ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ================================================================== BUG: KASAN: slab-use-after-free in tty_write_room+0x7d/0x90 drivers/tty/tty_ioctl.c:68 Read of size 8 at addr ffff8880398a9020 by task aoe_tx0/1349 CPU: 0 PID: 1349 Comm: aoe_tx0 Not tainted 6.8.0-rc4-syzkaller-00014-g7e90b5c295ec #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 tty_write_room+0x7d/0x90 drivers/tty/tty_ioctl.c:68 handle_tx+0x151/0x630 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+0x13a/0x6d0 net/core/dev.c:3563 __dev_queue_xmit+0x7b6/0x3ee0 net/core/dev.c:4351 dev_queue_xmit include/linux/netdevice.h:3171 [inline] tx+0x76/0x100 drivers/block/aoe/aoenet.c:62 kthread+0x1e9/0x3c0 drivers/block/aoe/aoecmd.c:1229 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 Allocated by task 2912: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:389 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] alloc_tty_struct+0x98/0x8d0 drivers/tty/tty_io.c:3116 tty_init_dev.part.0+0x1e/0x660 drivers/tty/tty_io.c:1415 tty_init_dev+0x60/0x80 drivers/tty/tty_io.c:1412 ptmx_open drivers/tty/pty.c:824 [inline] ptmx_open+0x104/0x350 drivers/tty/pty.c:790 chrdev_open+0x26d/0x6f0 fs/char_dev.c:414 do_dentry_open+0x8da/0x18c0 fs/open.c:953 do_open fs/namei.c:3641 [inline] path_openat+0x1e00/0x29a0 fs/namei.c:3798 do_filp_open+0x1de/0x440 fs/namei.c:3825 do_sys_openat2+0x17a/0x1e0 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+0x175/0x210 fs/open.c:1430 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 3426: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1c0 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+0x124/0x370 mm/slub.c:4409 process_one_work+0x889/0x15e0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 Last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xba/0x110 mm/kasan/generic.c:586 insert_work+0x38/0x230 kernel/workqueue.c:1653 __queue_work+0x62e/0x11d0 kernel/workqueue.c:1802 queue_work_on+0xf4/0x120 kernel/workqueue.c:1837 kref_put include/linux/kref.h:65 [inline] tty_kref_put drivers/tty/tty_io.c:1572 [inline] tty_kref_put drivers/tty/tty_io.c:1569 [inline] release_tty+0x4e1/0x600 drivers/tty/tty_io.c:1608 tty_release_struct+0xb7/0xe0 drivers/tty/tty_io.c:1707 tty_release+0xe33/0x1420 drivers/tty/tty_io.c:1867 __fput+0x270/0xb80 fs/file_table.c:376 task_work_run+0x14f/0x250 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa8a/0x2ad0 kernel/exit.c:871 do_group_exit+0xd4/0x2a0 kernel/exit.c:1020 get_signal+0x23b9/0x2790 kernel/signal.c:2893 arch_do_signal_or_restart+0x90/0x7f0 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+0x156/0x2b0 kernel/entry/common.c:212 do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x6f/0x77 The buggy address belongs to the object at ffff8880398a9000 which belongs to the cache kmalloc-cg-2k of size 2048 The buggy address is located 32 bytes inside of freed 2048-byte region [ffff8880398a9000, ffff8880398a9800) The buggy address belongs to the physical page: page:ffffea0000e62a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880398ae000 pfn:0x398a8 head:ffffea0000e62a00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888037bdae41 flags: 0xfff00000000a40(workingset|slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000a40 ffff888014c50140 ffffea0000982c10 ffffea0000450610 raw: ffff8880398ae000 0000000000080007 00000001ffffffff ffff888037bdae41 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 5206, tgid 5206 (syz-executor.3), ts 984856046959, free_ts 984846082530 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311 __alloc_pages+0x22f/0x2440 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 mm/slub.c:2190 [inline] allocate_slab mm/slub.c:2354 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2407 ___slab_alloc+0x4af/0x19a0 mm/slub.c:3540 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3625 __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc_node+0x361/0x470 mm/slub.c:3988 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x9d/0x1a0 mm/util.c:617 kvmalloc include/linux/slab.h:728 [inline] kvmalloc_array include/linux/slab.h:746 [inline] alloc_fdtable+0xef/0x290 fs/file.c:136 dup_fd+0x77d/0xc70 fs/file.c:354 copy_files kernel/fork.c:1789 [inline] copy_process+0x2851/0x97b0 kernel/fork.c:2485 kernel_clone+0xfd/0x930 kernel/fork.c:2902 __do_sys_clone+0xba/0x100 kernel/fork.c:3045 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 page last free pid 32 tgid 32 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+0x527/0xb10 mm/page_alloc.c:2346 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486 rcu_do_batch kernel/rcu/tree.c:2190 [inline] rcu_core+0x819/0x1680 kernel/rcu/tree.c:2465 __do_softirq+0x21c/0x8e7 kernel/softirq.c:553 Memory state around the buggy address: ffff8880398a8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880398a8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880398a9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880398a9080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880398a9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================