ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ================================================================== BUG: KASAN: slab-use-after-free in tty_write_room+0x35/0x80 drivers/tty/tty_ioctl.c:80 Read of size 8 at addr ffff888090d3e018 by task aoe_tx0/1217 CPU: 0 PID: 1217 Comm: aoe_tx0 Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 tty_write_room+0x35/0x80 drivers/tty/tty_ioctl.c:80 handle_tx+0x164/0x620 drivers/net/caif/caif_serial.c:226 __netdev_start_xmit include/linux/netdevice.h:4918 [inline] netdev_start_xmit include/linux/netdevice.h:4932 [inline] xmit_one net/core/dev.c:3578 [inline] dev_hard_start_xmit+0x241/0x750 net/core/dev.c:3594 __dev_queue_xmit+0x19b9/0x38b0 net/core/dev.c:4244 dev_queue_xmit include/linux/netdevice.h:3088 [inline] tx+0x6a/0x110 drivers/block/aoe/aoenet.c:63 kthread+0x238/0x440 drivers/block/aoe/aoecmd.c:1229 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Allocated by task 28163: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:559 [inline] kzalloc include/linux/slab.h:680 [inline] alloc_tty_struct+0xa9/0x7a0 drivers/tty/tty_io.c:3090 tty_init_dev+0x5b/0x4b0 drivers/tty/tty_io.c:1408 tty_open_by_driver drivers/tty/tty_io.c:2081 [inline] tty_open+0x9d4/0xdd0 drivers/tty/tty_io.c:2128 chrdev_open+0x54e/0x630 fs/char_dev.c:414 do_dentry_open+0x7f9/0x10f0 fs/open.c:920 do_open fs/namei.c:3636 [inline] path_openat+0x27b3/0x3170 fs/namei.c:3791 do_filp_open+0x234/0x490 fs/namei.c:3818 do_sys_openat2+0x13f/0x500 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1383 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 15005: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3786 [inline] __kmem_cache_free+0x264/0x3c0 mm/slub.c:3799 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2408 worker_thread+0xa63/0x1210 kernel/workqueue.c:2555 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 insert_work+0x54/0x3d0 kernel/workqueue.c:1368 __queue_work+0xb37/0xf10 kernel/workqueue.c:1529 queue_work_on+0x14f/0x250 kernel/workqueue.c:1557 tty_release_struct+0xbc/0xe0 drivers/tty/tty_io.c:1700 tty_release+0xcff/0x12b0 drivers/tty/tty_io.c:1860 __fput+0x3b7/0x890 fs/file_table.c:321 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 kvfree_call_rcu+0x109/0x8d0 kernel/rcu/tree.c:3332 drop_sysctl_table+0x31c/0x460 fs/proc/proc_sysctl.c:1695 unregister_sysctl_table+0x8a/0x130 fs/proc/proc_sysctl.c:1733 nf_conntrack_standalone_fini_sysctl net/netfilter/nf_conntrack_standalone.c:1126 [inline] nf_conntrack_fini_net net/netfilter/nf_conntrack_standalone.c:1146 [inline] nf_conntrack_pernet_exit+0xc1/0x110 net/netfilter/nf_conntrack_standalone.c:1189 ops_exit_list net/core/net_namespace.c:175 [inline] setup_net+0x93d/0xb90 net/core/net_namespace.c:362 copy_net_ns+0x4cb/0x790 net/core/net_namespace.c:491 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x122/0x170 kernel/nsproxy.c:228 ksys_unshare+0x584/0xb20 kernel/fork.c:3441 __do_sys_unshare kernel/fork.c:3512 [inline] __se_sys_unshare kernel/fork.c:3510 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3510 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888090d3e000 which belongs to the cache kmalloc-cg-2k of size 2048 The buggy address is located 24 bytes inside of freed 2048-byte region [ffff888090d3e000, ffff888090d3e800) The buggy address belongs to the physical page: page:ffffea0002434e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x90d38 head:ffffea0002434e00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88801e740c01 anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff88801244f3c0 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000080008 00000001ffffffff ffff88801e740c01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 27495, tgid 27489 (syz-executor.3), ts 1887779442873, free_ts 1887743129647 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192 __slab_alloc mm/slub.c:3291 [inline] __slab_alloc_node mm/slub.c:3344 [inline] slab_alloc_node mm/slub.c:3441 [inline] __kmem_cache_alloc_node+0x1b8/0x290 mm/slub.c:3490 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1057 kmalloc include/linux/slab.h:559 [inline] kzalloc include/linux/slab.h:680 [inline] ipv6_add_dev+0x10b/0x1280 net/ipv6/addrconf.c:378 addrconf_notify+0x683/0xfe0 net/ipv6/addrconf.c:3552 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 call_netdevice_notifiers_info net/core/dev.c:1935 [inline] call_netdevice_notifiers_extack net/core/dev.c:1973 [inline] call_netdevice_notifiers+0x149/0x1c0 net/core/dev.c:1987 register_netdevice+0x1349/0x1790 net/core/dev.c:10120 register_netdev+0x3b/0x50 net/core/dev.c:10215 ip6gre_init_net+0x215/0x2e0 net/ipv6/ip6_gre.c:1620 ops_init+0x351/0x600 net/core/net_namespace.c:136 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2564 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711 slab_alloc_node mm/slub.c:3451 [inline] __kmem_cache_alloc_node+0x14c/0x290 mm/slub.c:3490 __do_kmalloc_node mm/slab_common.c:965 [inline] __kmalloc+0xa8/0x230 mm/slab_common.c:979 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:680 [inline] ops_init+0x8b/0x600 net/core/net_namespace.c:126 setup_net+0x4b9/0xb90 net/core/net_namespace.c:339 copy_net_ns+0x4cb/0x790 net/core/net_namespace.c:491 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x122/0x170 kernel/nsproxy.c:228 ksys_unshare+0x584/0xb20 kernel/fork.c:3441 __do_sys_unshare kernel/fork.c:3512 [inline] __se_sys_unshare kernel/fork.c:3510 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3510 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff888090d3df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888090d3df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888090d3e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888090d3e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888090d3e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================