Submitted by Ritesh Raj Sarraf on
It is interesting how a user-space task could lead to hinder a Linux kernel software suspend operation.
[11735.155443] PM: suspend entry (deep) [11735.155445] PM: Syncing filesystems ... done. [11735.215091] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11735.215172] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11735.558676] rfkill: input handler enabled [11735.608859] (NULL device *): firmware: direct-loading firmware rtlwifi/rtl8723befw_36.bin [11735.609910] (NULL device *): firmware: direct-loading firmware rtl_bt/rtl8723b_fw.bin [11735.611871] Freezing user space processes ... [11755.615603] Freezing of tasks failed after 20.003 seconds (1 tasks refusing to freeze, wq_busy=0): [11755.615854] digikam D 0 13262 13245 0x00000004 [11755.615859] Call Trace: [11755.615873] __schedule+0x28e/0x880 [11755.615878] schedule+0x2c/0x80 [11755.615889] request_wait_answer+0xa3/0x220 [fuse] [11755.615895] ? finish_wait+0x80/0x80 [11755.615902] __fuse_request_send+0x86/0x90 [fuse] [11755.615907] fuse_request_send+0x27/0x30 [fuse] [11755.615914] fuse_send_readpages.isra.30+0xd1/0x120 [fuse] [11755.615920] fuse_readpages+0xfd/0x110 [fuse] [11755.615928] __do_page_cache_readahead+0x200/0x2d0 [11755.615936] filemap_fault+0x37b/0x640 [11755.615940] ? filemap_fault+0x37b/0x640 [11755.615944] ? filemap_map_pages+0x179/0x320 [11755.615950] __do_fault+0x1e/0xb0 [11755.615953] __handle_mm_fault+0xc8a/0x1160 [11755.615958] handle_mm_fault+0xb1/0x200 [11755.615964] __do_page_fault+0x257/0x4d0 [11755.615968] do_page_fault+0x2e/0xd0 [11755.615973] page_fault+0x22/0x30 [11755.615976] RIP: 0033:0x7f32d3c7ff90 [11755.615978] RSP: 002b:00007ffd887c9d18 EFLAGS: 00010246 [11755.615981] RAX: 00007f32d3fc9c50 RBX: 000000000275e440 RCX: 0000000000000003 [11755.615982] RDX: 0000000000000002 RSI: 00007ffd887c9f10 RDI: 000000000275e440 [11755.615984] RBP: 00007ffd887c9f10 R08: 000000000275e820 R09: 00000000018d2f40 [11755.615986] R10: 0000000000000002 R11: 0000000000000000 R12: 000000000189cbc0 [11755.615987] R13: 0000000001839dc0 R14: 000000000275e440 R15: 0000000000000000 [11755.616014] OOM killer enabled. [11755.616015] Restarting tasks ... done. [11755.817640] PM: suspend exit [11755.817698] PM: suspend entry (s2idle) [11755.817700] PM: Syncing filesystems ... done. [11755.983156] rfkill: input handler disabled [11756.030209] rfkill: input handler enabled [11756.073529] Freezing user space processes ... [11776.084309] Freezing of tasks failed after 20.010 seconds (2 tasks refusing to freeze, wq_busy=0): [11776.084630] digikam D 0 13262 13245 0x00000004 [11776.084636] Call Trace: [11776.084653] __schedule+0x28e/0x880 [11776.084659] schedule+0x2c/0x80 [11776.084672] request_wait_answer+0xa3/0x220 [fuse] [11776.084680] ? finish_wait+0x80/0x80 [11776.084688] __fuse_request_send+0x86/0x90 [fuse] [11776.084695] fuse_request_send+0x27/0x30 [fuse] [11776.084703] fuse_send_readpages.isra.30+0xd1/0x120 [fuse] [11776.084711] fuse_readpages+0xfd/0x110 [fuse] [11776.084721] __do_page_cache_readahead+0x200/0x2d0 [11776.084730] filemap_fault+0x37b/0x640 [11776.084735] ? filemap_fault+0x37b/0x640 [11776.084743] ? __update_load_avg_blocked_se.isra.33+0xa1/0xf0 [11776.084749] ? filemap_map_pages+0x179/0x320 [11776.084755] __do_fault+0x1e/0xb0 [11776.084759] __handle_mm_fault+0xc8a/0x1160 [11776.084765] handle_mm_fault+0xb1/0x200 [11776.084772] __do_page_fault+0x257/0x4d0 [11776.084777] do_page_fault+0x2e/0xd0 [11776.084783] page_fault+0x22/0x30 [11776.084787] RIP: 0033:0x7f31ddf315e0 [11776.084789] RSP: 002b:00007ffd887ca068 EFLAGS: 00010202 [11776.084793] RAX: 00007f31de13c350 RBX: 00000000040be3f0 RCX: 000000000283da60 [11776.084795] RDX: 0000000000000001 RSI: 00000000040be3f0 RDI: 00000000040be3f0 [11776.084797] RBP: 00007f32d3fca1e0 R08: 0000000005679250 R09: 0000000000000020 [11776.084799] R10: 00000000058fc1b0 R11: 0000000004b9ac50 R12: 0000000000000000 [11776.084801] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [11776.084806] QXcbEventReader D 0 13268 13245 0x00000004 [11776.084810] Call Trace: [11776.084817] __schedule+0x28e/0x880 [11776.084823] schedule+0x2c/0x80 [11776.084827] rwsem_down_write_failed_killable+0x25a/0x490 [11776.084832] call_rwsem_down_write_failed_killable+0x17/0x30 [11776.084836] ? call_rwsem_down_write_failed_killable+0x17/0x30 [11776.084842] down_write_killable+0x2d/0x50 [11776.084848] do_mprotect_pkey+0xa9/0x2f0 [11776.084854] SyS_mprotect+0x13/0x20 [11776.084859] system_call_fast_compare_end+0xc/0x97 [11776.084861] RIP: 0033:0x7f32d1f7c057 [11776.084863] RSP: 002b:00007f32cbb8c8d8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a [11776.084867] RAX: ffffffffffffffda RBX: 00007f32c4000020 RCX: 00007f32d1f7c057 [11776.084869] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 00007f32c4024000 [11776.084871] RBP: 00000000000000c5 R08: 00007f32c4000000 R09: 0000000000024000 [11776.084872] R10: 00007f32c4024000 R11: 0000000000000206 R12: 00000000000000a0 [11776.084874] R13: 00007f32c4022f60 R14: 0000000000001000 R15: 00000000000000e0 [11776.084906] OOM killer enabled. [11776.084907] Restarting tasks ... done. [11776.289655] PM: suspend exit [11776.459624] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready [11776.469521] rfkill: input handler disabled [11776.978733] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready [11777.038879] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready [11778.022062] wlp1s0: authenticate with 50:8f:4c:82:4d:dd [11778.033155] wlp1s0: send auth to 50:8f:4c:82:4d:dd (try 1/3) [11778.038522] wlp1s0: authenticated [11778.041511] wlp1s0: associate with 50:8f:4c:82:4d:dd (try 1/3) [11778.059860] wlp1s0: RX AssocResp from 50:8f:4c:82:4d:dd (capab=0x431 status=0 aid=5) [11778.060253] wlp1s0: associated [11778.060308] IPv6: ADDRCONF(NETDEV_CHANGE): wlp1s0: link becomes ready [11778.987669] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11779.117608] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11779.160930] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11779.784045] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11779.913668] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch [11779.961517] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch 11:58 ♒♒♒ ☺
Comments
Make no mistake, fuse is not
Submitted by adam (not verified) on
Make no mistake, fuse is not userspace. I have seen fuse hangups many times.
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