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:68 Read of size 8 at addr ffff88803cf7f020 by task aoe_tx0/1228 CPU: 1 PID: 1228 Comm: aoe_tx0 Not tainted 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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:377 [inline] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 tty_write_room+0x35/0x80 drivers/tty/tty_ioctl.c:68 handle_tx+0x164/0x630 drivers/net/caif/caif_serial.c:226 __netdev_start_xmit include/linux/netdevice.h:4989 [inline] netdev_start_xmit include/linux/netdevice.h:5003 [inline] xmit_one net/core/dev.c:3547 [inline] dev_hard_start_xmit+0x23e/0x760 net/core/dev.c:3563 __dev_queue_xmit+0x19f0/0x3b00 net/core/dev.c:4351 dev_queue_xmit include/linux/netdevice.h:3171 [inline] tx+0x6a/0x110 drivers/block/aoe/aoenet.c:62 kthread+0x238/0x450 drivers/block/aoe/aoecmd.c:1229 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Allocated by task 28199: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x70 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x1d6/0x360 mm/slub.c:4012 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] alloc_tty_struct+0xa9/0x7c0 drivers/tty/tty_io.c:3116 tty_init_dev+0x5b/0x4b0 drivers/tty/tty_io.c:1415 tty_open_by_driver drivers/tty/tty_io.c:2088 [inline] tty_open+0x9da/0xde0 drivers/tty/tty_io.c:2135 chrdev_open+0x5ab/0x630 fs/char_dev.c:414 do_dentry_open+0x8ff/0x1590 fs/open.c:953 do_open fs/namei.c:3641 [inline] path_openat+0x2823/0x31e0 fs/namei.c:3798 do_filp_open+0x234/0x490 fs/namei.c:3825 do_sys_openat2+0x13e/0x1d0 fs/open.c:1404 do_sys_open fs/open.c:1419 [inline] __do_sys_openat fs/open.c:1435 [inline] __se_sys_openat fs/open.c:1430 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1430 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 5131: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x70 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x60 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x14a/0x380 mm/slub.c:4409 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2706 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xae/0x100 mm/kasan/generic.c:586 insert_work+0x3e/0x330 kernel/workqueue.c:1653 __queue_work+0xbf4/0x1000 kernel/workqueue.c:1802 queue_work_on+0x14f/0x250 kernel/workqueue.c:1837 tty_release_struct+0xbc/0xe0 drivers/tty/tty_io.c:1707 tty_release+0xd02/0x12c0 drivers/tty/tty_io.c:1867 __fput+0x428/0x890 fs/file_table.c:376 task_work_run+0x24a/0x300 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa2c/0x2740 kernel/exit.c:871 do_group_exit+0x206/0x2c0 kernel/exit.c:1020 get_signal+0x1769/0x1840 kernel/signal.c:2893 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:105 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212 do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff88803cf7f000 which belongs to the cache kmalloc-cg-2k of size 2048 The buggy address is located 32 bytes inside of freed 2048-byte region [ffff88803cf7f000, ffff88803cf7f800) The buggy address belongs to the physical page: page:ffffea0000f3de00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803cf79000 pfn:0x3cf78 head:ffffea0000f3de00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888023246901 flags: 0xfff00000000a40(workingset|slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000a40 ffff88801304f3c0 ffffea0000f6be10 ffffea0002036810 raw: ffff88803cf79000 0000000000080007 00000001ffffffff ffff888023246901 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 16513, tgid 16510 (syz-executor.3), ts 438217292725, free_ts 431509170167 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3311 __alloc_pages+0x255/0x680 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2190 allocate_slab mm/slub.c:2354 [inline] new_slab+0x84/0x2f0 mm/slub.c:2407 ___slab_alloc+0xd17/0x13d0 mm/slub.c:3540 __slab_alloc mm/slub.c:3625 [inline] __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] kmalloc_trace+0x25d/0x360 mm/slub.c:4007 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] ipv6_add_dev+0x108/0x1290 net/ipv6/addrconf.c:381 addrconf_notify+0x6a7/0x1010 net/ipv6/addrconf.c:3593 notifier_call_chain+0x18c/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2004 [inline] call_netdevice_notifiers net/core/dev.c:2018 [inline] register_netdevice+0x150c/0x19b0 net/core/dev.c:10294 ldisc_open+0x4a8/0x800 drivers/net/caif/caif_serial.c:351 tty_ldisc_open drivers/tty/tty_ldisc.c:432 [inline] tty_set_ldisc+0x375/0x680 drivers/tty/tty_ldisc.c:557 tty_ioctl+0xbc2/0xda0 drivers/tty/tty_io.c:2739 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 page last free pid 15870 tgid 15867 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x959/0xa80 mm/page_alloc.c:2346 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486 discard_slab mm/slub.c:2453 [inline] __put_partials+0xeb/0x130 mm/slub.c:2922 put_cpu_partial+0x17b/0x250 mm/slub.c:2997 __slab_free+0x2fe/0x410 mm/slub.c:4166 qlink_free mm/kasan/quarantine.c:160 [inline] qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:324 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmalloc_trace+0x16a/0x360 mm/slub.c:4007 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] io_ring_ctx_alloc+0x54/0xba0 io_uring/io_uring.c:292 io_uring_create+0x2ca/0x12f0 io_uring/io_uring.c:3871 io_uring_setup io_uring/io_uring.c:4056 [inline] __do_sys_io_uring_setup io_uring/io_uring.c:4083 [inline] __se_sys_io_uring_setup+0x2b6/0x330 io_uring/io_uring.c:4077 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Memory state around the buggy address: ffff88803cf7ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803cf7ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88803cf7f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88803cf7f080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803cf7f100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================