INFO: task syz.9.274:8154 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc1-syzkaller-00199-gdfd4b508c8c6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.274       state:D stack:25160 pid:8154  tgid:8111  ppid:6819   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 rt_mutex_schedule+0x77/0xf0 kernel/sched/core.c:7339
 rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
 __rt_mutex_slowlock_locked+0x1e04/0x25e0 kernel/locking/rtmutex.c:1760
 rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
 rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
 inode_lock include/linux/fs.h:869 [inline]
 bch2_direct_write+0x19b/0x2cf0 fs/bcachefs/fs-io-direct.c:613
 bch2_write_iter+0x192/0x2ba0 fs/bcachefs/fs-io-buffered.c:1064
 iter_file_splice_write+0x9cb/0x10b0 fs/splice.c:738
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1158
 splice_direct_to_actor+0x5b3/0xcd0 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x187/0x270 fs/splice.c:1227
 do_sendfile+0x4ec/0x7f0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c826bebe9
RSP: 002b:00007f1c808e4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1c828e6180 RCX: 00007f1c826bebe9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f1c82741e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c828e6218 R14: 00007f1c828e6180 R15: 00007ffc740e7a98
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Tainted: G        W           6.17.0-rc1-syzkaller-00199-gdfd4b508c8c6 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
 watchdog+0xf93/0xfe0 kernel/hung_task.c:491
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 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: 8412 Comm: udevd Tainted: G        W           6.17.0-rc1-syzkaller-00199-gdfd4b508c8c6 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0033:0x7f8b7048fbbd
Code: 07 fe ff ff 66 0f 1f 84 00 00 00 00 00 83 fa 01 76 7b 89 f8 09 f0 25 ff 0f 00 00 3d e0 0f 00 00 7f 2b c5 fe 6f 16 c5 ed 74 17 <c5> fd d7 c2 ff c0 c4 e2 68 f5 d0 0f 85 c2 fd ff ff 31 c0 e9 c9 fd
RSP: 002b:00007fff9698bd18 EFLAGS: 00000283
RAX: 0000000000000118 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 000000000000000b RSI: 00007f8b6f988000 RDI: 00007f8b70afe118
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 00005615cf7c8730 R11: 00005615cf7bddc0 R12: 00005615cf7c86d0
R13: 00007fff9698bd40 R14: 00007f8b70b11080 R15: 00007f8b70b110d8
FS:  00007f8b702d2880 GS:  0000000000000000