================================================================== BUG: KASAN: slab-out-of-bounds in __hlist_del include/linux/list.h:906 [inline] BUG: KASAN: slab-out-of-bounds in hlist_del_init_rcu include/linux/rculist.h:184 [inline] BUG: KASAN: slab-out-of-bounds in __xfrm_state_delete+0x384/0x918 net/xfrm/xfrm_state.c:700 Write of size 8 at addr ffff0000c9d7ac18 by task dhcpcd-run-hook/7730 CPU: 1 PID: 7730 Comm: dhcpcd-run-hook Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0xfc mm/kasan/report.c:524 __asan_report_store8_noabort+0x2c/0x38 mm/kasan/report_generic.c:356 __hlist_del include/linux/list.h:906 [inline] hlist_del_init_rcu include/linux/rculist.h:184 [inline] __xfrm_state_delete+0x384/0x918 net/xfrm/xfrm_state.c:700 xfrm_timer_handler+0xec/0x810 net/xfrm/xfrm_state.c:631 __run_hrtimer kernel/time/hrtimer.c:1751 [inline] __hrtimer_run_queues+0x444/0xc58 kernel/time/hrtimer.c:1815 hrtimer_run_softirq+0x164/0x408 kernel/time/hrtimer.c:1832 handle_softirqs+0x318/0xc90 kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:901 do_softirq_own_stack+0x1c/0x28 arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x430 kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:585 __sanitizer_cov_trace_const_cmp4+0x4/0xac kernel/kcov.c:308 walk_component fs/namei.c:2012 [inline] link_path_walk+0x5f4/0xcd8 fs/namei.c:2333 path_lookupat+0xb4/0x3f0 fs/namei.c:2486 filename_lookup+0x1d4/0x490 fs/namei.c:2516 user_path_at_empty+0x5c/0x84 fs/namei.c:2956 user_path_at include/linux/namei.h:57 [inline] __do_sys_chdir fs/open.c:514 [inline] __se_sys_chdir fs/open.c:508 [inline] __arm64_sys_chdir+0xb8/0x278 fs/open.c:508 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589 Allocated by task 6731: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:53 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:375 [inline] __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:384 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xcc/0x174 mm/slab_common.c:956 kstrdup mm/util.c:61 [inline] kstrdup_const+0x90/0xdc mm/util.c:84 __kernfs_new_node+0xb0/0x5fc fs/kernfs/dir.c:610 kernfs_new_node+0x120/0x230 fs/kernfs/dir.c:690 __kernfs_create_file+0x60/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x1e8/0x2a4 fs/sysfs/file.c:298 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x3e8/0xb24 fs/sysfs/group.c:148 internal_create_groups fs/sysfs/group.c:188 [inline] sysfs_create_groups+0x60/0x134 fs/sysfs/group.c:214 setup_port drivers/infiniband/core/sysfs.c:1255 [inline] ib_setup_port_attrs+0xb38/0x1a14 drivers/infiniband/core/sysfs.c:1441 add_one_compat_dev+0x338/0x4e8 drivers/infiniband/core/device.c:979 rdma_dev_init_net+0x1f0/0x270 drivers/infiniband/core/device.c:1195 ops_init+0x2b0/0x53c net/core/net_namespace.c:138 setup_net+0x494/0xb6c net/core/net_namespace.c:336 copy_net_ns+0x2b8/0x578 net/core/net_namespace.c:508 create_new_namespaces+0x30c/0x604 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x108/0x160 kernel/nsproxy.c:226 ksys_unshare+0x3f0/0x70c kernel/fork.c:3289 __do_sys_unshare kernel/fork.c:3363 [inline] __se_sys_unshare kernel/fork.c:3361 [inline] __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3361 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589 The buggy address belongs to the object at ffff0000c9d7ac00 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 24 bytes inside of 128-byte region [ffff0000c9d7ac00, ffff0000c9d7ac80) The buggy address belongs to the physical page: page:00000000e73aceac refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109d7a flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 fffffc0003dd41c0 dead000000000002 ffff0000c0002300 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c9d7ab00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc ffff0000c9d7ab80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000c9d7ac00: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000c9d7ac80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000c9d7ad00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ================================================================== vkms_vblank_simulate: vblank timer overrun bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)