INFO: task syz.3.101:6933 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.101       state:D stack:25672 pid:6933  tgid:6924  ppid:5824   task_flags:0x440140 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
 __rwbase_read_lock+0xbc/0x180 kernel/locking/rwbase_rt.c:114
 rwbase_read_lock kernel/locking/rwbase_rt.c:147 [inline]
 __down_read kernel/locking/rwsem.c:1466 [inline]
 down_read+0x127/0x1f0 kernel/locking/rwsem.c:1539
 filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
 page_cache_ra_unbounded+0xf4/0x740 mm/readahead.c:228
 filemap_get_pages+0x443/0x1df0 mm/filemap.c:2603
 filemap_splice_read+0x587/0xc60 mm/filemap.c:2991
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4b1/0xcd0 fs/splice.c:1083
 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: 0033:0x7f4bc14bebe9
RSP: 002b:00007f4bbf71e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f4bc16e5fa0 RCX: 00007f4bc14bebe9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f4bc1541e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4bc16e6038 R14: 00007f4bc16e5fa0 R15: 00007ffc0a76fe68
 </TASK>
INFO: task syz.4.106:7048 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.106       state:D stack:23016 pid:7048  tgid:7025  ppid:5830   task_flags:0x440040 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
 __rwbase_read_lock+0xbc/0x180 kernel/locking/rwbase_rt.c:114
 rwbase_read_lock kernel/locking/rwbase_rt.c:147 [inline]
 __down_read kernel/locking/rwsem.c:1466 [inline]
 down_read+0x127/0x1f0 kernel/locking/rwsem.c:1539
 filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
 page_cache_ra_unbounded+0xf4/0x740 mm/readahead.c:228
 filemap_get_pages+0x443/0x1df0 mm/filemap.c:2603
 filemap_splice_read+0x587/0xc60 mm/filemap.c:2991
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4b1/0xcd0 fs/splice.c:1083
 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: 0033:0x7f64dd76ebe9
RSP: 002b:00007f64db9b5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f64dd996090 RCX: 00007f64dd76ebe9
RDX: 0000000000000000 RSI: 000000000000000b RDI: 000000000000000a
RBP: 00007f64dd7f1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f64dd996128 R14: 00007f64dd996090 R15: 00007ffe867dedb8
 </TASK>
INFO: task syz.0.120:7080 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.120       state:D stack:22824 pid:7080  tgid:7079  ppid:5831   task_flags:0x440140 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
 __rwbase_read_lock+0xbc/0x180 kernel/locking/rwbase_rt.c:114
 rwbase_read_lock kernel/locking/rwbase_rt.c:147 [inline]
 __down_read kernel/locking/rwsem.c:1466 [inline]
 down_read+0x127/0x1f0 kernel/locking/rwsem.c:1539
 filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
 page_cache_ra_unbounded+0xf4/0x740 mm/readahead.c:228
 filemap_get_pages+0x443/0x1df0 mm/filemap.c:2603
 filemap_splice_read+0x587/0xc60 mm/filemap.c:2991
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4b1/0xcd0 fs/splice.c:1083
 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: 0033:0x7f912372ebe9
RSP: 002b:00007f912198e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9123955fa0 RCX: 00007f912372ebe9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007f91237b1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9123956038 R14: 00007f9123955fa0 R15: 00007ffc78251b68
 </TASK>
INFO: task syz.6.121:7082 blocked for more than 143 seconds.
      Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.121       state:D stack:21896 pid:7082  tgid:7081  ppid:6799   task_flags:0x440140 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
 __rwbase_read_lock+0xbc/0x180 kernel/locking/rwbase_rt.c:114
 rwbase_read_lock kernel/locking/rwbase_rt.c:147 [inline]
 __down_read kernel/locking/rwsem.c:1466 [inline]
 down_read+0x127/0x1f0 kernel/locking/rwsem.c:1539
 filemap_invalidate_lock_shared include/linux/fs.h:934 [inline]
 page_cache_ra_unbounded+0xf4/0x740 mm/readahead.c:228
 filemap_get_pages+0x443/0x1df0 mm/filemap.c:2603
 filemap_splice_read+0x587/0xc60 mm/filemap.c:2991
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4b1/0xcd0 fs/splice.c:1083
 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: 0033:0x7fa8b38cebe9
RSP: 002b:00007fa8b1b2e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa8b3af5fa0 RCX: 00007fa8b38cebe9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fa8b3951e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe80 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8b3af6038 R14: 00007fa8b3af5fa0 R15: 00007ffea345aaf8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 39 Comm: khungtaskd Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8640 Comm: syz.1.258 Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:in_irqentry_text kernel/stacktrace.c:381 [inline]
RIP: 0010:filter_irq_stacks+0x5c/0xa0 kernel/stacktrace.c:397
Code: 74 08 4c 89 ff e8 14 a3 72 00 49 8b 04 de 48 3d 30 02 00 81 0f 93 c1 48 3d 70 16 00 81 0f 92 c2 84 d1 75 27 48 3d 70 c3 f9 8a <0f> 92 c1 48 3d 89 c3 f9 8a 0f 93 c0 08 c8 74 11 48 ff c3 49 83 c7
RSP: 0018:ffffc900042e72e8 EFLAGS: 00000283
RAX: ffffffff8af5c9ba RBX: 000000000000000b RCX: 0000000000000001
RDX: 0000000000140c00 RSI: 000000000000000d RDI: ffffc900042e73c0
RBP: ffffc900042e74b0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900042e7298 R11: ffffffff81aadf70 R12: 000000000000000d
R13: dffffc0000000000 R14: ffffc900042e73c0 R15: ffffc900042e7418
FS:  00007f248b6a66c0(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7e81c87dac CR3: 0000000077b76000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 stack_depot_save_flags+0x40/0x860 lib/stackdepot.c:659
 save_stack+0x105/0x1f0 mm/page_owner.c:157
 __set_page_owner+0x8d/0x490 mm/page_owner.c:329
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
 prep_new_page mm/page_alloc.c:1859 [inline]
 get_page_from_freelist+0x2119/0x21b0 mm/page_alloc.c:3858
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
 alloc_pages_mpol+0xd1/0x380 mm/mempolicy.c:2416
 folio_alloc_mpol_noprof+0x39/0xe0 mm/mempolicy.c:2435
 shmem_alloc_folio mm/shmem.c:1908 [inline]
 shmem_alloc_and_add_folio mm/shmem.c:1947 [inline]
 shmem_get_folio_gfp+0x633/0x1a70 mm/shmem.c:2597
 shmem_get_folio mm/shmem.c:2703 [inline]
 shmem_write_begin+0xef/0x2a0 mm/shmem.c:3353
 generic_perform_write+0x29a/0x8c0 mm/filemap.c:4175
 shmem_file_write_iter+0xfb/0x120 mm/shmem.c:3528
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5d2/0xb40 fs/read_write.c:686
 ksys_write+0x14b/0x260 fs/read_write.c:738
 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: 0033:0x7f248d43d69f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f248b6a5df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f248d43d69f
RDX: 0000000001000000 RSI: 00007f2483286000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000004424
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000004
R13: 00007f248b6a5ef0 R14: 00007f248b6a5eb0 R15: 00007f2483286000
 </TASK>