From: Kalle Valo <kvalo@kernel.org> To: Ross Lagerwall <ross.lagerwall@citrix.com>, Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ath11k@lists.infradead.org, regressions@lists.linux.dev Subject: [regression v6.5-rc1] PCI: comm "swapper/0" leaking memory Date: Wed, 30 Aug 2023 12:21:34 +0300 [thread overview] Message-ID: <878r9sga1t.fsf@kernel.org> (raw) Hi, I noticed that starting from v6.5-rc1 my ath11k tests reported several memory leaks from swapper/0: unreferenced object 0xffff88810a02b7a8 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 80 b8 02 0a 81 88 ff ff b8 72 07 00 00 c9 ff ff .........r...... c8 b7 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: unreferenced object 0xffff88810a02b880 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 58 b9 02 0a 81 88 ff ff a8 b7 02 0a 81 88 ff ff X............... a0 b8 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: unreferenced object 0xffff88810a02b958 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 30 ba 02 0a 81 88 ff ff 80 b8 02 0a 81 88 ff ff 0............... 78 b9 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 x............... backtrace: unreferenced object 0xffff88810a02ba30 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 08 bb 02 0a 81 88 ff ff 58 b9 02 0a 81 88 ff ff ........X....... 50 ba 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 P............... backtrace: unreferenced object 0xffff88810a02bb08 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): e0 bb 02 0a 81 88 ff ff 30 ba 02 0a 81 88 ff ff ........0....... 28 bb 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 (............... backtrace: I can easily reproduce this by doing a simple insmod and rmmod of ath11k and it's dependencies (mac80211, MHI etc). I can reliability reproduce the leaks but I only see them once after a boot, I need to reboot the host to see the leaks again. v6.4 has no leaks. I did a bisect and found the commit below. I verified reverting the commit makes the leaks go away. commit e54223275ba1bc6f704a6bab015fcd2ae4f72572 Author: Ross Lagerwall <ross.lagerwall@citrix.com> AuthorDate: Thu May 25 16:32:48 2023 +0100 Commit: Bjorn Helgaas <bhelgaas@google.com> CommitDate: Fri Jun 9 15:06:16 2023 -0500 PCI: Release resource invalidated by coalescing Kalle -- ath11k mailing list ath11k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath11k
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From: Kalle Valo <kvalo@kernel.org> To: Ross Lagerwall <ross.lagerwall@citrix.com>, Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ath11k@lists.infradead.org, regressions@lists.linux.dev Subject: [regression v6.5-rc1] PCI: comm "swapper/0" leaking memory Date: Wed, 30 Aug 2023 12:21:34 +0300 [thread overview] Message-ID: <878r9sga1t.fsf@kernel.org> (raw) Hi, I noticed that starting from v6.5-rc1 my ath11k tests reported several memory leaks from swapper/0: unreferenced object 0xffff88810a02b7a8 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 80 b8 02 0a 81 88 ff ff b8 72 07 00 00 c9 ff ff .........r...... c8 b7 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: unreferenced object 0xffff88810a02b880 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 58 b9 02 0a 81 88 ff ff a8 b7 02 0a 81 88 ff ff X............... a0 b8 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: unreferenced object 0xffff88810a02b958 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 30 ba 02 0a 81 88 ff ff 80 b8 02 0a 81 88 ff ff 0............... 78 b9 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 x............... backtrace: unreferenced object 0xffff88810a02ba30 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): 08 bb 02 0a 81 88 ff ff 58 b9 02 0a 81 88 ff ff ........X....... 50 ba 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 P............... backtrace: unreferenced object 0xffff88810a02bb08 (size 96): comm "swapper/0", pid 1, jiffies 4294671838 (age 98.120s) hex dump (first 32 bytes): e0 bb 02 0a 81 88 ff ff 30 ba 02 0a 81 88 ff ff ........0....... 28 bb 02 0a 81 88 ff ff 00 00 00 00 00 00 00 00 (............... backtrace: I can easily reproduce this by doing a simple insmod and rmmod of ath11k and it's dependencies (mac80211, MHI etc). I can reliability reproduce the leaks but I only see them once after a boot, I need to reboot the host to see the leaks again. v6.4 has no leaks. I did a bisect and found the commit below. I verified reverting the commit makes the leaks go away. commit e54223275ba1bc6f704a6bab015fcd2ae4f72572 Author: Ross Lagerwall <ross.lagerwall@citrix.com> AuthorDate: Thu May 25 16:32:48 2023 +0100 Commit: Bjorn Helgaas <bhelgaas@google.com> CommitDate: Fri Jun 9 15:06:16 2023 -0500 PCI: Release resource invalidated by coalescing Kalle
next reply other threads:[~2023-08-30 9:21 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-08-30 9:21 Kalle Valo [this message] 2023-08-30 9:21 ` [regression v6.5-rc1] PCI: comm "swapper/0" leaking memory Kalle Valo 2023-08-30 9:55 ` Linux regression tracking (Thorsten Leemhuis) 2023-08-30 9:55 ` Linux regression tracking (Thorsten Leemhuis) 2023-08-30 11:31 ` Kalle Valo 2023-08-30 11:31 ` Kalle Valo 2023-09-05 16:28 ` Ross Lagerwall 2023-09-05 16:28 ` Ross Lagerwall 2023-09-06 8:40 ` Kalle Valo 2023-09-06 8:40 ` Kalle Valo 2023-09-06 11:03 ` Ross Lagerwall 2023-09-06 11:03 ` Ross Lagerwall
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