forked to background, child pid 4645
[ 30.660281][ T4646] 8021q: adding VLAN 0 to HW filter on device bond0
[ 30.670665][ T4646] eql: remember to turn off Van-Jacobson compression on your slave devices
[ 30.916963][ T4730] ssh-keygen (4730) used greatest stack depth: 16024 bytes left
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts.
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syzkaller login: [ 51.728904][ T5154] ==================================================================
[ 51.737020][ T5154] BUG: KASAN: use-after-free in gadgetfs_kill_sb+0x33/0x100
[ 51.744339][ T5154] Write of size 4 at addr ffff88802a065040 by task syz-executor154/5154
[ 51.752651][ T5154]
[ 51.754966][ T5154] CPU: 1 PID: 5154 Comm: syz-executor154 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
[ 51.765013][ T5154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 51.775052][ T5154] Call Trace:
[ 51.778316][ T5154]
[ 51.781235][ T5154] dump_stack_lvl+0x1b1/0x290
[ 51.785998][ T5154] ? nf_tcp_handle_invalid+0x630/0x630
[ 51.791441][ T5154] ? __wake_up_klogd+0xcd/0x100
[ 51.796283][ T5154] ? panic+0x710/0x710
[ 51.800344][ T5154] ? _printk+0xc0/0x100
[ 51.804490][ T5154] ? _raw_spin_lock_irqsave+0x8e/0x100
[ 51.809939][ T5154] print_address_description+0x74/0x340
[ 51.815483][ T5154] print_report+0x107/0x1f0
[ 51.819977][ T5154] ? __virt_addr_valid+0x21b/0x2d0
[ 51.825094][ T5154] ? __phys_addr+0xb5/0x160
[ 51.829588][ T5154] ? gadgetfs_kill_sb+0x33/0x100
[ 51.834510][ T5154] kasan_report+0xcd/0x100
[ 51.839125][ T5154] ? gadgetfs_kill_sb+0x33/0x100
[ 51.844051][ T5154] ? gadgetfs_get_tree+0x20/0x20
[ 51.848976][ T5154] kasan_check_range+0x2a7/0x2e0
[ 51.853907][ T5154] gadgetfs_kill_sb+0x33/0x100
[ 51.858660][ T5154] deactivate_locked_super+0xa7/0xf0
[ 51.863944][ T5154] get_tree_single+0xd0/0x160
[ 51.868610][ T5154] vfs_get_tree+0x88/0x270
[ 51.873014][ T5154] __se_sys_fsconfig+0xbc0/0x1060
[ 51.878028][ T5154] ? __x64_sys_fsconfig+0xc0/0xc0
[ 51.883037][ T5154] ? lockdep_hardirqs_on_prepare+0x428/0x790
[ 51.889005][ T5154] ? syscall_enter_from_user_mode+0x2e/0x1d0
[ 51.894974][ T5154] ? lockdep_hardirqs_on+0x8d/0x130
[ 51.900162][ T5154] ? __x64_sys_fsconfig+0x1c/0xc0
[ 51.905177][ T5154] do_syscall_64+0x3d/0xb0
[ 51.909588][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 51.915472][ T5154] RIP: 0033:0x7f30d255fe09
[ 51.919876][ T5154] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 51.939922][ T5154] RSP: 002b:00007fffe3583a38 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
[ 51.948327][ T5154] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f30d255fe09
[ 51.956291][ T5154] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
[ 51.964250][ T5154] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[ 51.972205][ T5154] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000c9da
[ 51.980171][ T5154] R13: 00007fffe3583a4c R14: 00007fffe3583a60 R15: 00007fffe3583a50
[ 51.988135][ T5154]
[ 51.991137][ T5154]
[ 51.993449][ T5154] Allocated by task 5151:
[ 51.997763][ T5154] kasan_set_track+0x3d/0x60
[ 52.002353][ T5154] __kasan_kmalloc+0x97/0xb0
[ 52.006939][ T5154] gadgetfs_fill_super+0x2f9/0x8a0
[ 52.012035][ T5154] get_tree_single+0xb4/0x160
[ 52.016701][ T5154] vfs_get_tree+0x88/0x270
[ 52.021098][ T5154] __se_sys_fsconfig+0xbc0/0x1060
[ 52.026110][ T5154] do_syscall_64+0x3d/0xb0
[ 52.030514][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 52.036401][ T5154]
[ 52.038717][ T5154] Freed by task 5151:
[ 52.042698][ T5154] kasan_set_track+0x3d/0x60
[ 52.047285][ T5154] kasan_save_free_info+0x27/0x40
[ 52.052300][ T5154] ____kasan_slab_free+0xd6/0x120
[ 52.057316][ T5154] slab_free_freelist_hook+0x12e/0x1a0
[ 52.062766][ T5154] __kmem_cache_free+0x71/0x110
[ 52.067601][ T5154] gadgetfs_kill_sb+0x8a/0x100
[ 52.072350][ T5154] deactivate_locked_super+0xa7/0xf0
[ 52.077622][ T5154] put_fs_context+0x90/0x7a0
[ 52.082195][ T5154] fscontext_release+0x61/0x80
[ 52.086943][ T5154] __fput+0x3ba/0x880
[ 52.090910][ T5154] task_work_run+0x243/0x300
[ 52.095488][ T5154] do_exit+0x644/0x2150
[ 52.099632][ T5154] do_group_exit+0x1fd/0x2b0
[ 52.104205][ T5154] __x64_sys_exit_group+0x3b/0x40
[ 52.109212][ T5154] do_syscall_64+0x3d/0xb0
[ 52.113614][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 52.119493][ T5154]
[ 52.121805][ T5154] The buggy address belongs to the object at ffff88802a065000
[ 52.121805][ T5154] which belongs to the cache kmalloc-1k of size 1024
[ 52.135847][ T5154] The buggy address is located 64 bytes inside of
[ 52.135847][ T5154] 1024-byte region [ffff88802a065000, ffff88802a065400)
[ 52.149102][ T5154]
[ 52.151411][ T5154] The buggy address belongs to the physical page:
[ 52.157803][ T5154] page:ffffea0000a81800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a060
[ 52.167955][ T5154] head:ffffea0000a81800 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
[ 52.177998][ T5154] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
[ 52.185965][ T5154] raw: 00fff00000010200 ffff888012841dc0 dead000000000122 0000000000000000
[ 52.194528][ T5154] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 52.203091][ T5154] page dumped because: kasan: bad access detected
[ 52.209482][ T5154] page_owner tracks the page as allocated
[ 52.215176][ T5154] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5059, tgid 5059 (sshd), ts 51612855816, free_ts 46187228809
[ 52.235821][ T5154] get_page_from_freelist+0x742/0x7c0
[ 52.241190][ T5154] __alloc_pages+0x259/0x560
[ 52.245768][ T5154] alloc_slab_page+0xbd/0x190
[ 52.250451][ T5154] allocate_slab+0x5e/0x3c0
[ 52.254939][ T5154] ___slab_alloc+0x782/0xe20
[ 52.259512][ T5154] __kmem_cache_alloc_node+0x25b/0x340
[ 52.264958][ T5154] __kmalloc_node_track_caller+0x9c/0x190
[ 52.270666][ T5154] __alloc_skb+0x12c/0x2c0
[ 52.275069][ T5154] tcp_stream_alloc_skb+0x3c/0x300
[ 52.280172][ T5154] tcp_sendmsg_locked+0xd80/0x40f0
[ 52.285264][ T5154] tcp_sendmsg+0x2c/0x40
[ 52.289489][ T5154] sock_write_iter+0x3d4/0x540
[ 52.294238][ T5154] vfs_write+0x7dc/0xc50
[ 52.298464][ T5154] ksys_write+0x177/0x2a0
[ 52.302779][ T5154] do_syscall_64+0x3d/0xb0
[ 52.307179][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 52.313057][ T5154] page last free stack trace:
[ 52.317714][ T5154] free_pcp_prepare+0x751/0x780
[ 52.322558][ T5154] free_unref_page+0x19/0x4c0
[ 52.327219][ T5154] __unfreeze_partials+0x1a5/0x1e0
[ 52.332321][ T5154] put_cpu_partial+0x106/0x170
[ 52.337072][ T5154] qlist_free_all+0x2b/0x70
[ 52.341560][ T5154] kasan_quarantine_reduce+0x156/0x170
[ 52.347002][ T5154] __kasan_slab_alloc+0x1f/0x70
[ 52.351841][ T5154] kmem_cache_alloc+0x1b3/0x350
[ 52.356680][ T5154] getname_flags+0xb8/0x4e0
[ 52.361168][ T5154] __se_sys_newfstatat+0xcb/0x7d0
[ 52.366180][ T5154] do_syscall_64+0x3d/0xb0
[ 52.370578][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 52.376461][ T5154]
[ 52.378775][ T5154] Memory state around the buggy address:
[ 52.384386][ T5154] ffff88802a064f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 52.392431][ T5154] ffff88802a064f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 52.400474][ T5154] >ffff88802a065000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 52.408518][ T5154] ^
[ 52.414652][ T5154] ffff88802a065080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 52.422695][ T5154] ffff88802a065100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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[ 52.430737][ T5154] ==================================================================
[ 52.470090][ T5154] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 52.477404][ T5154] CPU: 1 PID: 5154 Comm: syz-executor154 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
[ 52.487452][ T5154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 52.497488][ T5154] Call Trace:
[ 52.500759][ T5154]
[ 52.503676][ T5154] dump_stack_lvl+0x1b1/0x290
[ 52.508337][ T5154] ? nf_tcp_handle_invalid+0x630/0x630
[ 52.513774][ T5154] ? panic+0x710/0x710
[ 52.517826][ T5154] ? lock_release+0x81/0x820
[ 52.522398][ T5154] ? vscnprintf+0x59/0x80
[ 52.526712][ T5154] panic+0x2d6/0x710
[ 52.530593][ T5154] ? check_panic_on_warn+0x1d/0xa0
[ 52.535688][ T5154] ? memcpy_page_flushcache+0x100/0x100
[ 52.541231][ T5154] ? _raw_spin_unlock_irqrestore+0x110/0x120
[ 52.547201][ T5154] ? _raw_spin_unlock+0x40/0x40
[ 52.552032][ T5154] ? print_report+0x1b4/0x1f0
[ 52.556693][ T5154] check_panic_on_warn+0x80/0xa0
[ 52.561619][ T5154] ? gadgetfs_kill_sb+0x33/0x100
[ 52.566548][ T5154] end_report+0x47/0x90
[ 52.570688][ T5154] kasan_report+0xda/0x100
[ 52.575091][ T5154] ? gadgetfs_kill_sb+0x33/0x100
[ 52.580008][ T5154] ? gadgetfs_get_tree+0x20/0x20
[ 52.584925][ T5154] kasan_check_range+0x2a7/0x2e0
[ 52.589848][ T5154] gadgetfs_kill_sb+0x33/0x100
[ 52.594591][ T5154] deactivate_locked_super+0xa7/0xf0
[ 52.599859][ T5154] get_tree_single+0xd0/0x160
[ 52.604521][ T5154] vfs_get_tree+0x88/0x270
[ 52.608917][ T5154] __se_sys_fsconfig+0xbc0/0x1060
[ 52.613925][ T5154] ? __x64_sys_fsconfig+0xc0/0xc0
[ 52.618927][ T5154] ? lockdep_hardirqs_on_prepare+0x428/0x790
[ 52.624893][ T5154] ? syscall_enter_from_user_mode+0x2e/0x1d0
[ 52.630860][ T5154] ? lockdep_hardirqs_on+0x8d/0x130
[ 52.636045][ T5154] ? __x64_sys_fsconfig+0x1c/0xc0
[ 52.641143][ T5154] do_syscall_64+0x3d/0xb0
[ 52.645543][ T5154] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 52.651421][ T5154] RIP: 0033:0x7f30d255fe09
[ 52.655822][ T5154] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 52.675595][ T5154] RSP: 002b:00007fffe3583a38 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
[ 52.683997][ T5154] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f30d255fe09
[ 52.691957][ T5154] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
[ 52.699912][ T5154] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[ 52.707863][ T5154] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000c9da
[ 52.715820][ T5154] R13: 00007fffe3583a4c R14: 00007fffe3583a60 R15: 00007fffe3583a50
[ 52.723783][ T5154]
[ 52.726965][ T5154] Kernel Offset: disabled
[ 52.731285][ T5154] Rebooting in 86400 seconds..