forked to background, child pid 192
no interfaces have a carrier
Starting sshd: OK

syzkaller
syzkaller login: [   17.575186][   T22] kauditd_printk_skb: 60 callbacks suppressed
[   17.575194][   T22] audit: type=1400 audit(1639308713.000:71): avc:  denied  { transition } for  pid=286 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   17.580429][   T22] audit: type=1400 audit(1639308713.010:72): avc:  denied  { write } for  pid=286 comm="sh" path="pipe:[10657]" dev="pipefs" ino=10657 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1
Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts.
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[   45.313453][   T22] audit: type=1400 audit(1639308740.740:73): avc:  denied  { execmem } for  pid=298 comm="syz-executor300" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   45.333118][   T22] audit: type=1400 audit(1639308740.750:74): avc:  denied  { create } for  pid=307 comm="syz-executor300" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=packet_socket permissive=1
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[   45.353209][   T22] audit: type=1400 audit(1639308740.750:75): avc:  denied  { setopt } for  pid=307 comm="syz-executor300" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=packet_socket permissive=1
[   45.373180][   T22] audit: type=1400 audit(1639308740.790:76): avc:  denied  { ioctl } for  pid=312 comm="syz-executor300" path="socket:[10801]" dev="sockfs" ino=10801 ioctlcmd=0x9429 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=packet_socket permissive=1
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[   49.013280][T10351] ==================================================================
[   49.021369][T10351] BUG: KASAN: double-free or invalid-free in kfree+0xe0/0x660
[   49.028798][T10351] 
[   49.031099][T10351] CPU: 0 PID: 10351 Comm: syz-executor300 Not tainted 5.4.147-syzkaller-00006-g4fd09f7a7972 #0
[   49.041380][T10351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.051403][T10351] Call Trace:
[   49.054696][T10351]  dump_stack+0x18e/0x1de
[   49.058995][T10351]  ? vprintk_emit+0x385/0x400
[   49.063641][T10351]  ? kfree+0xe0/0x660
[   49.067595][T10351]  print_address_description+0x9b/0x650
[   49.073113][T10351]  ? kfree+0xe0/0x660
[   49.077068][T10351]  ? printk+0x76/0xa4
[   49.081020][T10351]  ? vprintk_emit+0x37c/0x400
[   49.085668][T10351]  ? _raw_spin_lock_irqsave+0x9a/0x190
[   49.091095][T10351]  ? kfree+0xe0/0x660
[   49.095042][T10351]  ? kfree+0xe0/0x660
[   49.098987][T10351]  kasan_report_invalid_free+0x54/0x120
[   49.104496][T10351]  __kasan_slab_free+0x10e/0x240
[   49.109403][T10351]  ? slab_free_freelist_hook+0x7b/0x150
[   49.114926][T10351]  slab_free_freelist_hook+0x7b/0x150
[   49.120316][T10351]  ? packet_set_ring+0x1830/0x25a0
[   49.125404][T10351]  kfree+0xe0/0x660
[   49.129198][T10351]  ? refcount_inc_not_zero_checked+0x146/0x200
[   49.135320][T10351]  packet_set_ring+0x1830/0x25a0
[   49.140230][T10351]  ? __local_bh_enable_ip+0x48/0x70
[   49.145393][T10351]  ? check_stack_object+0x5a/0x90
[   49.150394][T10351]  packet_setsockopt+0xa9b/0x3920
[   49.155397][T10351]  ? packet_ioctl+0x220/0x220
[   49.160055][T10351]  __sys_setsockopt+0x471/0x700
[   49.164881][T10351]  __x64_sys_setsockopt+0xb1/0xc0
[   49.169877][T10351]  do_syscall_64+0xcb/0x1e0
[   49.174349][T10351]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.180215][T10351] RIP: 0033:0x7fefcd8c1a19
[   49.184599][T10351] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48
[   49.204176][T10351] RSP: 002b:00007fefcd852318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   49.212554][T10351] RAX: ffffffffffffffda RBX: 00007fefcd9493f8 RCX: 00007fefcd8c1a19
[   49.220493][T10351] RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
[   49.228433][T10351] RBP: 00007fefcd9493f0 R08: 000000000000001c R09: 0000000000000000
[   49.236374][T10351] R10: 00000000200000c0 R11: 0000000000000246 R12: 00007fefcd917074
[   49.244314][T10351] R13: 00007fffb3b3052f R14: 00007fefcd852400 R15: 0000000000022000
[   49.252253][T10351] 
[   49.254548][T10351] Allocated by task 10346:
[   49.258942][T10351]  __kasan_kmalloc+0x137/0x1e0
[   49.263674][T10351]  __kmalloc+0x174/0x2f0
[   49.267885][T10351]  packet_set_ring+0x5e7/0x25a0
[   49.272703][T10351]  packet_setsockopt+0xa9b/0x3920
[   49.277698][T10351]  __sys_setsockopt+0x471/0x700
[   49.282522][T10351]  __x64_sys_setsockopt+0xb1/0xc0
[   49.287516][T10351]  do_syscall_64+0xcb/0x1e0
[   49.291991][T10351]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.297848][T10351] 
[   49.300143][T10351] Freed by task 10346:
[   49.304192][T10351]  __kasan_slab_free+0x18a/0x240
[   49.309096][T10351]  slab_free_freelist_hook+0x7b/0x150
[   49.314474][T10351]  kfree+0xe0/0x660
[   49.318252][T10351]  packet_set_ring+0x1958/0x25a0
[   49.323158][T10351]  packet_setsockopt+0xa9b/0x3920
[   49.328158][T10351]  __sys_setsockopt+0x471/0x700
[   49.332981][T10351]  __x64_sys_setsockopt+0xb1/0xc0
[   49.337970][T10351]  do_syscall_64+0xcb/0x1e0
[   49.342528][T10351]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.348386][T10351] 
[   49.350690][T10351] The buggy address belongs to the object at ffff8881e844c200
[   49.350690][T10351]  which belongs to the cache kmalloc-64 of size 64
[   49.364534][T10351] The buggy address is located 0 bytes inside of
[   49.364534][T10351]  64-byte region [ffff8881e844c200, ffff8881e844c240)
[   49.377506][T10351] The buggy address belongs to the page:
[   49.383112][T10351] page:ffffea0007a11300 refcount:1 mapcount:0 mapping:ffff8881f5c03180 index:0x0
[   49.392180][T10351] flags: 0x8000000000000200(slab)
[   49.397177][T10351] raw: 8000000000000200 ffffea0007a10d80 0000000a0000000a ffff8881f5c03180
[   49.405729][T10351] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   49.414282][T10351] page dumped because: kasan: bad access detected
[   49.420660][T10351] page_owner tracks the page as allocated
[   49.426342][T10351] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY)
[   49.438286][T10351]  prep_new_page+0x19a/0x380
[   49.442842][T10351]  get_page_from_freelist+0x550/0x8b0
[   49.448178][T10351]  __alloc_pages_nodemask+0x2d6/0x740
[   49.453516][T10351]  alloc_slab_page+0x39/0x3e0
[   49.458159][T10351]  new_slab+0x97/0x460
[   49.462193][T10351]  ___slab_alloc+0x330/0x4c0
[   49.466747][T10351]  kmem_cache_alloc_trace+0x199/0x2b0
[   49.472084][T10351]  kernfs_fop_open+0x859/0xad0
[   49.476815][T10351]  do_dentry_open+0x7e6/0xef0
[   49.481459][T10351]  path_openat+0xfed/0x3a50
[   49.485928][T10351]  do_filp_open+0x19a/0x3a0
[   49.490397][T10351]  do_sys_open+0x2e2/0x6d0
[   49.494781][T10351]  do_syscall_64+0xcb/0x1e0
[   49.499250][T10351]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.505106][T10351] page_owner free stack trace missing
[   49.510452][T10351] 
[   49.512750][T10351] Memory state around the buggy address:
[   49.518349][T10351]  ffff8881e844c100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   49.526375][T10351]  ffff8881e844c180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   49.534405][T10351] >ffff8881e844c200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   49.542435][T10351]                    ^
[   49.546469][T10351]  ffff8881e844c280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   49.554495][T10351]  ffff8881e844c300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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[   49.562522][T10351] ==================================================================
[   49.570553][T10351] Disabling lock debugging due to kernel taint
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[   55.065188][T25581] ==================================================================
[   55.073270][T25581] BUG: KASAN: double-free or invalid-free in kfree+0xe0/0x660
[   55.080692][T25581] 
[   55.082996][T25581] CPU: 1 PID: 25581 Comm: syz-executor300 Tainted: G    B             5.4.147-syzkaller-00006-g4fd09f7a7972 #0
[   55.094666][T25581] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.104691][T25581] Call Trace:
[   55.107952][T25581]  dump_stack+0x18e/0x1de
[   55.112249][T25581]  ? vprintk_emit+0x385/0x400
[   55.116894][T25581]  ? kfree+0xe0/0x660
[   55.120848][T25581]  print_address_description+0x9b/0x650
[   55.126360][T25581]  ? kfree+0xe0/0x660
[   55.130314][T25581]  ? printk+0x76/0xa4
[   55.134265][T25581]  ? vprintk_emit+0x37c/0x400
[   55.138913][T25581]  ? _raw_spin_lock_irqsave+0x9a/0x190
[   55.144338][T25581]  ? kfree+0xe0/0x660
[   55.148288][T25581]  ? kfree+0xe0/0x660
[   55.152240][T25581]  kasan_report_invalid_free+0x54/0x120
[   55.157750][T25581]  __kasan_slab_free+0x10e/0x240
[   55.162660][T25581]  ? finish_wait+0xa3/0x1a0
[   55.167137][T25581]  ? slab_free_freelist_hook+0x7b/0x150
[   55.172656][T25581]  slab_free_freelist_hook+0x7b/0x150
[   55.178006][T25581]  ? packet_set_ring+0x1830/0x25a0
[   55.183085][T25581]  kfree+0xe0/0x660
[   55.186865][T25581]  ? refcount_inc_not_zero_checked+0x146/0x200
[   55.192989][T25581]  packet_set_ring+0x1830/0x25a0
[   55.197900][T25581]  ? __local_bh_enable_ip+0x48/0x70
[   55.203071][T25581]  ? check_stack_object+0x5a/0x90
[   55.208070][T25581]  packet_setsockopt+0xa9b/0x3920
[   55.213066][T25581]  ? packet_ioctl+0x220/0x220
[   55.217713][T25581]  __sys_setsockopt+0x471/0x700
[   55.222708][T25581]  __x64_sys_setsockopt+0xb1/0xc0
[   55.227702][T25581]  do_syscall_64+0xcb/0x1e0
[   55.232173][T25581]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.238030][T25581] RIP: 0033:0x7fefcd8c1a19
[   55.242414][T25581] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48
[   55.261986][T25581] RSP: 002b:00007fefcd852318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   55.270362][T25581] RAX: ffffffffffffffda RBX: 00007fefcd9493f8 RCX: 00007fefcd8c1a19
[   55.278304][T25581] RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
[   55.286242][T25581] RBP: 00007fefcd9493f0 R08: 000000000000001c R09: 0000000000000000
[   55.294182][T25581] R10: 00000000200000c0 R11: 0000000000000246 R12: 00007fefcd917074
[   55.302120][T25581] R13: 00007fffb3b3052f R14: 00007fefcd852400 R15: 0000000000022000
[   55.310062][T25581] 
[   55.312362][T25581] Allocated by task 25576:
[   55.316752][T25581]  __kasan_kmalloc+0x137/0x1e0
[   55.321488][T25581]  __kmalloc+0x174/0x2f0
[   55.325706][T25581]  packet_set_ring+0x5e7/0x25a0
[   55.330523][T25581]  packet_setsockopt+0xa9b/0x3920
[   55.335516][T25581]  __sys_setsockopt+0x471/0x700
[   55.340333][T25581]  __x64_sys_setsockopt+0xb1/0xc0
[   55.345432][T25581]  do_syscall_64+0xcb/0x1e0
[   55.349900][T25581]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.355751][T25581] 
[   55.358044][T25581] Freed by task 25576:
[   55.362077][T25581]  __kasan_slab_free+0x18a/0x240
[   55.366979][T25581]  slab_free_freelist_hook+0x7b/0x150
[   55.372315][T25581]  kfree+0xe0/0x660
[   55.376087][T25581]  packet_set_ring+0x1958/0x25a0
[   55.380993][T25581]  packet_setsockopt+0xa9b/0x3920
[   55.385983][T25581]  __sys_setsockopt+0x471/0x700
[   55.390799][T25581]  __x64_sys_setsockopt+0xb1/0xc0
[   55.395789][T25581]  do_syscall_64+0xcb/0x1e0
[   55.400256][T25581]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.406109][T25581] 
[   55.408409][T25581] The buggy address belongs to the object at ffff8881eb77b400
[   55.408409][T25581]  which belongs to the cache kmalloc-64 of size 64
[   55.422254][T25581] The buggy address is located 0 bytes inside of
[   55.422254][T25581]  64-byte region [ffff8881eb77b400, ffff8881eb77b440)
[   55.435226][T25581] The buggy address belongs to the page:
[   55.440830][T25581] page:ffffea0007addec0 refcount:1 mapcount:0 mapping:ffff8881f5c03180 index:0x0
[   55.449901][T25581] flags: 0x8000000000000200(slab)
[   55.454889][T25581] raw: 8000000000000200 ffffea0007acbdc0 0000001700000017 ffff8881f5c03180
[   55.463442][T25581] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   55.471995][T25581] page dumped because: kasan: bad access detected
[   55.478374][T25581] page_owner tracks the page as allocated
[   55.484063][T25581] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY)
[   55.496013][T25581]  prep_new_page+0x19a/0x380
[   55.500570][T25581]  get_page_from_freelist+0x550/0x8b0
[   55.505912][T25581]  __alloc_pages_nodemask+0x2d6/0x740
[   55.511250][T25581]  alloc_slab_page+0x39/0x3e0
[   55.515892][T25581]  new_slab+0x97/0x460
[   55.519928][T25581]  ___slab_alloc+0x330/0x4c0
[   55.524485][T25581]  kmem_cache_alloc_trace+0x199/0x2b0
[   55.529822][T25581]  kernfs_fop_open+0x859/0xad0
[   55.534551][T25581]  do_dentry_open+0x7e6/0xef0
[   55.539198][T25581]  path_openat+0xfed/0x3a50
[   55.543666][T25581]  do_filp_open+0x19a/0x3a0
[   55.548135][T25581]  do_sys_open+0x2e2/0x6d0
[   55.552517][T25581]  do_syscall_64+0xcb/0x1e0
[   55.556988][T25581]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.562841][T25581] page last free stack trace:
[   55.567485][T25581]  free_pcp_prepare+0x1a9/0x270
[   55.572302][T25581]  __free_pages+0x54/0x1e0
[   55.576686][T25581]  inode_doinit_with_dentry+0xaea/0x1170
[   55.582284][T25581]  security_d_instantiate+0xa5/0x100
[   55.587533][T25581]  d_splice_alias+0x71/0x590
[   55.592091][T25581]  kernfs_iop_lookup+0x17a/0x1f0
[   55.596991][T25581]  path_openat+0x15ca/0x3a50
[   55.601545][T25581]  do_filp_open+0x19a/0x3a0
[   55.606016][T25581]  do_sys_open+0x2e2/0x6d0
[   55.610400][T25581]  do_syscall_64+0xcb/0x1e0
[   55.614872][T25581]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.620726][T25581] 
[   55.623019][T25581] Memory state around the buggy address:
[   55.628624][T25581]  ffff8881eb77b300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   55.636657][T25581]  ffff8881eb77b380: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
[   55.644686][T25581] >ffff8881eb77b400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   55.652709][T25581]                    ^
[   55.656749][T25581]  ffff8881eb77b480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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[   55.664780][T25581]  ffff8881eb77b500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   55.672802][T25581] ==================================================================
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[   56.439007][T27566] ==================================================================
[   56.447092][T27566] BUG: KASAN: double-free or invalid-free in kfree+0xe0/0x660
[   56.454516][T27566] 
[   56.456818][T27566] CPU: 1 PID: 27566 Comm: syz-executor300 Tainted: G    B             5.4.147-syzkaller-00006-g4fd09f7a7972 #0
[   56.468493][T27566] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.478524][T27566] Call Trace:
[   56.481794][T27566]  dump_stack+0x18e/0x1de
[   56.486096][T27566]  ? vprintk_emit+0x385/0x400
[   56.490743][T27566]  ? kfree+0xe0/0x660
[   56.494705][T27566]  print_address_description+0x9b/0x650
[   56.500217][T27566]  ? kfree+0xe0/0x660
[   56.504169][T27566]  ? printk+0x76/0xa4
[   56.508117][T27566]  ? vprintk_emit+0x37c/0x400
[   56.512764][T27566]  ? _raw_spin_lock_irqsave+0x9a/0x190
[   56.518190][T27566]  ? kfree+0xe0/0x660
[   56.522140][T27566]  ? kfree+0xe0/0x660
[   56.526088][T27566]  kasan_report_invalid_free+0x54/0x120
[   56.531609][T27566]  __kasan_slab_free+0x10e/0x240
[   56.536514][T27566]  ? ttwu_do_wakeup+0x16f/0x470
[   56.541339][T27566]  ? try_to_wake_up+0xa69/0x12a0
[   56.546253][T27566]  ? refcount_sub_and_test_checked+0x151/0x210
[   56.552376][T27566]  ? wake_up_q+0xa4/0xc0
[   56.556586][T27566]  ? __mutex_unlock_slowpath+0x1b5/0x1e0
[   56.562186][T27566]  ? synchronize_rcu_expedited+0x456/0x540
[   56.567957][T27566]  slab_free_freelist_hook+0x7b/0x150
[   56.573298][T27566]  ? packet_set_ring+0x1830/0x25a0
[   56.578377][T27566]  kfree+0xe0/0x660
[   56.582157][T27566]  ? refcount_inc_not_zero_checked+0x146/0x200
[   56.588279][T27566]  packet_set_ring+0x1830/0x25a0
[   56.593192][T27566]  ? __local_bh_enable_ip+0x48/0x70
[   56.598365][T27566]  ? check_stack_object+0x5a/0x90
[   56.603357][T27566]  packet_setsockopt+0xa9b/0x3920
[   56.608354][T27566]  ? packet_ioctl+0x220/0x220
[   56.613002][T27566]  __sys_setsockopt+0x471/0x700
[   56.617820][T27566]  __x64_sys_setsockopt+0xb1/0xc0
[   56.622820][T27566]  do_syscall_64+0xcb/0x1e0
[   56.627297][T27566]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.633164][T27566] RIP: 0033:0x7fefcd8c1a19
[   56.637546][T27566] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48
[   56.657121][T27566] RSP: 002b:00007fefcd852318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   56.665499][T27566] RAX: ffffffffffffffda RBX: 00007fefcd9493f8 RCX: 00007fefcd8c1a19
[   56.673440][T27566] RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
[   56.681379][T27566] RBP: 00007fefcd9493f0 R08: 000000000000001c R09: 0000000000000000
[   56.689325][T27566] R10: 00000000200000c0 R11: 0000000000000246 R12: 00007fefcd917074
[   56.697267][T27566] R13: 00007fffb3b3052f R14: 00007fefcd852400 R15: 0000000000022000
[   56.705211][T27566] 
[   56.707526][T27566] Allocated by task 27565:
[   56.711909][T27566]  __kasan_kmalloc+0x137/0x1e0
[   56.716638][T27566]  __kmalloc+0x174/0x2f0
[   56.720848][T27566]  packet_set_ring+0x5e7/0x25a0
[   56.725669][T27566]  packet_setsockopt+0xa9b/0x3920
[   56.730660][T27566]  __sys_setsockopt+0x471/0x700
[   56.735482][T27566]  __x64_sys_setsockopt+0xb1/0xc0
[   56.740477][T27566]  do_syscall_64+0xcb/0x1e0
[   56.744947][T27566]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.750799][T27566] 
[   56.753092][T27566] Freed by task 27565:
[   56.757130][T27566]  __kasan_slab_free+0x18a/0x240
[   56.762040][T27566]  slab_free_freelist_hook+0x7b/0x150
[   56.767384][T27566]  kfree+0xe0/0x660
[   56.771158][T27566]  packet_set_ring+0x1958/0x25a0
[   56.776061][T27566]  packet_setsockopt+0xa9b/0x3920
[   56.781050][T27566]  __sys_setsockopt+0x471/0x700
[   56.785865][T27566]  __x64_sys_setsockopt+0xb1/0xc0
[   56.790903][T27566]  do_syscall_64+0xcb/0x1e0
[   56.795374][T27566]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.801232][T27566] 
[   56.803528][T27566] The buggy address belongs to the object at ffff8881eb301480
[   56.803528][T27566]  which belongs to the cache kmalloc-64 of size 64
[   56.817383][T27566] The buggy address is located 0 bytes inside of
[   56.817383][T27566]  64-byte region [ffff8881eb301480, ffff8881eb3014c0)
[   56.830794][T27566] The buggy address belongs to the page:
[   56.836395][T27566] page:ffffea0007acc040 refcount:1 mapcount:0 mapping:ffff8881f5c03180 index:0x0
[   56.845476][T27566] flags: 0x8000000000000200(slab)
[   56.850469][T27566] raw: 8000000000000200 dead000000000100 dead000000000122 ffff8881f5c03180
[   56.859019][T27566] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   56.868694][T27566] page dumped because: kasan: bad access detected
[   56.875068][T27566] page_owner tracks the page as allocated
[   56.880753][T27566] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY)
[   56.892693][T27566]  prep_new_page+0x19a/0x380
[   56.897251][T27566]  get_page_from_freelist+0x550/0x8b0
[   56.902589][T27566]  __alloc_pages_nodemask+0x2d6/0x740
[   56.907929][T27566]  alloc_slab_page+0x39/0x3e0
[   56.912581][T27566]  new_slab+0x97/0x460
[   56.916620][T27566]  ___slab_alloc+0x330/0x4c0
[   56.921176][T27566]  __kmalloc+0x1ee/0x2f0
[   56.925387][T27566]  packet_set_ring+0x5e7/0x25a0
[   56.930202][T27566]  packet_setsockopt+0xa9b/0x3920
[   56.935191][T27566]  __sys_setsockopt+0x471/0x700
[   56.940047][T27566]  __x64_sys_setsockopt+0xb1/0xc0
[   56.945038][T27566]  do_syscall_64+0xcb/0x1e0
[   56.949513][T27566]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.955374][T27566] page last free stack trace:
[   56.960017][T27566]  free_pcp_prepare+0x1a9/0x270
[   56.964835][T27566]  free_unref_page_list+0xc2/0x5a0
[   56.969920][T27566]  release_pages+0x92a/0x950
[   56.974483][T27566]  tlb_flush_mmu+0x77f/0x910
[   56.979044][T27566]  tlb_finish_mmu+0xcb/0x200
[   56.983609][T27566]  exit_mmap+0x2a6/0x4f0
[   56.987821][T27566]  __mmput+0x34/0x240
[   56.991772][T27566]  do_exit+0xb6a/0x2aa0
[   56.995895][T27566]  do_group_exit+0x15c/0x2c0
[   57.000452][T27566]  get_signal+0x150f/0x1e00
[   57.004924][T27566]  do_signal+0x3b/0x580
[   57.009048][T27566]  prepare_exit_to_usermode+0x207/0x310
[   57.014563][T27566]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.020429][T27566] 
[   57.022724][T27566] Memory state around the buggy address:
[   57.028320][T27566]  ffff8881eb301380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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[   57.036346][T27566]  ffff8881eb301400: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
[   57.044378][T27566] >ffff8881eb301480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   57.052403][T27566]                    ^
[   57.056434][T27566]  ffff8881eb301500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   57.064943][T27566]  ffff8881eb301580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   57.072965][T27566] ==================================================================
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[   57.454238][T28607] ==================================================================
[   57.462336][T28607] BUG: KASAN: double-free or invalid-free in kfree+0xe0/0x660
[   57.469759][T28607] 
[   57.472064][T28607] CPU: 0 PID: 28607 Comm: syz-executor300 Tainted: G    B             5.4.147-syzkaller-00006-g4fd09f7a7972 #0
[   57.483739][T28607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.493762][T28607] Call Trace:
[   57.497024][T28607]  dump_stack+0x18e/0x1de
[   57.501327][T28607]  ? vprintk_emit+0x385/0x400
[   57.505978][T28607]  ? kfree+0xe0/0x660
[   57.509937][T28607]  print_address_description+0x9b/0x650
[   57.515448][T28607]  ? kfree+0xe0/0x660
[   57.519399][T28607]  ? printk+0x76/0xa4
[   57.523351][T28607]  ? vprintk_emit+0x37c/0x400
[   57.527997][T28607]  ? _raw_spin_lock_irqsave+0x9a/0x190
[   57.533420][T28607]  ? kfree+0xe0/0x660
[   57.537367][T28607]  ? kfree+0xe0/0x660
[   57.541316][T28607]  kasan_report_invalid_free+0x54/0x120
[   57.546827][T28607]  __kasan_slab_free+0x10e/0x240
[   57.551740][T28607]  ? slab_free_freelist_hook+0x7b/0x150
[   57.557264][T28607]  slab_free_freelist_hook+0x7b/0x150
[   57.562615][T28607]  ? packet_set_ring+0x1830/0x25a0
[   57.567697][T28607]  kfree+0xe0/0x660
[   57.571477][T28607]  ? refcount_inc_not_zero_checked+0x146/0x200
[   57.577596][T28607]  packet_set_ring+0x1830/0x25a0
[   57.582505][T28607]  ? __local_bh_enable_ip+0x48/0x70
[   57.587670][T28607]  ? check_stack_object+0x5a/0x90
[   57.592661][T28607]  packet_setsockopt+0xa9b/0x3920
[   57.597660][T28607]  ? packet_ioctl+0x220/0x220
[   57.602309][T28607]  __sys_setsockopt+0x471/0x700
[   57.607130][T28607]  __x64_sys_setsockopt+0xb1/0xc0
[   57.612122][T28607]  do_syscall_64+0xcb/0x1e0
[   57.616599][T28607]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.622456][T28607] RIP: 0033:0x7fefcd8c1a19
[   57.626841][T28607] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48
[   57.646451][T28607] RSP: 002b:00007fefcd852318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   57.654834][T28607] RAX: ffffffffffffffda RBX: 00007fefcd9493f8 RCX: 00007fefcd8c1a19
[   57.662773][T28607] RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
[   57.670715][T28607] RBP: 00007fefcd9493f0 R08: 000000000000001c R09: 0000000000000000
[   57.678656][T28607] R10: 00000000200000c0 R11: 0000000000000246 R12: 00007fefcd917074
[   57.686597][T28607] R13: 00007fffb3b3052f R14: 00007fefcd852400 R15: 0000000000022000
[   57.694535][T28607] 
[   57.696835][T28607] Allocated by task 28603:
[   57.701220][T28607]  __kasan_kmalloc+0x137/0x1e0
[   57.705950][T28607]  __kmalloc+0x174/0x2f0
[   57.710158][T28607]  packet_set_ring+0x5e7/0x25a0
[   57.714975][T28607]  packet_setsockopt+0xa9b/0x3920
[   57.719965][T28607]  __sys_setsockopt+0x471/0x700
[   57.724787][T28607]  __x64_sys_setsockopt+0xb1/0xc0
[   57.729785][T28607]  do_syscall_64+0xcb/0x1e0
[   57.734260][T28607]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.740112][T28607] 
[   57.742411][T28607] Freed by task 28603:
[   57.746452][T28607]  __kasan_slab_free+0x18a/0x240
[   57.751392][T28607]  slab_free_freelist_hook+0x7b/0x150
[   57.756729][T28607]  kfree+0xe0/0x660
[   57.760504][T28607]  packet_set_ring+0x1958/0x25a0
[   57.765405][T28607]  packet_setsockopt+0xa9b/0x3920
[   57.770395][T28607]  __sys_setsockopt+0x471/0x700
[   57.775211][T28607]  __x64_sys_setsockopt+0xb1/0xc0
[   57.780202][T28607]  do_syscall_64+0xcb/0x1e0
[   57.784670][T28607]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.790521][T28607] 
[   57.792822][T28607] The buggy address belongs to the object at ffff8881e844c500
[   57.792822][T28607]  which belongs to the cache kmalloc-64 of size 64
[   57.806665][T28607] The buggy address is located 0 bytes inside of
[   57.806665][T28607]  64-byte region [ffff8881e844c500, ffff8881e844c540)
[   57.819637][T28607] The buggy address belongs to the page:
[   57.825235][T28607] page:ffffea0007a11300 refcount:1 mapcount:0 mapping:ffff8881f5c03180 index:0x0
[   57.834303][T28607] flags: 0x8000000000000200(slab)
[   57.839296][T28607] raw: 8000000000000200 ffffea0007a11480 0000001b0000001b ffff8881f5c03180
[   57.847843][T28607] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   57.856386][T28607] page dumped because: kasan: bad access detected
[   57.862762][T28607] page_owner tracks the page as allocated
[   57.868451][T28607] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY)
[   57.880390][T28607]  prep_new_page+0x19a/0x380
[   57.884951][T28607]  get_page_from_freelist+0x550/0x8b0
[   57.890288][T28607]  __alloc_pages_nodemask+0x2d6/0x740
[   57.895626][T28607]  alloc_slab_page+0x39/0x3e0
[   57.900264][T28607]  new_slab+0x97/0x460
[   57.904304][T28607]  ___slab_alloc+0x330/0x4c0
[   57.908857][T28607]  kmem_cache_alloc_trace+0x199/0x2b0
[   57.914196][T28607]  kernfs_fop_open+0x859/0xad0
[   57.918928][T28607]  do_dentry_open+0x7e6/0xef0
[   57.923570][T28607]  path_openat+0xfed/0x3a50
[   57.928039][T28607]  do_filp_open+0x19a/0x3a0
[   57.932507][T28607]  do_sys_open+0x2e2/0x6d0
[   57.936890][T28607]  do_syscall_64+0xcb/0x1e0
[   57.941367][T28607]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.947220][T28607] page_owner free stack trace missing
[   57.952552][T28607] 
[   57.954850][T28607] Memory state around the buggy address:
[   57.960452][T28607]  ffff8881e844c400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   57.968480][T28607]  ffff8881e844c480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   57.976509][T28607] >ffff8881e844c500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   57.984532][T28607]                    ^
[   57.988564][T28607]  ffff8881e844c580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   57.996594][T28607]  ffff8881e844c600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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[   58.004621][T28607] ==================================================================
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