Description of problem:

I'm seeing this on Fedora 29 netinstall images on every boot. Looks like anaconda starts udisks2 which calls dumpe2fs (?maybe I don't see any dumpe2fs references in udisks2 code itself), but is dumpe2fs trying to write something and if so why?

dm-1 is a read only 'live-base' image which is ext4.

Curiously it's not happening on lives. 


Version-Release number of selected component (if applicable):
udisks2-2.8.0-1.fc29
e2fsprogs-1.44.3-1.fc29.x86_64
kernel-4.18.5-300.fc29.x86_64



How reproducible:
Every boot


Steps to Reproduce:
1. Boot Fedora-Workstation-netinst-x86_64-29_Beta-1.1.iso
2.
3.

Actual results:

Right after udisks starts up:
[   42.920067] localhost kernel: generic_make_request: Trying to write to read-only block-device dm-1 (partno 0)
[   42.920112] localhost kernel: WARNING: CPU: 1 PID: 1561 at block/blk-core.c:2161 generic_make_request_checks+0x4b3/0x600

Kernel is tainted 512

Expected results:

Maybe EIO? But not a kernel warning.

Additional info:

complete journal is attached


[   42.783375] localhost udisksd[1555]: udisks daemon version 2.8.0 starting
[   42.920063] localhost kernel: ------------[ cut here ]------------
[   42.920067] localhost kernel: generic_make_request: Trying to write to read-only block-device dm-1 (partno 0)
[   42.920112] localhost kernel: WARNING: CPU: 1 PID: 1561 at block/blk-core.c:2161 generic_make_request_checks+0x4b3/0x600
[   42.920114] localhost kernel: Modules linked in: zram scsi_dh_rdac scsi_dh_emc scsi_dh_alua virtio_balloon joydev i2c_piix4 loop nls_utf8 isofs qxl crct10dif_pclmul crc32_pclmul drm_kms_helper ghash_clmulni_intel ttm virtio_console 8021q serio_raw garp mrp stp llc virtio_blk drm virtio_net net_failover failover ata_generic pata_acpi qemu_fw_cfg sunrpc mcryptd sha256_ssse3 dm_crypt dm_round_robin dm_multipath linear raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_intel raid1 raid0 iscsi_ibft iscsi_boot_sysfs floppy iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi squashfs zstd_decompress xxhash cramfs
[   42.920175] localhost kernel: CPU: 1 PID: 1561 Comm: dumpe2fs Not tainted 4.18.5-300.fc29.x86_64 #1
[   42.920177] localhost kernel: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
[   42.920180] localhost kernel: RIP: 0010:generic_make_request_checks+0x4b3/0x600
[   42.920181] localhost kernel: Code: 54 03 00 00 48 89 df 48 8d 74 24 08 c6 05 4e 01 f1 00 01 e8 3f 5e 01 00 48 c7 c7 68 8e 10 b4 44 89 e2 48 89 c6 e8 37 2f c8 ff <0f> 0b 4c 8b 63 08 e9 dd fb ff ff 49 8b 76 08 48 85 f6 74 3e 89 c0 
[   42.920228] localhost kernel: RSP: 0018:ffffae7b00d17d98 EFLAGS: 00010282
[   42.920230] localhost kernel: RAX: 0000000000000000 RBX: ffff9e41dcfb9100 RCX: 0000000000000006
[   42.920232] localhost kernel: RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff9e421f716930
[   42.920233] localhost kernel: RBP: ffff9e41dd097440 R08: 0000000000000060 R09: 0000000000000001
[   42.920235] localhost kernel: R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[   42.920236] localhost kernel: R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   42.920238] localhost kernel: FS:  00007f1aa18af780(0000) GS:ffff9e421f700000(0000) knlGS:0000000000000000
[   42.920240] localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.920241] localhost kernel: CR2: 00007f1aa199d5e0 CR3: 0000000046f28000 CR4: 00000000000006e0
[   42.920247] localhost kernel: Call Trace:
[   42.920279] localhost kernel:  generic_make_request+0x5b/0x410
[   42.920284] localhost kernel:  ? mempool_alloc+0x70/0x1a0
[   42.920289] localhost kernel:  ? apic_timer_interrupt+0xa/0x20
[   42.920291] localhost kernel:  submit_bio+0x45/0x140
[   42.920294] localhost kernel:  ? bio_alloc_bioset+0xdc/0x210
[   42.920296] localhost kernel:  submit_bio_wait+0x53/0x80
[   42.920300] localhost kernel:  blkdev_issue_flush+0x7c/0xb0
[   42.920305] localhost kernel:  blkdev_fsync+0x2f/0x40
[   42.920309] localhost kernel:  do_fsync+0x38/0x70
[   42.920312] localhost kernel:  __x64_sys_fsync+0x10/0x20
[   42.920316] localhost kernel:  do_syscall_64+0x5b/0x160
[   42.920319] localhost kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   42.920323] localhost kernel: RIP: 0033:0x7f1aa19c7d68
[   42.920324] localhost kernel: Code: 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 8d 05 b5 09 0d 00 8b 00 85 c0 75 17 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 40 c3 0f 1f 80 00 00 00 00 53 89 fb 48 83 ec 
[   42.920370] localhost kernel: RSP: 002b:00007fff09d18c68 EFLAGS: 00000246 ORIG_RAX: 000000000000004a
[   42.920373] localhost kernel: RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1aa19c7d68
[   42.920374] localhost kernel: RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000003
[   42.920376] localhost kernel: RBP: 0000000000000003 R08: 0000000000000200 R09: 00007f1aa1b63660
[   42.920377] localhost kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   42.920378] localhost kernel: R13: 000055a2e9607440 R14: 00007f1aa1b63660 R15: 000055a2e96072d0
[   42.920381] localhost kernel: ---[ end trace 47bfa34d3f9f8227 ]---