Skip to content

usb: dwc2: hcd: add missing ifdeffery for hsotg->test_mode#25

Closed
thom24 wants to merge 1 commit into
STMicroelectronics:v6.1-stm32mpfrom
thom24:v6.1-stm32mp-dwc2-fix-compile-issue-host-mode
Closed

usb: dwc2: hcd: add missing ifdeffery for hsotg->test_mode#25
thom24 wants to merge 1 commit into
STMicroelectronics:v6.1-stm32mpfrom
thom24:v6.1-stm32mp-dwc2-fix-compile-issue-host-mode

Conversation

@thom24

@thom24 thom24 commented Jun 7, 2024

Copy link
Copy Markdown

In the struct dwc2_hsotg, the test_mode member is only present in gadget or dual role mode.

Add a ifdeffery to fix a compile issue if the driver is built in host mode only.

Fixes: da4d738 ("usb: dwc2: hcd: initialize hsotg->test_mode upon USB_PORT_FEAT_TEST")

In the struct dwc2_hsotg, the test_mode member is only present in gadget or
dual role mode.

Add a ifdeffery to fix a compile issue if the driver is built in
host mode only.

Fixes: da4d738 ("usb: dwc2: hcd: initialize hsotg->test_mode upon USB_PORT_FEAT_TEST")
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
@ST-dot-com

Copy link
Copy Markdown

This pull request has been refused, the Contribution License Agreement must be signed.

@ST-dot-com ST-dot-com closed this Jun 7, 2024
@thom24 thom24 deleted the v6.1-stm32mp-dwc2-fix-compile-issue-host-mode branch January 21, 2025 17:12
ADESTM pushed a commit that referenced this pull request Jun 10, 2026
[ Upstream commit 3a1f426 ]

When the incompat flag EXTENT_TREE_V2 is set, we unconditionally add the
block group tree to the switch_commits list before calling
switch_commit_roots, as we do for the tree root and the chunk root.
However, the block group tree uses normal root dirty tracking and in any
transaction that does an allocation and dirties a block group, the block
group root will already be linked to a list by the dirty_list field and
this use of list_add_tail() is invalid and corrupts the prev/next
members of block_group_root->dirty_list.

This is apparent on a subsequent list_del on the prev if we enable
CONFIG_DEBUG_LIST:

  [32.1571] ------------[ cut here ]------------
  [32.1572] list_del corruption. next->prev should beffff958890202538, but was ffff9588992bd538. (next=ffff958890201538)
  [32.1575] WARNING: lib/list_debug.c:65 at 0x0, CPU#3: sync/607
  [32.1583] CPU: 3 UID: 0 PID: 607 Comm: sync Not tainted 6.18.0 #24PREEMPT(none)
  [32.1585] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS1.17.0-4.fc41 04/01/2014
  [32.1587] RIP: 0010:__list_del_entry_valid_or_report+0x108/0x120
  [32.1593] RSP: 0018:ffffaa288287fdd0 EFLAGS: 00010202
  [32.1594] RAX: 0000000000000001 RBX: ffff95889326e800 RCX:ffff958890201538
  [32.1596] RDX: ffff9588992bd538 RSI: ffff958890202538 RDI:ffffffff82a41e00
  [32.1597] RBP: ffff958890202538 R08: ffffffff828fc1e8 R09:00000000ffffefff
  [32.1599] R10: ffffffff8288c200 R11: ffffffff828e4200 R12:ffff958890201538
  [32.1601] R13: ffff95889326e958 R14: ffff958895c24000 R15:ffff958890202538
  [32.1603] FS:  00007f0c28eb5740(0000) GS:ffff958af2bd2000(0000)knlGS:0000000000000000
  [32.1605] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [32.1607] CR2: 00007f0c28e8a3cc CR3: 0000000109942005 CR4:0000000000370ef0
  [32.1609] Call Trace:
  [32.1610]  <TASK>
  [32.1611]  switch_commit_roots+0x82/0x1d0 [btrfs]
  [32.1615]  btrfs_commit_transaction+0x968/0x1550 [btrfs]
  [32.1618]  ? btrfs_attach_transaction_barrier+0x23/0x60 [btrfs]
  [32.1621]  __iterate_supers+0xe8/0x190
  [32.1622]  ? __pfx_sync_fs_one_sb+0x10/0x10
  [32.1623]  ksys_sync+0x63/0xb0
  [32.1624]  __do_sys_sync+0xe/0x20
  [32.1625]  do_syscall_64+0x73/0x450
  [32.1626]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
  [32.1627] RIP: 0033:0x7f0c28d05d2b
  [32.1632] RSP: 002b:00007ffc9d988048 EFLAGS: 00000246 ORIG_RAX:00000000000000a2
  [32.1634] RAX: ffffffffffffffda RBX: 00007ffc9d988228 RCX:00007f0c28d05d2b
  [32.1636] RDX: 00007f0c28e02301 RSI: 00007ffc9d989b21 RDI:00007f0c28dba90d
  [32.1637] RBP: 0000000000000001 R08: 0000000000000001 R09:0000000000000000
  [32.1639] R10: 0000000000000000 R11: 0000000000000246 R12:000055b96572cb80
  [32.1641] R13: 000055b96572b19f R14: 00007f0c28dfa434 R15:000055b96572b034
  [32.1643]  </TASK>
  [32.1644] irq event stamp: 0
  [32.1644] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
  [32.1646] hardirqs last disabled at (0): [<ffffffff81298817>]copy_process+0xb37/0x2260
  [32.1648] softirqs last  enabled at (0): [<ffffffff81298817>]copy_process+0xb37/0x2260
  [32.1650] softirqs last disabled at (0): [<0000000000000000>] 0x0
  [32.1652] ---[ end trace 0000000000000000 ]---

Furthermore, this list corruption eventually (when we happen to add a
new block group) results in getting the switch_commits and
dirty_cowonly_roots lists mixed up and attempting to call update_root
on the tree root which can't be found in the tree root, resulting in a
transaction abort:

  [87.8269] BTRFS critical (device nvme1n1): unable to find root key (1 0 0) in tree 1
  [87.8272] ------------[ cut here ]------------
  [87.8274] BTRFS: Transaction aborted (error -117)
  [87.8275] WARNING: fs/btrfs/root-tree.c:153 at 0x0, CPU#4: sync/703
  [87.8285] CPU: 4 UID: 0 PID: 703 Comm: sync Not tainted 6.18.0 #25 PREEMPT(none)
  [87.8287] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-4.fc41 04/01/2014
  [87.8289] RIP: 0010:btrfs_update_root+0x296/0x790 [btrfs]
  [87.8295] RSP: 0018:ffffa58d035dfd60 EFLAGS: 00010282
  [87.8297] RAX: ffff9a59126ddb68 RBX: ffff9a59126dc000 RCX: 0000000000000000
  [87.8299] RDX: 0000000000000000 RSI: 00000000ffffff8b RDI: ffffffffc0b28270
  [87.8301] RBP: ffff9a5904aec000 R08: 0000000000000000 R09: 00000000ffffefff
  [87.8303] R10: ffffffff9ac8c200 R11: ffffffff9ace4200 R12: 0000000000000001
  [87.8305] R13: ffff9a59041740e8 R14: ffff9a5904aec1f7 R15: ffff9a590fdefaf0
  [87.8307] FS:  00007f54cde6b740(0000) GS:ffff9a5b5a81c000(0000) knlGS:0000000000000000
  [87.8309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [87.8310] CR2: 00007f54cde403cc CR3: 0000000112902004 CR4: 0000000000370ef0
  [87.8312] Call Trace:
  [87.8313]  <TASK>
  [87.8314]  ? _raw_spin_unlock+0x23/0x40
  [87.8315]  commit_cowonly_roots+0x1ad/0x250 [btrfs]
  [87.8317]  ? btrfs_commit_transaction+0x79b/0x1560 [btrfs]
  [87.8320]  btrfs_commit_transaction+0x8aa/0x1560 [btrfs]
  [87.8322]  ? btrfs_attach_transaction_barrier+0x23/0x60 [btrfs]
  [87.8325]  __iterate_supers+0xf1/0x170
  [87.8326]  ? __pfx_sync_fs_one_sb+0x10/0x10
  [87.8327]  ksys_sync+0x63/0xb0
  [87.8328]  __do_sys_sync+0xe/0x20
  [87.8329]  do_syscall_64+0x73/0x450
  [87.8330]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
  [87.8331] RIP: 0033:0x7f54cdd05d2b
  [87.8336] RSP: 002b:00007fff1b58ff78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
  [87.8338] RAX: ffffffffffffffda RBX: 00007fff1b590158 RCX: 00007f54cdd05d2b
  [87.8340] RDX: 00007f54cde02301 RSI: 00007fff1b592b66 RDI: 00007f54cddba90d
  [87.8342] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
  [87.8344] R10: 0000000000000000 R11: 0000000000000246 R12: 000055e07ca96b80
  [87.8346] R13: 000055e07ca9519f R14: 00007f54cddfa434 R15: 000055e07ca95034
  [87.8348]  </TASK>
  [87.8348] irq event stamp: 0
  [87.8349] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
  [87.8351] hardirqs last disabled at (0): [<ffffffff99698797>] copy_process+0xb37/0x21e0
  [87.8353] softirqs last  enabled at (0): [<ffffffff99698797>] copy_process+0xb37/0x21e0
  [87.8355] softirqs last disabled at (0): [<0000000000000000>] 0x0
  [87.8357] ---[ end trace 0000000000000000 ]---
  [87.8358] BTRFS: error (device nvme1n1 state A) in btrfs_update_root:153: errno=-117 Filesystem corrupted
  [87.8360] BTRFS info (device nvme1n1 state EA): forced readonly
  [87.8362] BTRFS warning (device nvme1n1 state EA): Skipping commit of aborted transaction.
  [87.8364] BTRFS: error (device nvme1n1 state EA) in cleanup_transaction:2037: errno=-117 Filesystem corrupted

Since the block group tree was pulled out of the extent tree and uses
normal root dirty tracking, remove the offending extra list_add. This
fixes the list corruption and the resulting fs corruption.

Fixes: 14033b0 ("btrfs: don't save block group root into super block")
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants