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AJvYcCVWNTXjcjWSErwuYq00w3JVAiMqAzRF0z+LEcZgiigz+US/BiOxR8wUkhQ8nDda5Yn0vXbUuS5VMg==@kvack.org X-Gm-Message-State: AOJu0YwCyBsg3/Z117eemVl4gBLhYtnZfTsVzD2IMZAWDbIEFPZQdNws i/Vrk1csGag4wt/vsBNrh6izkrInCzkO8IKiAWYcTppFmijnqinvP0wg9wq5JbZwk2Yz2LXSd1R nOph9H8rRY4dTWJCMpTXMrEoLSq3Jvc+cwiflCMqJFDIBLqMCwWlfY60dCoE= MIME-Version: 1.0 X-Received: by 2002:a05:6820:4887:b0:66b:6862:18d5 with SMTP id 006d021491bc7-67c0da588ddmr1007794eaf.8.1773810121701; Tue, 17 Mar 2026 22:02:01 -0700 (PDT) Date: Tue, 17 Mar 2026 22:02:01 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69ba31c9.050a0220.3077e3.0002.GAE@google.com> Subject: Re: [syzbot] [mm?] [f2fs?] [exfat?] memory leak in __kfree_rcu_sheaf From: syzbot To: akpm@linux-foundation.org, catalin.marinas@arm.com, chao@kernel.org, hao.li@linux.dev, harry.yoo@oracle.com, jaegeuk@kernel.org, jannh@google.com, liam.howlett@oracle.com, linkinjeon@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, pfalcato@suse.de, sj1557.seo@samsung.com, syzkaller-bugs@googlegroups.com, vbabka@kernel.org, vbabka@suse.cz, wangqing7171@gmail.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: B4DC1A0013 X-Stat-Signature: x5g8e68y39g7sh6ustjfskpos1e36ow1 X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1773810122-29976 X-HE-Meta: U2FsdGVkX18m9FbN6IkVxjGv1ATjuroow9tlsUVTp/1TdRwcwpSP1mCSShh7W91W9EZmavKRGT0XGn/zw89ceclIF2KCeO/cogZpP72OGtb95IQh6hfqG1rkz6LMEfB9PnkD0+3vWCkHBjesMWVa3XFEWpGAWdQpvsrOEWVmnEdo2F/u2PRbbw9srXocvwmaZ3o/2gy/tEocW6CGGBg6l65pw+oUTD5Q+ZTFNo+GQBMHRFiJHRFk6Pkn7hmPZmAExt0/vp7Vq91UxHxXvTxyqMeVp72WJCfAzib7yxJGBTKjLh4vGKqITh0qpMXRbJ1Bdn/yWoa7MdK7iNJJGixSyhCe9igbf5RzjXA9C15arC+byhcok/n7ZSNDHUqIQzuIswTsTp8i+BOh+HcO+hFb0CTLpLtE06DWzW101A7QBak4DjwtAZswHeUDxmVFhdtv07lSAAMjoUG6YdBTw0HmSzqpgz7JSjrBR8/cFbOrRgEEogzWRORAUZ6GQjo4So6OH9I5JjBo3o5eE/wZPokoKegOqQZXc6VV+uBWre6bkAP/7nkjV1MGd1KBwOjkgy60+w8gMplneQh+rM4N3E1espEFFqDoPL4vejvPUWCd+UlkoPkrKwUZu3/u7+e+BOyWBQdnIKFhl7GhASTgHJbGAE+qghvwdjDIcDbx7MQvUuBVsyv33E0Ve9vhgU+jEDIUF41DjMNZYDIxeMsd3eYiT4ZMLlo12pHn746QBYiMZ87utuNczp3s9xZc7Dv4gV+oLJk8j1NlJCRyTeSvlX9rH6abP6zj9RIwxPAuJzv6NKJryA7qdQCJzyowEpDq51g6R+oxYCPDYP321y5XcViPESmSGOygp/iqnjmTlt6jH9cDvcHCE5il8Nd+07WoBkasLK7pnaIVJy5vfkVE407CaGOEh9NmYDevm816pf1Tvqbsy9jPk5QCYOAtjaqp9RAjgsPOjPKHmLzCiErsKHg OI0NiRlu 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 BVIK9X1J ndK6EW67l7lw+knxV8UsjHGJJ0W+J7qqr3H08CXY/OpPHL5SmtAU7w== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in __pcs_replace_empty_main BUG: memory leak unreferenced object 0xffff888129413800 (size 512): comm "kworker/u8:3", pid 58, jiffies 4294947638 hex dump (first 32 bytes): 00 ac 98 1c 81 88 ff ff 00 18 6b 0a 81 88 ff ff ..........k..... 00 12 04 00 81 88 ff ff 3c 00 00 00 00 00 00 00 ........<....... backtrace (crc 10da2a4f): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4543 [inline] slab_alloc_node mm/slub.c:4866 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] __alloc_empty_sheaf+0x35/0x50 mm/slub.c:2764 alloc_empty_sheaf mm/slub.c:2779 [inline] alloc_full_sheaf mm/slub.c:2829 [inline] __pcs_replace_empty_main+0x1e0/0x2f0 mm/slub.c:4626 alloc_from_pcs mm/slub.c:4717 [inline] slab_alloc_node mm/slub.c:4851 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x4c5/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] cfg80211_inform_single_bss_data+0x21d/0xa70 net/wireless/scan.c:2344 cfg80211_inform_bss_data+0x13f/0x1dc0 net/wireless/scan.c:3226 cfg80211_inform_bss_frame_data+0x108/0x340 net/wireless/scan.c:3317 ieee80211_bss_info_update+0x13a/0x320 net/mac80211/scan.c:230 ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline] ieee80211_ibss_rx_queued_mgmt+0xb75/0x1230 net/mac80211/ibss.c:1602 ieee80211_iface_process_skb net/mac80211/iface.c:1748 [inline] ieee80211_iface_work+0x6af/0x9b0 net/mac80211/iface.c:1802 cfg80211_wiphy_work+0x1db/0x280 net/wireless/core.c:440 process_one_work+0x277/0x5f0 kernel/workqueue.c:3276 process_scheduled_works kernel/workqueue.c:3359 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3440 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff88812a621a00 (size 512): comm "kworker/u8:3", pid 58, jiffies 4294950606 hex dump (first 32 bytes): 00 18 62 2a 81 88 ff ff 00 d6 04 00 81 88 ff ff ..b*............ 00 12 04 00 81 88 ff ff 3c 00 00 00 00 00 00 00 ........<....... backtrace (crc 231cde90): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4543 [inline] slab_alloc_node mm/slub.c:4866 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] __alloc_empty_sheaf+0x35/0x50 mm/slub.c:2764 alloc_empty_sheaf mm/slub.c:2779 [inline] alloc_full_sheaf mm/slub.c:2829 [inline] __pcs_replace_empty_main+0x1e0/0x2f0 mm/slub.c:4626 alloc_from_pcs mm/slub.c:4717 [inline] slab_alloc_node mm/slub.c:4851 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x4c5/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] cfg80211_inform_single_bss_data+0x21d/0xa70 net/wireless/scan.c:2344 cfg80211_inform_bss_data+0x13f/0x1dc0 net/wireless/scan.c:3226 cfg80211_inform_bss_frame_data+0x108/0x340 net/wireless/scan.c:3317 ieee80211_bss_info_update+0x13a/0x320 net/mac80211/scan.c:230 ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline] ieee80211_ibss_rx_queued_mgmt+0xb75/0x1230 net/mac80211/ibss.c:1602 ieee80211_iface_process_skb net/mac80211/iface.c:1748 [inline] ieee80211_iface_work+0x6af/0x9b0 net/mac80211/iface.c:1802 cfg80211_wiphy_work+0x1db/0x280 net/wireless/core.c:440 process_one_work+0x277/0x5f0 kernel/workqueue.c:3276 process_scheduled_works kernel/workqueue.c:3359 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3440 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff88812a621800 (size 512): comm "kworker/u8:6", pid 932, jiffies 4294950638 hex dump (first 32 bytes): 00 18 6b 0a 81 88 ff ff 00 1a 62 2a 81 88 ff ff ..k.......b*.... 00 12 04 00 81 88 ff ff 3c 00 00 00 00 00 00 00 ........<....... backtrace (crc 9a0f4a55): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4543 [inline] slab_alloc_node mm/slub.c:4866 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] __alloc_empty_sheaf+0x35/0x50 mm/slub.c:2764 alloc_empty_sheaf mm/slub.c:2779 [inline] alloc_full_sheaf mm/slub.c:2829 [inline] __pcs_replace_empty_main+0x1e0/0x2f0 mm/slub.c:4626 alloc_from_pcs mm/slub.c:4717 [inline] slab_alloc_node mm/slub.c:4851 [inline] __do_kmalloc_node mm/slub.c:5259 [inline] __kmalloc_noprof+0x4c5/0x560 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] cfg80211_inform_single_bss_data+0x21d/0xa70 net/wireless/scan.c:2344 cfg80211_inform_bss_data+0x13f/0x1dc0 net/wireless/scan.c:3226 cfg80211_inform_bss_frame_data+0x108/0x340 net/wireless/scan.c:3317 ieee80211_bss_info_update+0x13a/0x320 net/mac80211/scan.c:230 ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline] ieee80211_ibss_rx_queued_mgmt+0xb75/0x1230 net/mac80211/ibss.c:1602 ieee80211_iface_process_skb net/mac80211/iface.c:1748 [inline] ieee80211_iface_work+0x6af/0x9b0 net/mac80211/iface.c:1802 cfg80211_wiphy_work+0x1db/0x280 net/wireless/core.c:440 process_one_work+0x277/0x5f0 kernel/workqueue.c:3276 process_scheduled_works kernel/workqueue.c:3359 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3440 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x23c/0x4b0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF Tested on: commit: a989fde7 Merge tag 'libnvdimm-fixes-7.0-rc5' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15c4974a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e2bba615ee79faa5 dashboard link: https://syzkaller.appspot.com/bug?extid=cae7809e9dc1459e4e63 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=178fc216580000