INFO: task syz-executor.1:14979 blocked for more than 143 seconds.
      Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:24968 pid:14979 ppid:5073   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 io_schedule+0x8c/0x100 kernel/sched/core.c:9028
 folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
 btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8261
 do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
 wp_page_shared mm/memory.c:3294 [inline]
 do_wp_page+0x559/0x3a70 mm/memory.c:3376
 handle_pte_fault mm/memory.c:4955 [inline]
 __handle_mm_fault mm/memory.c:5079 [inline]
 handle_mm_fault+0x1c58/0x5410 mm/memory.c:5233
 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline]
 handle_page_fault arch/x86/mm/fault.c:1486 [inline]
 exc_page_fault+0x266/0x7c0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f5c1382b331
RSP: 002b:00007fffe01f1910 EFLAGS: 00010246
RAX: 0000000020001600 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 000055555688a360
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fffe01f8080 R11: 0000000000018ea8 R12: 00007f5c13406df8
R13: fffffffffffffffe R14: 00007f5c13400000 R15: 00007f5c13406e00
 </TASK>
INFO: task syz-executor.1:14980 blocked for more than 144 seconds.
      Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:23560 pid:14980 ppid:5073   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline]
 wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:763
 lock_extent+0x1c0/0x270 fs/btrfs/extent-io-tree.c:1755
 btrfs_lock_and_flush_ordered_range+0xd3/0x220 fs/btrfs/ordered-data.c:1099
 contiguous_readpages fs/btrfs/extent_io.c:1201 [inline]
 extent_readahead+0x1086/0x15c0 fs/btrfs/extent_io.c:2304
 read_pages+0x183/0x830 mm/readahead.c:160
 page_cache_ra_unbounded+0x697/0x7c0 mm/readahead.c:269
 do_sync_mmap_readahead+0x7b6/0x9a0 mm/filemap.c:3205
 filemap_fault+0x81b/0x1810 mm/filemap.c:3297
 __do_fault+0x136/0x500 mm/memory.c:4198
 do_read_fault mm/memory.c:4547 [inline]
 do_fault mm/memory.c:4670 [inline]
 do_pte_missing mm/memory.c:3664 [inline]
 handle_pte_fault mm/memory.c:4939 [inline]
 __handle_mm_fault mm/memory.c:5079 [inline]
 handle_mm_fault+0x4172/0x5410 mm/memory.c:5233
 faultin_page mm/gup.c:959 [inline]
 __get_user_pages+0x74a/0x1340 mm/gup.c:1258
 populate_vma_page_range+0x2c3/0x3b0 mm/gup.c:1649
 __mm_populate+0x279/0x450 mm/gup.c:1758
 mm_populate include/linux/mm.h:3213 [inline]
 vm_mmap_pgoff+0x300/0x410 mm/util.c:548
 ksys_mmap_pgoff+0x4ff/0x6d0 mm/mmap.c:1409
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5c1387cae9
RSP: 002b:00007f5c145f70c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5c1399bf80 RCX: 00007f5c1387cae9
RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f5c138c847a R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5c1399bf80 R15: 00007fffe01f1868
 </TASK>
INFO: task syz-executor.1:15020 blocked for more than 145 seconds.
      Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:23832 pid:15020 ppid:5073   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline]
 wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:763
 lock_extent+0x1c0/0x270 fs/btrfs/extent-io-tree.c:1755
 btrfs_page_mkwrite+0x5bd/0xd10 fs/btrfs/inode.c:8271
 do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
 wp_page_shared mm/memory.c:3294 [inline]
 do_wp_page+0x559/0x3a70 mm/memory.c:3376
 handle_pte_fault mm/memory.c:4955 [inline]
 __handle_mm_fault mm/memory.c:5079 [inline]
 handle_mm_fault+0x1c58/0x5410 mm/memory.c:5233
 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline]
 handle_page_fault arch/x86/mm/fault.c:1486 [inline]
 exc_page_fault+0x266/0x7c0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0xb0 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc90003b3f4d0 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020001318 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc90003b3f580 RDI: 00000000200012e0
RBP: ffffc90003b3f638 R08: ffffc90003b3f5b7 R09: 1ffff92000767eb6
R10: dffffc0000000000 R11: fffff52000767eb7 R12: 0000000000000038
R13: ffffc90003b3f580 R14: 00000000200012e0 R15: ffffc90003b3f580
 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
 _copy_to_user+0x86/0xa0 lib/usercopy.c:41
 copy_to_user include/linux/uaccess.h:191 [inline]
 fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144
 emit_fiemap_extent+0x256/0x410 fs/btrfs/extent_io.c:2532
 extent_fiemap+0xeee/0x1fe0 fs/btrfs/extent_io.c:3022
 btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7943
 ioctl_fiemap fs/ioctl.c:219 [inline]
 do_vfs_ioctl+0x19db/0x2b30 fs/ioctl.c:810
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5c1387cae9
RSP: 002b:00007f5c145d60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5c1399c050 RCX: 00007f5c1387cae9
RDX: 00000000200012c0 RSI: 00000000c020660b RDI: 0000000000000009
RBP: 00007f5c138c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5c1399c050 R15: 00007fffe01f1868
 </TASK>
INFO: task syz-executor.1:15024 blocked for more than 145 seconds.
      Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:22888 pid:15024 ppid:5073   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
 rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
 inode_lock include/linux/fs.h:771 [inline]
 btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:377
 btrfs_sync_file+0x55d/0x1330 fs/btrfs/file.c:1804
 generic_write_sync include/linux/fs.h:2499 [inline]
 btrfs_do_write_iter+0xb45/0x1020 fs/btrfs/file.c:1677
 do_iter_write+0x84f/0xde0 fs/read_write.c:860
 iter_file_splice_write+0x86d/0x1010 fs/splice.c:739
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0xea/0x1c0 fs/splice.c:1145
 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1091
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1197
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5c1387cae9
RSP: 002b:00007f5c145b50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5c1399c120 RCX: 00007f5c1387cae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f5c138c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800020 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5c1399c120 R15: 00007fffe01f1868
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8d328e30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8d3291f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
 #0: ffffffff8d328c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by syslogd/4452:
 #0: ffff8880b983bf98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
2 locks held by kworker/0:3/4761:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000367fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by getty/4776:
 #0: ffff88814b329098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
2 locks held by kworker/1:4/5109:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90005207d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:6/5111:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000523fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/0:5/5112:
 #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000525fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:7/5138:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000527fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
3 locks held by kworker/0:8/5184:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000544fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
 #2: ffffffff8d32e2f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
 #2: ffffffff8d32e2f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
3 locks held by kworker/0:11/5369:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90006177d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
 #2: ffffffff8d32e2f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
 #2: ffffffff8d32e2f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/1:9/5425:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90006127d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:12/5428:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90006287d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:14/5430:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90006777d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:15/6022:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc900158d7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/0:12/6114:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc90015b97d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/0:15/6742:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000340fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:17/6814:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc9000347fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
2 locks held by kworker/1:18/8741:
 #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
 #1: ffffc900070f7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
3 locks held by syz-executor.1/14979:
 #0: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:167 [inline]
 #0: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5261 [inline]
 #0: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5323
 #1: ffff88807b354508 (sb_pagefaults#5){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
 #2: ffff8880364bbbf8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8260
1 lock held by syz-executor.1/14980:
 #0: ffff8880364bbf10 (mapping.invalidate_lock#6){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
 #0: ffff8880364bbf10 (mapping.invalidate_lock#6){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
4 locks held by syz-executor.1/15020:
 #0: ffff8880364bbd70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
 #0: ffff8880364bbd70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:369
 #1: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:167 [inline]
 #1: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5261 [inline]
 #1: ffff888012868b20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5323
 #2: ffff88807b354508 (sb_pagefaults#5){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
 #3: ffff8880364bbbf8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8260
2 locks held by syz-executor.1/15024:
 #0: ffff88807b354410 (sb_writers#15){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff8880364bbd70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline]
 #1: ffff8880364bbd70 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:377

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4452 Comm: syslogd Not tainted 6.5.0-rc5-syzkaller-00029-g14f9643dc90a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:cgroup_parent include/linux/cgroup.h:497 [inline]
RIP: 0010:cgroup_account_cputime include/linux/cgroup.h:721 [inline]
RIP: 0010:update_curr+0x51a/0xa60 kernel/sched/fair.c:930
Code: 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 ef e8 08 f5 81 00 48 8b 5d 00 48 8d ab 10 01 00 00 48 89 e8 48 c1 e8 03 <48> b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 ef e8 de f4
RSP: 0018:ffffc9000306f2a8 EFLAGS: 00000806
RAX: 1ffffffff1a6a484 RBX: ffffffff8d352310 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8b0aa0e0 RDI: ffffffff8b58a480
RBP: ffffffff8d352420 R08: ffffffff8e9865ef R09: 1ffffffff1d30cbd
R10: dffffc0000000000 R11: fffffbfff1d30cbe R12: ffff8880b983c068
R13: 0000003674fec95c R14: ffff88807f12bb80 R15: ffff88801f602050
FS:  00007fca5a28f380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555567af978 CR3: 0000000029e33000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 dequeue_entity+0x85/0x12f0 kernel/sched/fair.c:4939
 dequeue_task_fair+0x274/0x13e0 kernel/sched/fair.c:6414
 deactivate_task kernel/sched/core.c:2121 [inline]
 __schedule+0x612/0x48f0 kernel/sched/core.c:6664
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
 __skb_wait_for_more_packets+0x398/0x5f0 net/core/datagram.c:120
 __unix_dgram_recvmsg+0x355/0x1260 net/unix/af_unix.c:2375
 sock_recvmsg_nosec net/socket.c:1020 [inline]
 sock_recvmsg net/socket.c:1041 [inline]
 sock_read_iter+0x3ab/0x500 net/socket.c:1107
 call_read_iter include/linux/fs.h:1871 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x795/0xb00 fs/read_write.c:470
 ksys_read+0x1a0/0x2c0 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fca5a3e3b6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcd22aa648 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fca5a3e3b6a
RDX: 00000000000000ff RSI: 00005578d20b3950 RDI: 0000000000000000
RBP: 00005578d20b3910 R08: 0000000000000001 R09: 0000000000000000
R10: 00007fca5a5823a3 R11: 0000000000000246 R12: 00005578d20b39a3
R13: 00005578d20b3950 R14: 0000000000000000 R15: 00007fca5a5c0a80
 </TASK>