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Fri, 21 Aug 2026 09:57:34 -0700 (PDT) Date: Fri, 21 Aug 2026 09:57:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a88837e.ae6ddae5.3da009.0040.GAE@google.com> Subject: [syzbot] [mm?] BUG: sleeping function called from invalid context in bucket_table_alloc From: syzbot To: akpm@linux-foundation.org, apopple@nvidia.com, byungchul@sk.com, david@kernel.org, gourry@gourry.net, joshua.hahnjy@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, syzkaller-bugs@googlegroups.com, ying.huang@linux.alibaba.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: jk33j15mb9cudh7xyf6rk8g95zyx5org X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: C46A0C0006 X-HE-Tag: 1787331455-556035 X-HE-Meta: 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 g98PIf38 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 6+V1cFPH 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 7079a12d7506 Add linux-next specific files for 20260820 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=119afa25580000 kernel config: https://syzkaller.appspot.com/x/.config?x=aa9dec010c9e69a7 dashboard link: https://syzkaller.appspot.com/bug?extid=0dbf6d295b3350944f0b compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9682e92d9ec7/disk-7079a12d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/829f3c29b6e1/vmlinux-7079a12d.xz kernel image: https://storage.googleapis.com/syzbot-assets/2e0cdd08b0f5/bzImage-7079a12d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0dbf6d295b3350944f0b@syzkaller.appspotmail.com BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 15133, name: syz.6.1501 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 locks held by syz.6.1501/15133: 2, last CPU#1: #0: ffffffff90250500 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff90250500 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00 net/core/rtnetlink.c:7138 #1: ffffffff8ed5ca60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffffff8ed5ca60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8ed5ca60 (rcu_read_lock){....}-{1:3}, at: rhashtable_insert_slow+0x1cf/0x2000 lib/rhashtable.c:683 CPU: 1 UID: 0 PID: 15133 Comm: syz.6.1501 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x36a/0x4c0 kernel/sched/core.c:9236 might_alloc include/linux/sched/mm.h:322 [inline] slab_pre_alloc_hook mm/slub.c:4636 [inline] slab_alloc_node mm/slub.c:4974 [inline] __do_kmalloc_node mm/slub.c:5413 [inline] __kmalloc_noprof+0xef/0x720 mm/slub.c:5439 _kmalloc_noprof include/linux/slab.h:995 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] alloc_pages_bulk_weighted_interleave mm/mempolicy.c:2682 [inline] alloc_pages_bulk_mempolicy_noprof+0xaef/0x1690 mm/mempolicy.c:2785 vm_area_alloc_pages mm/vmalloc.c:3736 [inline] __vmalloc_area_node mm/vmalloc.c:3914 [inline] __vmalloc_node_range_noprof+0xa0a/0x1540 mm/vmalloc.c:4104 __vmalloc_node_noprof mm/vmalloc.c:4165 [inline] __vmalloc_area_node mm/vmalloc.c:3890 [inline] __vmalloc_node_range_noprof+0x58b/0x1540 mm/vmalloc.c:4104 __kvmalloc_node_noprof+0x5a1/0x820 mm/slub.c:7033 bucket_table_alloc+0x75/0x380 lib/rhashtable.c:197 rhashtable_insert_rehash lib/rhashtable.c:503 [inline] rhashtable_try_insert lib/rhashtable.c:671 [inline] rhashtable_insert_slow+0x1c66/0x2000 lib/rhashtable.c:684 __rhashtable_insert_fast include/linux/rhashtable.h:789 [inline] rhashtable_lookup_insert_fast include/linux/rhashtable.h:966 [inline] vxlan_vni_add drivers/net/vxlan/vxlan_vnifilter.c:744 [inline] vxlan_vni_add_del drivers/net/vxlan/vxlan_vnifilter.c:824 [inline] vxlan_process_vni_filter drivers/net/vxlan/vxlan_vnifilter.c:891 [inline] vxlan_vnifilter_process+0x357a/0x4d40 drivers/net/vxlan/vxlan_vnifilter.c:973 rtnetlink_rcv_msg+0x7b9/0xc00 net/core/rtnetlink.c:7141 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2713 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767 __sys_sendmsg net/socket.c:2799 [inline] __do_sys_sendmsg net/socket.c:2804 [inline] __se_sys_sendmsg net/socket.c:2802 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup