[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.208' (ECDSA) to the list of known hosts. syzkaller login: [ 59.306039][ T6842] IPVS: ftp: loaded support on port[0] = 21 [ 59.306045][ T6846] IPVS: ftp: loaded support on port[0] = 21 [ 59.315933][ T6847] IPVS: ftp: loaded support on port[0] = 21 [ 59.324088][ T6844] IPVS: ftp: loaded support on port[0] = 21 [ 59.325717][ T6845] IPVS: ftp: loaded support on port[0] = 21 [ 59.333631][ T6848] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.249217][T10019] ------------[ cut here ]------------ [ 67.254720][T10019] kernel BUG at fs/inode.c:1668! [ 67.263530][T10023] ------------[ cut here ]------------ [ 67.269020][T10023] ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 [ 67.277595][T10023] WARNING: CPU: 0 PID: 10023 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 67.287135][T10023] Modules linked in: [ 67.291048][T10023] CPU: 0 PID: 10023 Comm: syz-executor630 Not tainted 5.9.0-rc2-next-20200824-syzkaller #0 [ 67.297022][T10019] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 67.301020][T10023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.307071][T10019] CPU: 1 PID: 10019 Comm: syz-executor630 Not tainted 5.9.0-rc2-next-20200824-syzkaller #0 [ 67.317104][T10023] RIP: 0010:debug_print_object+0x160/0x250 [ 67.327038][T10019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.332824][T10023] Code: dd 60 52 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 60 52 94 88 48 c7 c7 c0 47 94 88 e8 8b e9 a4 fd <0f> 0b 83 05 a3 6d 1b 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 67.342853][T10019] RIP: 0010:iput+0x64/0x70 [ 67.362421][T10023] RSP: 0018:ffffc9000e5afdd0 EFLAGS: 00010082 [ 67.366802][T10019] Code: ff 83 e3 40 48 89 de e8 2a ce ad ff 48 85 db 75 14 e8 80 d1 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 71 d1 ad ff e8 6c d1 ad ff <0f> 0b e8 e5 ea ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd [ 67.372856][T10019] RSP: 0018:ffffc9000e46fe10 EFLAGS: 00010293 [ 67.392430][T10023] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 67.398475][T10023] RDX: ffff888090c70200 RSI: ffffffff815da427 RDI: fffff52001cb5fac [ 67.406431][T10019] RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c6a156 [ 67.414373][T10023] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620f8b [ 67.422316][T10019] RDX: ffff888099de2000 RSI: ffffffff81c6a174 RDI: 0000000000000007 [ 67.430267][T10023] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89c67440 [ 67.438226][T10019] RBP: ffff888085ad80c0 R08: 0000000000000001 R09: ffff88809cf0a1e3 [ 67.446191][T10023] R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000 [ 67.454162][T10019] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 67.462114][T10023] FS: 00007f997b4c0700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 67.470073][T10019] R13: ffff888085ad8020 R14: ffff888085ad80c0 R15: ffff888087f6e178 [ 67.478980][T10023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.486923][T10019] FS: 00000000021ce940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 67.493493][T10023] CR2: 00007f997b49edb8 CR3: 00000000a1103000 CR4: 00000000001506f0 [ 67.502411][T10019] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.510352][T10023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.516916][T10019] CR2: 00007f997b4bfdb8 CR3: 000000008bee3000 CR4: 00000000001506e0 [ 67.524869][T10023] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.532812][T10019] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.540752][T10023] Call Trace: [ 67.548712][T10019] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.551982][T10023] debug_check_no_obj_freed+0x301/0x41c [ 67.559907][T10019] Call Trace: [ 67.565430][T10023] kmem_cache_free.part.0+0x16d/0x1f0 [ 67.568687][T10019] __sock_release+0x20c/0x280 [ 67.574026][T10023] task_work_run+0xdd/0x190 [ 67.578668][T10019] sock_close+0x18/0x20 [ 67.583157][T10023] exit_to_user_mode_prepare+0x195/0x1c0 [ 67.587283][T10019] __fput+0x285/0x920 [ 67.592896][T10023] syscall_exit_to_user_mode+0x59/0x2b0 [ 67.597321][T10019] ? __sock_release+0x280/0x280 [ 67.602838][T10023] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.607659][T10019] task_work_run+0xdd/0x190 [ 67.613531][T10023] RIP: 0033:0x447579 [ 67.618027][T10019] exit_to_user_mode_prepare+0x195/0x1c0 [ 67.621922][T10023] Code: e8 3c e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 67.627532][T10019] syscall_exit_to_user_mode+0x59/0x2b0 [ 67.648490][T10023] RSP: 002b:00007f997b4bfce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 67.654011][T10019] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.654025][T10019] RIP: 0033:0x4062c1 [ 67.662403][T10023] RAX: 0000000000000000 RBX: 00000000006ddc48 RCX: 0000000000447579 [ 67.668264][T10019] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 67.672131][T10023] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 [ 67.680084][T10019] RSP: 002b:00007fff026337c0 EFLAGS: 00000293 [ 67.699659][T10023] RBP: 00000000006ddc40 R08: 0000000000000000 R09: 0000000000000000 [ 67.707599][T10019] ORIG_RAX: 0000000000000003 [ 67.713634][T10023] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006ddc4c [ 67.721576][T10019] RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00000000004062c1 [ 67.726232][T10023] R13: 00007fff0263374f R14: 00007f997b4c09c0 R15: 0000000000000000 [ 67.734176][T10019] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 67.742136][T10023] Kernel panic - not syncing: panic_on_warn set ... [ 67.750089][T10019] RBP: 00000000006ddc5c R08: 0000000000000000 R09: 0000000000000000 [ 67.772535][T10019] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006ddc60 [ 67.780484][T10019] R13: 0000000000000001 R14: 20c49ba5e353f7cf R15: 0000000000000007 [ 67.788434][T10019] Modules linked in: [ 67.793567][T10023] Kernel Offset: disabled [ 67.797923][T10023] Rebooting in 86400 seconds..