INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:27392 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:780 [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: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kswapd1/98:
2 locks held by systemd-udevd/2969:
1 lock held by in:imklog/6229:
#0: ffff888072b86af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by syz-fuzzer/2562:
1 lock held by syz-executor.0/29785:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc2-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: 2961 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:save_fpregs_to_fpstate+0x2/0x270 arch/x86/kernel/fpu/core.c:116
Code: 05 93 00 eb a4 e8 fe 04 93 00 e9 9a fe ff ff e8 f4 04 93 00 e9 66 fe ff ff 45 31 e4 eb 95 e8 e5 04 93 00 e9 e5 fe ff ff 41 57 <41> 56 41 55 41 54 55 53 48 89 fb e8 2e 4b 4c 00 0f 1f 44 00 00 e8
RSP: 0018:ffffc90001cdf3e8 EFLAGS: 00000046
RAX: 0000000000000007 RBX: ffff88807b6c5700 RCX: ffffffff8128d859
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807b6c6f40
RBP: ffff888017e59d00 R08: 0000000000000000 R09: ffff88807b6c5707
R10: ffffed100f6d8ae0 R11: 0000000000000000 R12: ffff88807b6c5700
R13: 0000000000000001 R14: ffff88807b6c6e80 R15: ffff88807b6c6f40
FS: 00007fdf3306e8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf2e68c000 CR3: 0000000023747000 CR4: 0000000000350ee0
Call Trace:
----------------
Code disassembly (best guess):
0: 05 93 00 eb a4 add $0xa4eb0093,%eax
5: e8 fe 04 93 00 callq 0x930508
a: e9 9a fe ff ff jmpq 0xfffffea9
f: e8 f4 04 93 00 callq 0x930508
14: e9 66 fe ff ff jmpq 0xfffffe7f
19: 45 31 e4 xor %r12d,%r12d
1c: eb 95 jmp 0xffffffb3
1e: e8 e5 04 93 00 callq 0x930508
23: e9 e5 fe ff ff jmpq 0xffffff0d
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 55 push %r13
2e: 41 54 push %r12
30: 55 push %rbp
31: 53 push %rbx
32: 48 89 fb mov %rdi,%rbx
35: e8 2e 4b 4c 00 callq 0x4c4b68
3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3f: e8 .byte 0xe8