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Wed, 23 Sep 2026 01:12:40 +1000 (AEST) Date: Tue, 22 Sep 2026 17:06:19 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1790089580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type; bh=TiXadWFU7B6ab0WDVPsln/3CMRKya/0OF/8XBOyxvag=; b=BUv+n5BIGntoaDwlCwSy5DewyYsABxbxgMYdHr9l38nsUh3I0x3MZAGZG1T0eibzQssdog S9Owvu5A24GlFew5NWD7nZc+zTVduImD1sgwJYnBp/50DRXwaOY85dvNGsis+XMUp1QYnD x6zqSPJ7Lv/vEYXCngDu7mF2KPcKmaEbDbxVdceiEInCMRh5Mq3H/D+RBJ/ilBmY+C33u2 ojmdRoLbG78vIq/W/heNFeSYnDlGshFttrNwyiTDWj9Q0wIxTu5fT7GeoPZemr57fGu20J BoIGcimgwzmT9DUQAKzWihYMi+CINlV3TDspOWK8D90rbfVFhxZWb01W9wlmiA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1790089580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type; bh=TiXadWFU7B6ab0WDVPsln/3CMRKya/0OF/8XBOyxvag=; b=W6F+Plm723Su8gjO51/xnwXokhcs4amdMxwVFVLFgNbJtKMvyY99wqgc8MZbywgSPsTk4d WK8+l1W8NX2vM+DA== From: Sebastian Andrzej Siewior To: linuxppc-dev@lists.ozlabs.org Cc: Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Ritesh Harjani , Shrikanth Hegde Subject: 7.3.0-rc4: DEBUG_LOCKS_WARN_ON(lockdep_hardirq_context()) Message-ID: <20260922150619.lwWqj1AO@linutronix.de> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Hi, I've seen similar reports such as https://lore.kernel.org/all/b44aefc5-e066-478b-8d34-50d2d0deab6b@linux.ibm.com/ but nothing on recent one. I am not sure if this is the same issue or something different. This happens during boot: | ------------[ cut here ]------------ | DEBUG_LOCKS_WARN_ON(lockdep_hardirq_context()) | WARNING: kernel/locking/lockdep.c:4448 at lockdep_hardirqs_on_prepare+0x22c/0x2e0, CPU#0: swapper/0/0 | Modules linked in: | CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 7.3.0-rc4 #6 PREEMPT(lazy) | Hardware name: IBM pSeries (emulated by qemu) Power11 (architected) 0x821200 0xf000007 of:SLOF,HEAD pSeries | NIP: c0000000001ec72c LR: c0000000001ec728 CTR: c000000000e1ab70 | REGS: c0000000017531e0 TRAP: 0700 Not tainted (7.3.0-rc4) | MSR: 8000000002021033 CR: 48028228 XER: 00000000 | CFAR: c00000000011ee84 IRQMASK: 3 | GPR00: c0000000001ec728 c000000001753480 c000000001248000 000000000000002e | GPR04: c0000000015ee8d8 c0000000015ee9c8 0000000000000001 0000000000000080 | GPR08: c0000000015ee7b8 0000000001000003 c000000001581400 0000000048028228 | GPR12: c000000001788228 c000000002340000 c0000000005bbd50 c000000000ea30f0 | GPR16: c0000000016cec98 c0000000011a1518 c000000003327658 0000000000000001 | GPR20: c0000000016c9620 c0000000015e3c80 c0000000016c9670 0000000000000000 | GPR24: 0000000000000000 0000000000000001 0000000000000000 c000000001788228 | GPR28: c000000001380580 c000000000027644 0000000000000000 c000000001387160 | NIP [c0000000001ec72c] lockdep_hardirqs_on_prepare+0x22c/0x2e0 | LR [c0000000001ec728] lockdep_hardirqs_on_prepare+0x228/0x2e0 | Call Trace: | [c000000001753480] [c0000000001ec728] lockdep_hardirqs_on_prepare+0x228/0x2e0 (unreliable) | [c000000001753500] [c000000000331c90] trace_hardirqs_on+0x90/0x130 | [c000000001753540] [c000000000e257f4] irqentry_exit+0x554/0x10b0 | [c000000001753600] [c000000000027644] timer_interrupt+0x254/0x5c0 | [c0000000017536c0] [c00000000003a2c0] __replay_soft_interrupts+0x140/0x390 | [c000000001753880] [c00000000003a614] arch_local_irq_restore+0x104/0x1f0 | [c0000000017538b0] [c0000000001eed9c] lock_acquire+0x19c/0x440 | [c0000000017539b0] [c000000000541024] __kmalloc_cache_noprof+0x114/0x630 | [c000000001753a90] [c0000000004970c8] shrinker_alloc+0x38/0xe0 | [c000000001753ac0] [c0000000005bf374] sget_fc+0x364/0x940 | [c000000001753c00] [c0000000005bfd78] get_tree_nodev+0x38/0xf0 | [c000000001753c40] [c000000000649060] nullfs_fs_get_tree+0x20/0x40 | [c000000001753c60] [c0000000005ba01c] vfs_get_tree+0x3c/0x110 | [c000000001753ce0] [c0000000006043a0] fc_mount+0x20/0xc0 | [c000000001753d20] [c000000000604544] vfs_kern_mount.part.0+0x104/0x120 | [c000000001753d80] [c0000000006045bc] kern_mount+0x2c/0x60 | [c000000001753da0] [c000000001296f20] mnt_init+0x3c8/0x50c | [c000000001753e80] [c000000001296610] vfs_caches_init+0x100/0x144 | [c000000001753f30] [c00000000125442c] start_kernel+0xa4c/0xabc | [c000000001753fe0] [c00000000000d688] start_here_common+0x1c/0x20 | Code: 4182ff80 3d220054 3929106c 81290000 2c090000 4082ff6c 3c82ffe7 3c62ffe7 38846858 3863dfd8 4bf32645 60000000 <0fe00000> 4bffff4c 60000000 60000000 | irq event stamp: 472 | hardirqs last enabled at (471): [] _raw_spin_unlock_irqrestore+0xa4/0xb0 | hardirqs last disabled at (472): [] arch_local_irq_restore+0xa8/0x1f0 | softirqs last enabled at (10): [] handle_softirqs+0x670/0x6d0 | softirqs last disabled at (3): [] do_softirq_own_stack+0x38/0x50 | ---[ end trace 0000000000000000 ]--- Sebastian