INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.15.0-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:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
io_schedule+0xee/0x170 kernel/sched/core.c:8368
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1363
lock_page include/linux/pagemap.h:697 [inline]
__unmap_and_move mm/migrate.c:986 [inline]
unmap_and_move mm/migrate.c:1210 [inline]
migrate_pages+0xa5a/0x3810 mm/migrate.c:1487
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: ffffffff8b980ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6461
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
3 locks held by kworker/1:3/2954:
1 lock held by cron/6151:
1 lock held by in:imklog/6174:
4 locks held by rs:main Q:Reg/6175:
2 locks held by agetty/6412:
#0: ffff88801dc05098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002aa02e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-fuzzer/6476:
1 lock held by syz-fuzzer/6477:
1 lock held by syz-executor.1/17971:
#0: ffff88801725fc08 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88801725fc08 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
3 locks held by kworker/0:2/18002:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2940 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_stack_info+0x0/0x90 arch/x86/kernel/dumpstack_64.c:193
Code: ff 05 77 0f 53 89 fb 77 0b 48 8b 04 dd 00 d2 85 89 5b c3 c3 48 89 de 48 c7 c7 c0 93 79 8b e8 67 d2 c8 02 eb e4 0f 1f 44 00 00 <41> 55 49 89 d5 41 54 55 48 89 cd 53 65 48 8b 1c 25 40 70 02 00 48
RSP: 0018:ffffc90001b27578 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffc90001b27658 RCX: ffffc90001b275f0
RDX: ffffc90001b275d0 RSI: ffff888018e04040 RDI: ffffc90001b27580
RBP: ffff888018e04040 R08: 0000000000000001 R09: ffffc90001b275d0
R10: fffff52000364ec5 R11: 0000000000000000 R12: ffffc90001b275f0
R13: ffffc90001b275f8 R14: ffffc90001b27608 R15: ffffc90001b275d0
FS: 00007f3f0bd8a8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f093b2000 CR3: 00000000792ad000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__unwind_start+0x4ae/0x800 arch/x86/kernel/unwind_orc.c:681
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
save_stack+0x151/0x1e0 mm/page_owner.c:119
__set_page_owner+0x50/0x290 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2418 [inline]
get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149
__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
cache_alloc_refill+0x27f/0x380 mm/slab.c:2965
____cache_alloc mm/slab.c:3048 [inline]
____cache_alloc mm/slab.c:3031 [inline]
__do_cache_alloc mm/slab.c:3275 [inline]
slab_alloc mm/slab.c:3316 [inline]
kmem_cache_alloc+0x450/0x560 mm/slab.c:3507
getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
getname_flags+0x9a/0xe0 include/linux/audit.h:323
user_path_at_empty+0x2b/0x60 fs/namei.c:2800
user_path_at include/linux/namei.h:57 [inline]
do_faccessat+0x127/0x850 fs/open.c:421
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: 0033:0x7f3f0b0459c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe6e6b4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffe6e6b8010 RCX: 00007f3f0b0459c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005619e88f19a3
RBP: 00007ffe6e6b5130 R08: 00005619e88e73e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00005619ea2218c0 R15: 00007ffe6e6b5620
----------------
Code disassembly (best guess):
0: ff 05 77 0f 53 89 incl -0x76acf089(%rip) # 0x89530f7d
6: fb sti
7: 77 0b ja 0x14
9: 48 8b 04 dd 00 d2 85 mov -0x767a2e00(,%rbx,8),%rax
10: 89
11: 5b pop %rbx
12: c3 retq
13: c3 retq
14: 48 89 de mov %rbx,%rsi
17: 48 c7 c7 c0 93 79 8b mov $0xffffffff8b7993c0,%rdi
1e: e8 67 d2 c8 02 callq 0x2c8d28a
23: eb e4 jmp 0x9
25: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
* 2a: 41 55 push %r13 <-- trapping instruction
2c: 49 89 d5 mov %rdx,%r13
2f: 41 54 push %r12
31: 55 push %rbp
32: 48 89 cd mov %rcx,%rbp
35: 53 push %rbx
36: 65 48 8b 1c 25 40 70 mov %gs:0x27040,%rbx
3d: 02 00
3f: 48 rex.W