INFO: task kworker/u8:8:11515 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8    state:D stack:24016 pid:11515 tgid:11515 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 __debugfs_file_removed fs/debugfs/inode.c:779 [inline]
 remove_one+0x30f/0x420 fs/debugfs/inode.c:786
 simple_recursive_removal+0x4e2/0x8e0 fs/libfs.c:643
 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:809
 nsim_dev_health_exit+0x3b/0xe0 drivers/net/netdevsim/health.c:227
 nsim_dev_reload_destroy+0x143/0x4d0 drivers/net/netdevsim/dev.c:1664
 nsim_dev_reload_down+0x6e/0xd0 drivers/net/netdevsim/dev.c:968
 devlink_reload+0x17f/0x760 net/devlink/dev.c:461
 devlink_pernet_pre_exit+0x1a1/0x2b0 net/devlink/core.c:509
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0x488/0xbd0 net/core/net_namespace.c:628
 process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz.4.1838:12327 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1838      state:D stack:24160 pid:12327 tgid:12326 ppid:11916  flags:0x00020004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 __mutex_lock_common kernel/locking/mutex.c:665 [inline]
 __mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
 devlink_health_report+0x3c5/0x9d0 net/devlink/health.c:627
 nsim_dev_health_break_write+0x167/0x210 drivers/net/netdevsim/health.c:162
 full_proxy_write+0xfd/0x1b0 fs/debugfs/file.c:369
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd0bd85d29
RSP: 002b:00007fcd0cbf9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcd0bf75fa0 RCX: 00007fcd0bd85d29
RDX: 00000000000000ef RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007fcd0be01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcd0bf75fa0 R15: 00007ffc254abe38
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
 watchdog+0xf14/0x1240 kernel/hung_task.c:397
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5186 Comm: syslogd Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:page_copy_sane+0x2/0x2d0 lib/iov_iter.c:327
Code: e4 36 65 fd e9 d8 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 45 31 f6 41 55 41 54 49 89 fc 55 48 89 d5 53 48 89 f3 e8 c5
RSP: 0018:ffffc900031e7a58 EFLAGS: 00000293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc900031e7d98
RDX: 000000000000005f RSI: 0000000000000246 RDI: ffffea0000e03780
RBP: 0000000000000246 R08: 0000000000000000 R09: ffffed1004edec00
R10: ffff8880276f6007 R11: 0000000000000000 R12: ffffc900031e7d98
R13: ffffea0000e03780 R14: 1ffff9200063cf5f R15: 000000000000005f
FS:  00007f7c6d365380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fe04ff8 CR3: 0000000034262000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 copy_page_from_iter_atomic+0xae/0x1810 lib/iov_iter.c:467
 copy_folio_from_iter_atomic include/linux/uio.h:201 [inline]
 generic_perform_write+0x4a1/0x920 mm/filemap.c:4058
 shmem_file_write_iter+0x10e/0x140 mm/shmem.c:3296
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x5ae/0x1150 fs/read_write.c:679
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c6d4b9bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe27025ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7c6d4b9bf2
RDX: 000000000000005f RSI: 000055ab2689fc50 RDI: 0000000000000003
RBP: 000055ab2689fc50 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f7c6d6583a3 R11: 0000000000000246 R12: 000000000000005f
R13: 00007f7c6d365300 R14: 0000000000000004 R15: 000055ab2689fa60
 </TASK>