INFO: task syz.1.1466:4425 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1466      state:D stack:0     pid:4425  tgid:4424  ppid:290    flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 super_lock+0x150/0x300 fs/super.c:115
 super_lock_shared fs/super.c:140 [inline]
 iterate_supers+0x8a/0x560 fs/super.c:934
 quota_sync_all fs/quota/quota.c:69 [inline]
 __do_sys_quotactl fs/quota/quota.c:938 [inline]
 __se_sys_quotactl+0x308/0x7d0 fs/quota/quota.c:917
 __x64_sys_quotactl+0x9f/0xc0 fs/quota/quota.c:917
 x64_sys_call+0x2818/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:180
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fcb2678ebe9
RSP: 002b:00007fcb27699038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fcb269b5fa0 RCX: 00007fcb2678ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000102
RBP: 00007fcb26811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcb269b6038 R14: 00007fcb269b5fa0 R15: 00007fff87926728
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 6e51b6b85230f66418c68cf4df55f7a3259ed786
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2c7/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8955 Comm: syz.0.3142 Not tainted syzkaller #0 6e51b6b85230f66418c68cf4df55f7a3259ed786
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 70 05 48 89 de e8 b0 20 52 00 5b 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc b8 e3 1d d6 e8 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 48 8b 45 08 65 48 8b 0c 25 00 eb 04 00 65
RSP: 0018:ffffc90001ff6720 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000001
RDX: ffffffff85881e44 RSI: ffffffff87c20520 RDI: 0000000000000000
RBP: ffffc90001ff6798 R08: ffff888141e25f00 R09: 0000000000000002
R10: 0000000000000025 R11: 0000000000000002 R12: ffffffff85c91eec
R13: ffff0a1000000609 R14: ffffffff85c91eec R15: dffffc0000000000
FS:  00007f7fbd1886c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001080 CR3: 00000001191b6000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 vsnprintf+0xe6/0x1aa0 lib/vsprintf.c:2755
 sprintf+0xda/0x120 lib/vsprintf.c:3007
 print_time kernel/printk/printk.c:1387 [inline]
 info_print_prefix+0x183/0x480 kernel/printk/printk.c:1416
 record_print_text+0x155/0x430 kernel/printk/printk.c:1465
 printk_get_next_message+0x273/0x930 kernel/printk/printk.c:3037
 console_emit_next_record kernel/printk/printk.c:3105 [inline]
 console_flush_all+0x3a4/0xaa0 kernel/printk/printk.c:3239
 __console_flush_and_unlock kernel/printk/printk.c:3298 [inline]
 console_unlock+0xe9/0x270 kernel/printk/printk.c:3338
 vprintk_emit+0x27c/0x640 kernel/printk/printk.c:2462
 vprintk_default+0x2a/0x40 kernel/printk/printk.c:2477
 vprintk+0x93/0xa0 kernel/printk/printk_safe.c:73
 _printk+0xd0/0x120 kernel/printk/printk.c:2487
 __nla_validate_parse+0x256a/0x2d50 lib/nlattr.c:647
 __nla_parse+0x46/0x60 lib/nlattr.c:732
 __nlmsg_parse include/net/netlink.h:761 [inline]
 nlmsg_parse_deprecated include/net/netlink.h:802 [inline]
 xfrm_user_rcv_msg+0x46a/0x860 net/xfrm/xfrm_user.c:3398
 netlink_rcv_skb+0x22b/0x4a0 net/netlink/af_netlink.c:2537
 xfrm_netlink_rcv+0x76/0x90 net/xfrm/xfrm_user.c:3437
 netlink_unicast_kernel net/netlink/af_netlink.c:1316 [inline]
 netlink_unicast+0x8c9/0xa60 net/netlink/af_netlink.c:1342
 netlink_sendmsg+0x7f0/0xaf0 net/netlink/af_netlink.c:1886
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0xa18/0xa70 net/socket.c:2610
 ___sys_sendmsg+0x220/0x2a0 net/socket.c:2664
 __sys_sendmsg net/socket.c:2693 [inline]
 __do_sys_sendmsg net/socket.c:2702 [inline]
 __se_sys_sendmsg net/socket.c:2700 [inline]
 __x64_sys_sendmsg+0x1eb/0x2c0 net/socket.c:2700
 x64_sys_call+0x2a4c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7fbc38ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7fbd188038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7fbc5b5fa0 RCX: 00007f7fbc38ebe9
RDX: 000000000004c050 RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007f7fbc411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7fbc5b6038 R14: 00007f7fbc5b5fa0 R15: 00007ffdcea1bd48
 </TASK>
xpad 1-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19