INFO: task syz.3.128:6887 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.128       state:D stack:24832 pid:6887  tgid:6887  ppid:5805   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0x1553/0x5240 kernel/sched/core.c:6911
 __schedule_loop kernel/sched/core.c:6993 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7289
 rt_mutex_slowlock_block+0x508/0x680 kernel/locking/rtmutex.c:1647
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
 __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1760 [inline]
 rt_mutex_slowlock+0x2dc/0x7b0 kernel/locking/rtmutex.c:1800
 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
 __mutex_lock_common kernel/locking/rtmutex_api.c:534 [inline]
 mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:552
 ima_check_last_writer security/integrity/ima/ima_main.c:192 [inline]
 ima_file_free+0x196/0x4e0 security/integrity/ima/ima_main.c:233
 security_file_release+0x85/0x110 security/security.c:2399
 __fput+0x3c2/0xa90 fs/file_table.c:463
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a56b4c819
RSP: 002b:00007ffc80350338 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f7a56dc7da0 RCX: 00007f7a56b4c819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7a56dc7da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007f7a56dc7cb0 R11: 0000000000000246 R12: 000000000002d089
R13: 00007f7a56dc618c R14: 000000000002d057 R15: 00007f7a56dc6180
 </TASK>
INFO: task syz.3.128:6888 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.128       state:D stack:24096 pid:6888  tgid:6887  ppid:5805   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0x1553/0x5240 kernel/sched/core.c:6911
 __schedule_loop kernel/sched/core.c:6993 [inline]
 rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7289
 rwbase_write_lock+0x3da/0x730 kernel/locking/rwbase_rt.c:272
 jfs_get_block+0x153/0xad0 fs/jfs/inode.c:219
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x1671/0x3330 fs/direct-io.c:1243
 blockdev_direct_IO include/linux/fs.h:3114 [inline]
 jfs_direct_IO+0x11b/0x220 fs/jfs/inode.c:339
 generic_file_direct_write+0x1dc/0x3e0 mm/filemap.c:4258
 __generic_file_write_iter+0x120/0x240 mm/filemap.c:4427
 generic_file_write_iter+0x14b/0x690 mm/filemap.c:4467
 iter_file_splice_write+0x9a6/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x545/0xc80 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x547/0x7e0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a56b4c819
RSP: 002b:00007f7a54d9e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f7a56dc5fa0 RCX: 00007f7a56b4c819
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f7a56be2c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7a56dc6038 R14: 00007f7a56dc5fa0 R15: 00007ffc803501d8
 </TASK>
INFO: task syz.3.128:6895 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.128       state:D stack:21784 pid:6895  tgid:6887  ppid:5805   task_flags:0x440140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5298 [inline]
 __schedule+0x1553/0x5240 kernel/sched/core.c:6911
 __schedule_loop kernel/sched/core.c:6993 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7008
 io_schedule+0x80/0xe0 kernel/sched/core.c:7835
 __lock_metapage fs/jfs/jfs_metapage.c:52 [inline]
 lock_metapage+0x1ff/0x400 fs/jfs/jfs_metapage.c:66
 __get_metapage+0x49a/0xde0 fs/jfs/jfs_metapage.c:748
 xt_getpage fs/jfs/jfs_xtree.c:116 [inline]
 xtSearch+0x154/0x1cf0 fs/jfs/jfs_xtree.c:270
 xtLookup+0x295/0x860 fs/jfs/jfs_xtree.c:168
 jfs_get_block+0x25b/0xad0 fs/jfs/inode.c:224
 do_mpage_readpage+0x801/0x1980 fs/mpage.c:222
 mpage_readahead+0x407/0x830 fs/mpage.c:371
 read_pages+0x193/0x5a0 mm/readahead.c:163
 page_cache_ra_unbounded+0x704/0x9b0 mm/readahead.c:304
 do_page_cache_ra mm/readahead.c:334 [inline]
 page_cache_ra_order+0x2b5/0x4b0 mm/readahead.c:538
 filemap_readahead mm/filemap.c:2663 [inline]
 filemap_get_pages+0x832/0x1ea0 mm/filemap.c:2709
 filemap_read+0x44a/0x1240 mm/filemap.c:2805
 __kernel_read+0x50d/0x9c0 fs/read_write.c:532
 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x12cf/0x1800 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x491/0x930 security/integrity/ima/ima_api.c:295
 process_measurement+0x12d9/0x1c90 security/integrity/ima/ima_main.c:407
 ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:667
 security_file_post_open+0xb3/0x260 security/security.c:2653
 do_open fs/namei.c:4679 [inline]
 path_openat+0x2e88/0x38a0 fs/namei.c:4836
 do_file_open+0x23e/0x4a0 fs/namei.c:4865
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a56b4c819
RSP: 002b:00007f7a54d7d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7a56dc6090 RCX: 00007f7a56b4c819
RDX: 0000000000000042 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f7a56be2c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7a56dc6128 R14: 00007f7a56dc6090 R15: 00007ffc803501d8
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:1/10:
2 locks held by kworker/1:1/36:
1 lock held by khungtaskd/38:
 #0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:847 [inline]
 #0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by kworker/u8:2/41:
 #0: ffff888019c44138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3263 [inline]
 #0: ffff888019c44138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0 kernel/workqueue.c:3371
 #1: ffffc90000b27c40 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3264 [inline]
 #1: ffffc90000b27c40 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0 kernel/workqueue.c:3371
2 locks held by kworker/u8:9/1111:
 #0: ffff888019c44138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3263 [inline]
 #0: ffff888019c44138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0 kernel/workqueue.c:3371
 #1: ffffc90005aefc40 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3264 [inline]
 #1: ffffc90005aefc40 ((reaper_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0 kernel/workqueue.c:3371
2 locks held by getty/5554:
 #0: ffff8880375f80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90003e7e2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13c0 drivers/tty/n_tty.c:2211
1 lock held by udevd/5975:
 #0: ffff8880227ca3b0 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1043 [inline]
 #0: ffff8880227ca3b0 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_read_iter+0x2ff/0x440 block/fops.c:854
1 lock held by syz-executor/6885:
1 lock held by syz.3.128/6887:
 #0: ffff888035495f58 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: ima_check_last_writer security/integrity/ima/ima_main.c:192 [inline]
 #0: ffff888035495f58 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: ima_file_free+0x196/0x4e0 security/integrity/ima/ima_main.c:233
3 locks held by syz.3.128/6888:
 #0: ffff8880323fa480 (sb_writers#18){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 fs/splice.c:1158
 #1: ffff88805fd5c9f8 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff88805fd5c9f8 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: generic_file_write_iter+0x11f/0x690 mm/filemap.c:4464
 #2: ffff88805fd5c5a8 (&jfs_ip->rdwrlock#3){++++}-{4:4}, at: jfs_get_block+0x153/0xad0 fs/jfs/inode.c:219
3 locks held by syz.3.128/6895:
 #0: ffff888035495f58 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x7fd/0x1c90 security/integrity/ima/ima_main.c:301
 #1: ffff88805fd5cbc8 (mapping.invalidate_lock#5){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1093 [inline]
 #1: ffff88805fd5cbc8 (mapping.invalidate_lock#5){.+.+}-{4:4}, at: do_page_cache_ra mm/readahead.c:333 [inline]
 #1: ffff88805fd5cbc8 (mapping.invalidate_lock#5){.+.+}-{4:4}, at: page_cache_ra_order+0x2a5/0x4b0 mm/readahead.c:538
 #2: ffff88805fd5c5a8 (&jfs_ip->rdwrlock#3){++++}-{4:4}, at: jfs_get_block+0x164/0xad0 fs/jfs/inode.c:221
1 lock held by syz.0.372/9012:
2 locks held by syz.9.373/9008:
 #0: ffff88804db740d0 (&type->s_umount_key#59/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xac0 fs/super.c:345
 #1: ffff888040f50978 (&oi->ip_io_mutex){+.+.}-{4:4}, at: ocfs2_write_block+0x200/0x670 fs/ocfs2/buffer_head_io.c:57
3 locks held by syz.8.374/9010:
2 locks held by sed/9021:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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:161 [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:346 [inline]
 watchdog+0xfd9/0x1030 kernel/hung_task.c:515
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 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: 9010 Comm: syz.8.374 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5749 [inline]
RIP: 0010:preempt_count_add+0x9e/0x190 kernel/sched/core.c:5772
Code: 65 8b 05 d5 26 bb 10 25 ff ff ff 7f 39 f8 75 42 48 8b 5c 24 18 48 89 df e8 bf 05 0d 00 85 c0 74 09 31 db 31 ff e8 b2 05 0d 00 <65> 4c 8b 35 82 26 bb 10 49 81 c6 90 15 00 00 4c 89 f0 48 c1 e8 03
RSP: 0018:ffffc90003157738 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff822e0ddf RCX: ffffffff995a3400
RDX: 0000000000000001 RSI: 0000000000000016 RDI: ffffffff822e0ddf
RBP: 0000000000000001 R08: ffffffff822e1140 R09: ffffffff8ddcb980
R10: dffffc0000000000 R11: fffffbfff1ed4f17 R12: ffff888062cf9b48
R13: 0000000000000013 R14: ffff8880407e8d80 R15: dffffc0000000000
FS:  00007f7623cf66c0(0000) GS:ffff888126432000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04862c1000 CR3: 000000005997e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 mod_memcg_lruvec_state+0x7f/0x360 mm/memcontrol.c:754
 mod_lruvec_state mm/memcontrol.c:787 [inline]
 lruvec_stat_mod_folio+0x212/0x4b0 mm/memcontrol.c:807
 shmem_update_stats mm/shmem.c:875 [inline]
 shmem_add_to_page_cache+0x8eb/0xbf0 mm/shmem.c:925
 shmem_alloc_and_add_folio mm/shmem.c:1998 [inline]
 shmem_get_folio_gfp+0x7e9/0x1a80 mm/shmem.c:2567
 shmem_get_folio mm/shmem.c:2673 [inline]
 shmem_write_begin+0x166/0x320 mm/shmem.c:3327
 generic_perform_write+0x2af/0x8b0 mm/filemap.c:4324
 shmem_file_write_iter+0xfb/0x120 mm/shmem.c:3502
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x629/0xba0 fs/read_write.c:688
 ksys_write+0x156/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7625a5d04e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f7623cf5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7623cf66c0 RCX: 00007f7625a5d04e
RDX: 0000000001000000 RSI: 00007f761b8d6000 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007f7623cf5ee0 R14: 00007f7623cf5ea0 R15: 00007f761b8d6000
 </TASK>