linux-ext4 - [Bug 220623] New: Possible deadlock, system hangs on suspend

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Message-ID: <bug-220623-13602@https.bugzilla.kernel.org/>
Date: Fri, 03 Oct 2025 07:26:50 +0000
From: bugzilla-daemon@...nel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 220623] New: Possible deadlock, system hangs on suspend

https://bugzilla.kernel.org/show_bug.cgi?id=220623

            Bug ID: 220623
           Summary: Possible deadlock, system hangs on suspend
           Product: File System
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: high
          Priority: P3
         Component: ext4
          Assignee: fs_ext4@...nel-bugs.osdl.org
          Reporter: athul.krishna.kr@...tonmail.com
        Regression: No

Created attachment 308745
  --> https://bugzilla.kernel.org/attachment.cgi?id=308745&action=edit
Systems hangs on lid close

Device: Asus GA402RJ
Kernel: 6.16.8-arch3-1

System hangs on lid close. Not reliably reproducible. Sometimes I have to use
it for 30 mins before suspending, sometimes more than an hour to replicate the
issue

Oct 03 00:44:17 ZephyrusG14 kernel: INFO: task systemd-sleep:58322 blocked for
more than 122 seconds.
Oct 03 00:44:17 ZephyrusG14 kernel:       Not tainted 6.16.8-arch3-1 #1
Oct 03 00:44:17 ZephyrusG14 kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 03 00:44:17 ZephyrusG14 kernel: task:systemd-sleep   state:D stack:0    
pid:58322 tgid:58322 ppid:1      task_flags:0x400100 flags:0x00004002
Oct 03 00:44:17 ZephyrusG14 kernel: Call Trace:
Oct 03 00:44:17 ZephyrusG14 kernel:  <TASK>
Oct 03 00:44:17 ZephyrusG14 kernel:  __schedule+0x409/0x1330
Oct 03 00:44:17 ZephyrusG14 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
Oct 03 00:44:17 ZephyrusG14 kernel:  ? select_task_rq_fair+0x8b9/0x2190
Oct 03 00:44:17 ZephyrusG14 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
Oct 03 00:44:17 ZephyrusG14 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
Oct 03 00:44:17 ZephyrusG14 kernel:  ? mod_memcg_lruvec_state+0x1a4/0x200
Oct 03 00:44:17 ZephyrusG14 kernel:  schedule+0x27/0xd0
Oct 03 00:44:17 ZephyrusG14 kernel:  io_schedule+0x46/0x70
Oct 03 00:44:17 ZephyrusG14 kernel:  folio_wait_bit_common+0x133/0x330
Oct 03 00:44:17 ZephyrusG14 kernel:  ? __pfx_wake_page_function+0x10/0x10
Oct 03 00:44:17 ZephyrusG14 kernel:  folio_wait_writeback+0x2e/0x80
Oct 03 00:44:17 ZephyrusG14 kernel:  __filemap_fdatawait_range+0x7d/0xd0
Oct 03 00:44:17 ZephyrusG14 kernel:  filemap_fdatawait_keep_errors+0x1e/0x50
Oct 03 00:44:17 ZephyrusG14 kernel:  sync_inodes_sb+0x229/0x2b0
Oct 03 00:44:17 ZephyrusG14 kernel:  ? __pfx_sync_inodes_one_sb+0x10/0x10
Oct 03 00:44:17 ZephyrusG14 kernel:  __iterate_supers+0xdc/0x140
Oct 03 00:44:17 ZephyrusG14 kernel:  ksys_sync+0x43/0xb0
Oct 03 00:44:17 ZephyrusG14 kernel:  ksys_sync_helper+0x17/0x80
Oct 03 00:44:17 ZephyrusG14 kernel:  pm_suspend.cold+0x128/0x36b
Oct 03 00:44:17 ZephyrusG14 kernel:  state_store+0x6c/0xd0
Oct 03 00:44:17 ZephyrusG14 kernel:  kernfs_fop_write_iter+0x14d/0x200
Oct 03 00:44:17 ZephyrusG14 kernel:  vfs_write+0x25d/0x480
Oct 03 00:44:17 ZephyrusG14 kernel:  ksys_write+0x73/0xf0
Oct 03 00:44:17 ZephyrusG14 kernel:  do_syscall_64+0x81/0x970
Oct 03 00:44:17 ZephyrusG14 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
Oct 03 00:44:17 ZephyrusG14 kernel:  ? do_user_addr_fault+0x21a/0x690
Oct 03 00:44:17 ZephyrusG14 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
Oct 03 00:44:17 ZephyrusG14 kernel:  ? exc_page_fault+0x7e/0x1a0
Oct 03 00:44:17 ZephyrusG14 kernel:  entry_SYSCALL_64_after_hwframe+0x76/0x7e
Oct 03 00:44:17 ZephyrusG14 kernel: RIP: 0033:0x7fde89c931ce
Oct 03 00:44:17 ZephyrusG14 kernel: RSP: 002b:00007ffc481f5570 EFLAGS: 00000202
ORIG_RAX: 0000000000000001
Oct 03 00:44:17 ZephyrusG14 kernel: RAX: ffffffffffffffda RBX: 000055d772714310
RCX: 00007fde89c931ce
Oct 03 00:44:17 ZephyrusG14 kernel: RDX: 0000000000000004 RSI: 000055d77271c770
RDI: 0000000000000007
Oct 03 00:44:17 ZephyrusG14 kernel: RBP: 00007ffc481f5580 R08: 0000000000000000
R09: 0000000000000000
Oct 03 00:44:17 ZephyrusG14 kernel: R10: 0000000000000000 R11: 0000000000000202
R12: 0000000000000004
Oct 03 00:44:17 ZephyrusG14 kernel: R13: 0000000000000004 R14: 000055d77271c770
R15: 00007ffc481f5710
Oct 03 00:44:17 ZephyrusG14 kernel:  </TASK>

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