On Fri, May 03, 2019 at 10:17:39PM +0200, François Valenduc wrote: > Commit 8c37f7c23c02f6ac020ffdc746026c2363b23a5a ( workqueue: Try to > catch flush_work() without INIT_WORK().) causes the following warning > when mounting encrypted filesystems: > > May 3 21:29:33 pc-francois kernel: [ 20.202934] WARNING: CPU: 1 PID: > 1719 at kernel/workqueue.c:2911 __flush_work+0x1a4/0x1c0 > May 3 21:29:33 pc-francois kernel: [ 20.205470] Modules linked in: > uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videodev > videobuf2_common arc4 rtl8188ee rtl_pci rtlwifi mac80211 cfg80211 > snd_hda_codec_hdmi alx mdio psmou > se snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core > snd_pcm snd_timer snd soundcore evdev coretemp battery nls_utf8 > nls_cp850 efivars vfat fat ac hwmon vboxpci(O) vboxnetadp(O) > vboxnetflt(O) vboxdrv(O) nbd kvm_intel nfsd au > th_rpcgss kvm irqbypass dm_thin_pool dm_persistent_data dm_bio_prison > dm_round_robin dm_multipath xts cbc fuse xfs nfs lockd grace sunrpc > btrfs xor zstd_decompress zstd_compress xxhash raid6_pq crc32c_generic > libcrc32c zlib_inflate ext4 > mbcache jbd2 dm_snapshot dm_bufio dm_crypt dm_mirror dm_region_hash > dm_log dm_mod dax ohci_hcd sr_mod sd_mod cdrom usb_storage hid_generic > May 3 21:29:33 pc-francois kernel: [ 20.218000] usbhid hid xhci_pci > aesni_intel aes_x86_64 crypto_simd cryptd glue_helper ehci_pci ahci > xhci_hcd ehci_hcd libahci usbcore usb_common > May 3 21:29:33 pc-francois kernel: [ 20.220780] CPU: 1 PID: 1719 > Comm: systemd-cryptse Tainted: G W O 4.19.39-rc1 #41 > May 3 21:29:33 pc-francois kernel: [ 20.223587] Hardware name: > TOSHIBA SATELLITE C70-A/Type2 - Board Product Name1, BIOS 1.00 04/30/2013 > May 3 21:29:33 pc-francois kernel: [ 20.226435] RIP: > 0010:__flush_work+0x1a4/0x1c0 > May 3 21:29:33 pc-francois kernel: [ 20.229285] Code: 20 e9 f8 fe ff > ff fb 31 c0 eb 8e 8b 4d 00 48 8b 55 08 83 e1 08 48 0f ba 6d 00 03 80 c9 > f0 e9 54 ff ff ff 0f 0b e9 6f ff ff ff <0f> 0b 31 c0 e9 66 ff ff ff e8 > 7e 8b fe ff 66 66 2e 0 > f 1f 84 00 00 > May 3 21:29:33 pc-francois kernel: [ 20.235471] RSP: > 0018:ffff956f8033fb50 EFLAGS: 00010246 > May 3 21:29:33 pc-francois kernel: [ 20.238618] RAX: 0000000000000000 > RBX: ffff8ff5bce9b9d0 RCX: 0000000000000000 > May 3 21:29:33 pc-francois kernel: [ 20.241801] RDX: 0000000000000001 > RSI: 0000000000000001 RDI: ffff8ff5bce9b9d0 > May 3 21:29:33 pc-francois kernel: [ 20.244991] RBP: ffff8ff5bce9b9d0 > R08: 0000000000000050 R09: ffff8ff5c3019380 > May 3 21:29:33 pc-francois kernel: [ 20.248178] R10: 0000000000000ab8 > R11: ffff8ff5c305e688 R12: 0000000000000000 > May 3 21:29:33 pc-francois kernel: [ 20.251389] R13: ffff956f8033fbe8 > R14: ffffffff8c0609f0 R15: ffff956f8033fd08 > May 3 21:29:33 pc-francois kernel: [ 20.254624] FS: > 00007feaa0d15840(0000) GS:ffff8ff5c3040000(0000) knlGS:0000000000000000 > May 3 21:29:33 pc-francois kernel: [ 20.257908] CS: 0010 DS: 0000 > ES: 0000 CR0: 0000000080050033 > May 3 21:29:33 pc-francois kernel: [ 20.261198] CR2: 00007f9316ec25a0 > CR3: 000000033cf8c003 CR4: 00000000001606a0 > May 3 21:29:33 pc-francois kernel: [ 20.264520] Call Trace: > May 3 21:29:33 pc-francois kernel: [ 20.267837] ? > _raw_spin_unlock_irq+0xe/0x20 > May 3 21:29:33 pc-francois kernel: [ 20.271173] ? > finish_task_switch+0x8a/0x2a0 > May 3 21:29:33 pc-francois kernel: [ 20.274499] ? __switch_to+0x2e/0x380 > May 3 21:29:33 pc-francois kernel: [ 20.277820] ? > __switch_to_asm+0x34/0x70 > May 3 21:29:33 pc-francois kernel: [ 20.281136] > __cancel_work_timer+0xfe/0x180 > May 3 21:29:33 pc-francois kernel: [ 20.284315] ? > remove_all+0x30/0x30 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.287332] ? > _raw_spin_unlock_irqrestore+0xf/0x30 > May 3 21:29:33 pc-francois kernel: [ 20.290326] ? > remove_all+0x30/0x30 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.293300] blk_sync_queue+0x1d/0x80 > May 3 21:29:33 pc-francois kernel: [ 20.296253] > blk_cleanup_queue+0xc0/0x140 > May 3 21:29:33 pc-francois kernel: [ 20.299198] > cleanup_mapped_device+0xc3/0x100 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.302158] free_dev+0x38/0xa0 > [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.305113] ? > remove_all+0x30/0x30 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.308044] > dev_remove+0xce/0x110 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.310961] > ctl_ioctl+0x1a7/0x3a0 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.313881] > dm_ctl_ioctl+0x5/0x10 [dm_mod] > May 3 21:29:33 pc-francois kernel: [ 20.316810] do_vfs_ioctl+0xa0/0x610 > May 3 21:29:33 pc-francois kernel: [ 20.319738] ? > ksys_semctl+0x124/0x160 > May 3 21:29:33 pc-francois kernel: [ 20.322674] ? > preempt_count_add+0x74/0xa0 > May 3 21:29:33 pc-francois kernel: [ 20.325628] ksys_ioctl+0x35/0x70 > May 3 21:29:33 pc-francois kernel: [ 20.328586] > __x64_sys_ioctl+0x11/0x20 > May 3 21:29:33 pc-francois kernel: [ 20.331536] do_syscall_64+0x43/0xf0 > May 3 21:29:33 pc-francois kernel: [ 20.334493] > entry_SYSCALL_64_after_hwframe+0x44/0xa9 > May 3 21:29:33 pc-francois kernel: [ 20.337478] RIP: 0033:0x7feaa2d10b17 > May 3 21:29:33 pc-francois kernel: [ 20.340462] Code: 00 00 00 75 0c > 48 c7 c0 ff ff ff ff 48 83 c4 18 c3 e8 7d e1 01 00 66 2e 0f 1f 84 00 00 > 00 00 00 0f 1f 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 > 8b 0d 49 b3 0c 00 f7 d8 64 89 01 48 > May 3 21:29:33 pc-francois kernel: [ 20.346929] RSP: > 002b:00007ffc4e75db58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > May 3 21:29:33 pc-francois kernel: [ 20.350202] RAX: ffffffffffffffda > RBX: 00007feaa15156e0 RCX: 00007feaa2d10b17 > May 3 21:29:33 pc-francois kernel: [ 20.353493] RDX: 00005585e2127a80 > RSI: 00000000c138fd04 RDI: 0000000000000004 > May 3 21:29:33 pc-francois kernel: [ 20.356793] RBP: 00007feaa154f4c3 > R08: 000000000000005f R09: 00005585e2103ec0 > May 3 21:29:33 pc-francois kernel: [ 20.360101] R10: 00007feaa2d9ef80 > R11: 0000000000000246 R12: 00005585e2127a80 > May 3 21:29:33 pc-francois kernel: [ 20.363363] R13: 0000000000000001 > R14: 00005585e2127b30 R15: 00005585e2103650 > May 3 21:29:33 pc-francois kernel: [ 20.366616] ---[ end trace > 170b245abe91a71f ]--- > May 3 21:29:33 pc-francois kernel: [ 21.000999] EXT4-fs (dm-14): > mounted filesystem with ordered data mode. Opts: (null) > > Finally If I revert this commit, the problem doesn't occur. I am using > filesystems encrypted with luks formatted with ext4. The filesystems are > on LVM volumes. > Does anybody have an idea about this problem ? Great, it did what it was trying to do :) Do you have this problem on 5.0.y or Linus's current tree? thanks, greg k-h
