On Mon, Mar 03, 2025 at 06:51:59PM -0000, tip-bot2 for Ryo Takakura wrote:
> The following commit has been merged into the locking/core branch of tip:
>
> Commit-ID: 8a9d677a395703ef9075c91dd04066be8a553405
> Gitweb: https://git.kernel.org/tip/8a9d677a395703ef9075c91dd04066be8a553405
> Author: Ryo Takakura <ryotkkr98@xxxxxxxxx>
> AuthorDate: Sat, 18 Jan 2025 14:49:00 +09:00
> Committer: Boqun Feng <boqun.feng@xxxxxxxxx>
> CommitterDate: Sun, 23 Feb 2025 18:24:46 -08:00
>
> lockdep: Fix wait context check on softirq for PREEMPT_RT
>
> Since commit 0c1d7a2c2d32 ("lockdep: Remove softirq accounting on
> PREEMPT_RT."), the wait context test for mutex usage within
> "in softirq context" fails as it references @softirq_context.
>
> [ 0.184549] | wait context tests |
> [ 0.184549] --------------------------------------------------------------------------
> [ 0.184549] | rcu | raw | spin |mutex |
> [ 0.184549] --------------------------------------------------------------------------
> [ 0.184550] in hardirq context: ok | ok | ok | ok |
> [ 0.185083] in hardirq context (not threaded): ok | ok | ok | ok |
> [ 0.185606] in softirq context: ok | ok | ok |FAILED|
>
> As a fix, add lockdep map for BH disabled section. This fixes the
> issue by letting us catch cases when local_bh_disable() gets called
> with preemption disabled where local_lock doesn't get acquired.
> In the case of "in softirq context" selftest, local_bh_disable() was
> being called with preemption disable as it's early in the boot.
>
> Signed-off-by: Ryo Takakura <ryotkkr98@xxxxxxxxx>
> Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx>
> Link: https://lore.kernel.org/r/20250118054900.18639-1-ryotkkr98@xxxxxxxxx
This commit is causing:
[ 7.184373] NET: Registered PF_INET6 protocol family
[ 7.196129] =============================
[ 7.196129] [ BUG: Invalid wait context ]
[ 7.196129] 6.14.0-rc5-00547-g67de62470d82-dirty #629 Not tainted
[ 7.196129] -----------------------------
[ 7.196129] swapper/0/1 is trying to lock:
[ 7.196129] ffffffff83312108 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0x818/0xc20
[ 7.196129] other info that might help us debug this:
[ 7.196129] context-{5:5}
[ 7.238009] ata7.00: ATA-8: ST91000640NS, SN03, max UDMA/133
[ 7.196129] 3 locks held by swapper/0/1:
[ 7.196129] #0: ffffffff834414d0 (pernet_ops_rwsem){+.+.}-{4:4}, at: register_netdevice_notifier+0x1a/0x120
[ 7.196129] #1: ffffffff83442988 (rtnl_mutex){+.+.}-{4:4}, at: register_netdevice_notifier+0x1f/0x120
[ 7.196129] #2: ffffffff8324c740 (local_bh){.+.+}-{1:3}, at: dev_mc_add+0x39/0xb0
[ 7.196129] stack backtrace:
[ 7.196129] CPU: 31 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-rc5-00547-g67de62470d82-dirty #629
[ 7.196129] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
[ 7.196129] Call Trace:
[ 7.196129] <TASK>
[ 7.196129] dump_stack_lvl+0x57/0x80
[ 7.196129] __lock_acquire+0xd72/0x17d0
[ 7.196129] ? ret_from_fork_asm+0x1a/0x30
[ 7.196129] lock_acquire+0xcd/0x2f0
[ 7.196129] ? pcpu_alloc_noprof+0x818/0xc20
[ 7.196129] __mutex_lock+0xa4/0x820
[ 7.196129] ? pcpu_alloc_noprof+0x818/0xc20
[ 7.196129] ? pcpu_alloc_noprof+0x818/0xc20
[ 7.196129] ? lock_acquire+0xcd/0x2f0
[ 7.239989] ? pcpu_alloc_noprof+0x818/0xc20
[ 7.239990] pcpu_alloc_noprof+0x818/0xc20
[ 7.239993] ? lockdep_hardirqs_on+0x74/0x110
[ 7.239996] ? neigh_parms_alloc+0xed/0x160
[ 7.240001] ? neigh_parms_alloc+0xed/0x160
[ 7.240005] ipv6_add_dev+0x154/0x520
[ 7.240005] addrconf_notify+0x2de/0x8b0
[ 7.240005] ? register_netdevice_notifier+0x1f/0x120
[ 7.240005] ? lock_acquire+0xdd/0x2f0
[ 7.240005] call_netdevice_register_net_notifiers+0x5b/0x100
[ 7.240005] register_netdevice_notifier+0x87/0x120
[ 7.240005] addrconf_init+0xa5/0x150
[ 7.240005] inet6_init+0x1f3/0x3b0
[ 7.240005] ? __pfx_inet6_init+0x10/0x10
[ 7.240005] do_one_initcall+0x53/0x2b0
[ 7.240005] ? rcu_is_watching+0xd/0x40
[ 7.240005] kernel_init_freeable+0x23f/0x280
[ 7.240005] ? __pfx_kernel_init+0x10/0x10
[ 7.240005] kernel_init+0x16/0x130
[ 7.240005] ret_from_fork+0x2d/0x50
[ 7.240005] ? __pfx_kernel_init+0x10/0x10
[ 7.240005] ret_from_fork_asm+0x1a/0x30
[ 7.240005] </TASK>
And some other weirdness for bpetkov:
https://lkml.kernel.org/r/20250306122413.GBZ8mT7Z61Tmgnh5Y9@fat_crate.local
I suspect you missed a release somewhere.
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