ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy ieee802154 phy1 wpan1: encryption failed: -22 ================================================================== BUG: KASAN: slab-use-after-free in tty_write_room+0x3c/0x8c drivers/tty/tty_ioctl.c:68 Read of size 8 at addr ffff0000de8dc020 by task aoe_tx0/2467 CPU: 0 UID: 0 PID: 2467 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_address_description+0xa8/0x238 mm/kasan/report.c:378 print_report+0x68/0x84 mm/kasan/report.c:482 kasan_report+0xb0/0x110 mm/kasan/report.c:595 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381 tty_write_room+0x3c/0x8c drivers/tty/tty_ioctl.c:68 handle_tx+0x128/0x5fc drivers/net/caif/caif_serial.c:212 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:268 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x298/0x890 net/core/dev.c:3869 __dev_queue_xmit+0x10c4/0x2a68 net/core/dev.c:4817 dev_queue_xmit include/linux/netdevice.h:3381 [inline] tx+0x9c/0x1cc drivers/block/aoe/aoenet.c:62 kthread+0x164/0x354 drivers/block/aoe/aoecmd.c:1241 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Allocated by task 8718: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:570 poison_kmalloc_redzone mm/kasan/common.c:397 [inline] __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:414 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3b8/0x698 mm/slub.c:5776 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] alloc_tty_struct+0xb8/0x654 drivers/tty/tty_io.c:3102 tty_init_dev+0x60/0x3e8 drivers/tty/tty_io.c:1400 ptmx_open+0x128/0x328 drivers/tty/pty.c:799 chrdev_open+0x1b0/0x4b0 fs/char_dev.c:414 do_dentry_open+0x68c/0x1154 fs/open.c:962 vfs_open+0x44/0x2d4 fs/open.c:1094 do_open fs/namei.c:4628 [inline] path_openat+0x2890/0x3114 fs/namei.c:4787 do_filp_open+0x18c/0x36c fs/namei.c:4814 do_sys_openat2+0x11c/0x1f0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1447 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Freed by task 6630: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6668 [inline] kfree+0x1c4/0x5fc mm/slub.c:6876 free_tty_struct drivers/tty/tty_io.c:174 [inline] release_one_tty+0x224/0x240 drivers/tty/tty_io.c:1533 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Last potentially related work creation: kasan_save_stack+0x40/0x6c mm/kasan/common.c:56 kasan_record_aux_stack+0xb0/0xc8 mm/kasan/generic.c:556 insert_work+0x54/0x2cc kernel/workqueue.c:2180 __queue_work+0xd88/0x121c kernel/workqueue.c:2335 queue_work_on+0xdc/0x18c kernel/workqueue.c:2386 queue_work include/linux/workqueue.h:669 [inline] schedule_work include/linux/workqueue.h:730 [inline] queue_release_one_tty drivers/tty/tty_io.c:1544 [inline] kref_put include/linux/kref.h:65 [inline] tty_kref_put+0x144/0x1b8 drivers/tty/tty_io.c:1557 release_tty+0x3e8/0x4a4 drivers/tty/tty_io.c:1593 tty_release_struct+0xb4/0xd4 drivers/tty/tty_io.c:1692 tty_release+0xa0c/0x129c drivers/tty/tty_io.c:1852 __fput+0x340/0x75c fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 The buggy address belongs to the object at ffff0000de8dc000 which belongs to the cache kmalloc-cg-2k of size 2048 The buggy address is located 32 bytes inside of freed 2048-byte region [ffff0000de8dc000, ffff0000de8dc800) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e8d8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff0000d9650101 flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000040 ffff0000c000b3c0 fffffdffc3888200 dead000000000002 raw: 0000000000000000 0000000000080008 00000000f5000000 ffff0000d9650101 head: 05ffc00000000040 ffff0000c000b3c0 fffffdffc3888200 dead000000000002 head: 0000000000000000 0000000000080008 00000000f5000000 ffff0000d9650101 head: 05ffc00000000003 fffffdffc37a3601 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000de8dbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000de8dbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000de8dc000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000de8dc080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000de8dc100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Unable to handle kernel paging request at virtual address 000c007ca0000300 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, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [000c007ca0000300] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 2467 Comm: aoe_tx0 Tainted: G B syzkaller #0 PREEMPT Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : get_work_pool+0xf8/0x198 kernel/workqueue.c:887 lr : work_struct_pwq kernel/workqueue.c:851 [inline] lr : get_work_pool+0xf0/0x198 kernel/workqueue.c:887 sp : ffff8000a1aa75b0 x29: ffff8000a1aa75b0 x28: ffff80008f871fc8 x27: ffff0000e0dce020 x26: ffff0000c00319c8 x25: ffff0000c1088000 x24: ffff0000c1083000 x23: dfff800000000000 x22: 0000000000000000 x21: 006403e5000019e7 x20: dfff800000000000 x19: 006403e500001800 x18: 00000000ffffffff x17: ffff800083b5d1a0 x16: ffff80008af95e04 x15: ffff60001c1b9c01 x14: 1fffe0001c1b9c01 x13: 00000000000000fb x12: ffffffffffffffff x11: ffff60001c1b9c01 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 000c807ca0000300 x7 : 0010a28800000000 x6 : ffff800080443e20 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080433ac4 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000000 Call trace: get_work_pool+0xf8/0x198 kernel/workqueue.c:887 (P) __queue_work+0x6d0/0x121c kernel/workqueue.c:2277 queue_work_on+0xdc/0x18c kernel/workqueue.c:2386 queue_work include/linux/workqueue.h:669 [inline] tty_insert_flip_string_and_push_buffer+0x14c/0x1bc drivers/tty/tty_buffer.c:563 pty_write+0xac/0xe8 drivers/tty/pty.c:116 handle_tx+0x200/0x5fc drivers/net/caif/caif_serial.c:222 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:268 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x298/0x890 net/core/dev.c:3869 __dev_queue_xmit+0x10c4/0x2a68 net/core/dev.c:4817 dev_queue_xmit include/linux/netdevice.h:3381 [inline] tx+0x9c/0x1cc drivers/block/aoe/aoenet.c:62 kthread+0x164/0x354 drivers/block/aoe/aoecmd.c:1241 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Code: 1400000f 940c69f5 9277dab3 d343fe68 (38746908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 1400000f b 0x3c 4: 940c69f5 bl 0x31a7d8 8: 9277dab3 and x19, x21, #0xfffffffffffffe00 c: d343fe68 lsr x8, x19, #3 * 10: 38746908 ldrb w8, [x8, x20] <-- trapping instruction