.c:1601
mm_populate include/linux/mm.h:2698 [inline]
vm_mmap_pgoff+0x20e/0x290 mm/util.c:524
ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1630
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f73d4da6af9
RSP: 002b:00007f73d3d1c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f73d4eb9f60 RCX: 00007f73d4da6af9
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f73d4e00ff7 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe5d074b2f R14: 00007f73d3d1c300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/1:1/25:
1 lock held by khungtaskd/27:
#0: ffffffff8bb828a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by kswapd0/98:
1 lock held by kswapd1/99:
1 lock held by systemd-journal/2961:
1 lock held by systemd-timesyn/3058:
#0: ffff888022858590 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:832 [inline]
#0: ffff888022858590 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1ae/0x780 mm/readahead.c:194
1 lock held by cron/6213:
1 lock held by in:imklog/6223:
#0: ffff888074fd05f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994
4 locks held by rs:main Q:Reg/6224:
#0: ffff8880707819f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994
#1: ffff88807e89c460 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x12d/0x250 fs/read_write.c:643
#2: ffff8880701cbfc0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff8880701cbfc0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: ext4_buffered_write_iter+0xb6/0x3b0 fs/ext4/file.c:263
#3: ffffffff8bcaaaa0 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4600 [inline]
#3: ffffffff8bcaaaa0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4624 [inline]
#3: ffffffff8bcaaaa0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0x9f5/0x2080 mm/page_alloc.c:5014
1 lock held by syz-fuzzer/6494:
3 locks held by kworker/u4:16/10160:
3 locks held by kworker/0:1/2252:
1 lock held by syz-executor.2/17578:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc4-next-20211208-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:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x405/0x4f0 kernel/kthread.c:345
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: 8 Comm: kworker/u4:0 Not tainted 5.16.0-rc4-next-20211208-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy4 ieee80211_iface_work
RIP: 0010:unwind_next_frame+0x3e0/0x1ce0 arch/x86/kernel/unwind_orc.c:456
Code: 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 0f b6 04 02 4c 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bd 08 00 00 41 0f b6 40 04 0f 0f 85 aa 00 00 00 49 8d 78 05 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000cd6e88 EFLAGS: 00000246
RAX: 0000000000000015 RBX: 1ffff9200019add9 RCX: ffffffff81cb21d4
RDX: 0000000000000004 RSI: ffffffff8e1a31b2 RDI: ffffffff8da75114
RBP: 0000000000000001 R08: ffffffff8e1a3218 R09: 0000000000000001
R10: fffff5200019adf7 R11: 000000000008808a R12: ffffc90000cd6fa8
R13: ffffc90000cd6f95 R14: ffffc90000cd6f60 R15: ffffffff8e1a321c
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d78018218 CR3: 0000000021b5c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
save_stack+0x151/0x1e0 mm/page_owner.c:121
__set_page_owner+0x45/0x2d0 mm/page_owner.c:183
prep_new_page mm/page_alloc.c:2433 [inline]
get_page_from_freelist+0xa72/0x2f40 mm/page_alloc.c:4164
__alloc_pages_slowpath.constprop.0+0x2c2/0x2080 mm/page_alloc.c:4921
__alloc_pages+0x412/0x500 mm/page_alloc.c:5389
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2271
alloc_slab_page mm/slub.c:1799 [inline]
allocate_slab mm/slub.c:1944 [inline]
new_slab+0x28d/0x3a0 mm/slub.c:2004
___slab_alloc+0x6be/0xd60 mm/slub.c:3019
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3106
slab_alloc_node mm/slub.c:3197 [inline]
slab_alloc mm/slub.c:3239 [inline]
kmem_cache_alloc_trace+0x289/0x2c0 mm/slub.c:3256
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:715 [inline]
ieee802_11_parse_elems_crc+0xd5/0x1050 net/mac80211/util.c:1471
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2208 [inline]
ieee80211_bss_info_update+0x42c/0xb30 net/mac80211/scan.c:212
ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0x19cf/0x3130 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
ieee80211_iface_work+0xa65/0xd00 net/mac80211/iface.c:1581
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2318
worker_thread+0x658/0x11f0 kernel/workqueue.c:2465
kthread+0x405/0x4f0 kernel/kthread.c:345
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 7 bytes skipped:
0: df 4c 89 fa fisttps -0x6(%rcx,%rcx,4)
4: 48 c1 ea 03 shr $0x3,%rdx
8: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
c: 4c 89 fa mov %r15,%rdx
f: 83 e2 07 and $0x7,%edx
12: 38 d0 cmp %dl,%al
14: 7f 08 jg 0x1e
16: 84 c0 test %al,%al
18: 0f 85 bd 08 00 00 jne 0x8db
1e: 41 0f b6 40 04 movzbl 0x4(%r8),%eax
* 23: a8 0f test $0xf,%al <-- trapping instruction
25: 0f 85 aa 00 00 00 jne 0xd5
2b: 49 8d 78 05 lea 0x5(%r8),%rdi
2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
36: fc ff df