INFO: task syz.1.162:7092 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc1-syzkaller-00224-g8d561baae505 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.162       state:D stack:14392 pid:7092  tgid:7089  ppid:5829   task_flags:0x400140 flags:0x00004006
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: 0033:0x7efd37b3ebe9
RSP: 002b:00007efd35da6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007efd37d65fa0 RCX: 00007efd37b3ebe9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007efd37bc1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd37d66038 R14: 00007efd37d65fa0 R15: 00007fff31361178
 </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-00224-g8d561baae505 #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: 5205 Comm: udevd Tainted: G        W           6.17.0-rc1-syzkaller-00224-g8d561baae505 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0xa0 kernel/kcov.c:313
Code: 00 00 48 89 7c 0a 10 48 89 74 0a 18 48 89 44 0a 20 e9 04 60 3b 09 cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 b0 f5 91 65 44 8b 05 27
RSP: 0018:ffffc90003a27398 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff110076dfb59 RCX: ffff888036afbb80
RDX: ffff88803b6fdac8 RSI: 000000000000063d RDI: 0000000000000000
RBP: ffffc90003a274b0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90003a27520 R11: fffff52000744ea7 R12: 1ffff110076dfb59
R13: 0000000000000083 R14: 1ffff110076dfb4e R15: 00000000000006c0
FS:  00007f6a0b8c9880(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5de264b000 CR3: 00000000370b2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 audit_log_vformat+0x1f1/0x9f0 kernel/audit.c:1972
 audit_log_format+0xda/0x130 kernel/audit.c:2012
 dump_common_audit_data security/lsm_audit.c:419 [inline]
 common_lsm_audit+0x146/0x2e0 security/lsm_audit.c:451
 smack_log+0x394/0x3f0 security/smack/smack_access.c:391
 smk_tskacc+0x2fc/0x370 security/smack/smack_access.c:255
 smack_inode_permission+0x28f/0x320 security/smack/smack_lsm.c:1217
 security_inode_permission+0xf8/0x310 security/security.c:2324
 may_lookup fs/namei.c:1836 [inline]
 link_path_walk+0x232/0xea0 fs/namei.c:2445
 path_lookupat+0x97/0x430 fs/namei.c:2653
 filename_lookup+0x212/0x570 fs/namei.c:2683
 vfs_statx+0xf8/0x550 fs/stat.c:353
 vfs_fstatat+0x118/0x170 fs/stat.c:375
 __do_sys_newfstatat fs/stat.c:542 [inline]
 __se_sys_newfstatat fs/stat.c:536 [inline]
 __x64_sys_newfstatat+0x116/0x190 fs/stat.c:536
 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: 0033:0x7f6a0ba21b0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffde88ad508 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffde88ad9a0 RCX: 00007f6a0ba21b0a
RDX: 00007ffde88ad510 RSI: 00007ffde88ad9a0 RDI: 00000000ffffff9c
RBP: 00005578f2060910 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffde88ad5a0
R13: 00005578d8128100 R14: 0000000000000000 R15: 00007ffde88ae0b0
 </TASK>