bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves Unable to handle kernel paging request at virtual address dfff800000000000 KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 [dfff800000000000] address between user and kernel address ranges Internal error: Oops: 96000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 21345 Comm: kworker/u4:5 Not tainted 5.19.0-rc1-syzkaller-00011-g9886142c7a22 #0 Hardware name: linux,dummy-virt (DT) Workqueue: netns cleanup_net pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid+0x78/0x16c lib/list_debug.c:51 lr : __list_del_entry include/linux/list.h:134 [inline] lr : list_del include/linux/list.h:148 [inline] lr : cttimeout_net_exit+0x168/0x3bc net/netfilter/nfnetlink_cttimeout.c:618 sp : ffff800011ba79f0 x29: ffff800011ba79f0 x28: 1fffe00002e53b64 x27: ffff00001729db28 x26: ffff00001729db20 x25: dfff800000000000 x24: dead000000000100 x23: dead000000000122 x22: ffff000031632910 x21: 0000000000000000 x20: 0000000000000000 x19: ffff00001729db20 x18: ffff00006a8bfbbc x17: 0000000000000000 x16: 0000000000000000 x15: 1fffe0000d517f78 x14: 1ffff00002374ef4 x13: 0000000000000000 x12: ffff60000286c781 x11: 1fffe0000286c780 x10: ffff60000286c780 x9 : dfff800000000000 x8 : ffff000014363c03 x7 : 0000000000000001 x6 : 00009ffffd793880 x5 : ffff000014363c00 x4 : ffff60000286c781 x3 : ffff80000bdad710 x2 : 1fffe00002e53b65 x1 : 0000000000000000 x0 : dfff800000000000 Call trace: __list_del_entry_valid+0x78/0x16c lib/list_debug.c:51 __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] cttimeout_net_exit+0x168/0x3bc net/netfilter/nfnetlink_cttimeout.c:618 ops_exit_list+0x80/0x140 net/core/net_namespace.c:162 cleanup_net+0x3a4/0x810 net/core/net_namespace.c:594 process_one_work+0x74c/0x16e0 kernel/workqueue.c:2289 worker_thread+0x3cc/0xc40 kernel/workqueue.c:2436 kthread+0x234/0x2a0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:867 Code: 54000600 d343fe81 d2d00000 f2fbffe0 (38e06820) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 54000600 b.eq 0xc0 // b.none 4: d343fe81 lsr x1, x20, #3 8: d2d00000 mov x0, #0x800000000000 // #140737488355328 c: f2fbffe0 movk x0, #0xdfff, lsl #48 * 10: 38e06820 ldrsb w0, [x1, x0] <-- trapping instruction