INFO: task syz.2.1196:9571 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1196      state:D stack:24152 pid:9571  tgid:9570  ppid:5592   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x16dc/0x5500 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 io_schedule+0x80/0xe0 kernel/sched/core.c:8150
 folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1324
 folio_lock include/linux/pagemap.h:1159 [inline]
 migrate_folio_unmap mm/migrate.c:1250 [inline]
 migrate_pages_batch+0x1bb1/0x4340 mm/migrate.c:1907
 migrate_pages_sync mm/migrate.c:2051 [inline]
 migrate_pages+0x1f90/0x2900 mm/migrate.c:2133
 compact_zone+0x3144/0x4a70 mm/compaction.c:2669
 compact_node mm/compaction.c:2938 [inline]
 compact_nodes mm/compaction.c:2960 [inline]
 sysctl_compaction_handler+0x3f3/0x880 mm/compaction.c:3011
 proc_sys_call_handler+0x4c7/0x830 fs/proc/proc_sysctl.c:600
 iter_file_splice_write+0xa36/0x1240 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x586/0xcc0 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x540/0x7e0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1426 [inline]
 __se_sys_sendfile64+0xdf/0x1a0 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd37c72ce59
RSP: 002b:00007fd37a97e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd37c9a5fa0 RCX: 00007fd37c72ce59
RDX: 00002000000000c0 RSI: 0000000000000005 RDI: 0000000000000007
RBP: 00007fd37c7c2e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd37c9a6038 R14: 00007fd37c9a5fa0 R15: 00007ffc84e9ced8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11372 Comm: syz.1.1744 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3f/0x80 kernel/kcov.c:217
Code: a8 10 81 e6 00 00 ff 00 ba 00 01 00 00 23 91 f4 0b 00 00 89 d7 09 f7 74 11 85 f6 75 39 85 d2 74 35 83 b9 04 17 00 00 00 74 2c <8b> 91 e0 16 00 00 83 fa 02 75 21 48 8b 91 e8 16 00 00 48 8b 32 48
RSP: 0000:ffffc90009fd7670 EFLAGS: 00000246
RAX: ffffffff88f4144a RBX: ffff8880267b9640 RCX: ffff88805c575d00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f1375f R12: ffff888036ea3828
R13: ffff88805ec45b40 R14: ffffc90009fd77e0 R15: 0000000000000000
FS:  00007f90ff9856c0(0000) GS:ffff888126144000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000003aa000 CR3: 0000000038c14000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __skb_try_recv_from_queue+0x30a/0x730 net/core/datagram.c:185
 __skb_try_recv_datagram+0x9e/0x1b0 net/core/datagram.c:265
 __unix_dgram_recvmsg+0x2e4/0xd70 net/unix/af_unix.c:2582
 sock_recvmsg_nosec+0x130/0x170 net/socket.c:1126
 ____sys_recvmsg+0x3ef/0x4b0 net/socket.c:2902
 ___sys_recvmsg+0x213/0x5a0 net/socket.c:2946
 do_recvmmsg+0x320/0x7f0 net/socket.c:3041
 __sys_recvmmsg net/socket.c:3115 [inline]
 __do_sys_recvmmsg net/socket.c:3138 [inline]
 __se_sys_recvmmsg net/socket.c:3131 [inline]
 __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3131
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f910174ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90ff985028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f91019c6090 RCX: 00007f910174ce59
RDX: 00000000080002c1 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f91017e2e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f91019c6128 R14: 00007f91019c6090 R15: 00007ffe137f1a58
 </TASK>