[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 50.717016][ T26] audit: type=1800 audit(1582593330.380:25): pid=8587 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 50.743188][ T26] audit: type=1800 audit(1582593330.380:26): pid=8587 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 50.794795][ T26] audit: type=1800 audit(1582593330.380:27): pid=8587 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.25' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 61.006068][ T8739] IPVS: ftp: loaded support on port[0] = 21 [ 61.058171][ T8747] BUG: unable to handle page fault for address: ffffed101834c407 [ 61.065906][ T8747] #PF: supervisor read access in kernel mode [ 61.072214][ T8747] #PF: error_code(0x0000) - not-present page [ 61.078210][ T8747] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 61.084835][ T8747] Oops: 0000 [#1] PREEMPT SMP KASAN [ 61.090009][ T8747] CPU: 1 PID: 8747 Comm: syz-executor902 Not tainted 5.6.0-rc3-syzkaller #0 [ 61.098835][ T8747] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.108881][ T8747] RIP: 0010:ethnl_update_bitset32+0x1afe/0x2380 [ 61.115122][ T8747] Code: 24 30 44 89 fe 83 e6 1f 31 ff e8 6d a8 d4 fa 41 83 e7 1f 74 44 48 85 db 74 3f 48 8b 44 24 50 49 8d 1c 86 48 89 d8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 06 07 00 00 8b 1b 4c 89 f9 f6 d9 d3 e3 d3 [ 61.134718][ T8747] RSP: 0018:ffffc90001f776c0 EFLAGS: 00010a03 [ 61.140943][ T8747] RAX: 1ffff1101834c407 RBX: ffff8880c1a6203c RCX: 0000000000000000 [ 61.148903][ T8747] RDX: dffffc0000000000 RSI: 000000000000001f RDI: 0000000000000000 [ 61.156851][ T8747] RBP: ffffc90001f777b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 [ 61.164805][ T8747] R10: ffff8880a6e42140 R11: 0000000000000004 R12: dffffc0000000000 [ 61.172840][ T8747] R13: ffffc90001f77ab0 R14: ffff8880a1a62040 R15: 000000000000001f [ 61.180792][ T8747] FS: 0000000000c83880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 61.189730][ T8747] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.197244][ T8747] CR2: ffffed101834c407 CR3: 000000009a257000 CR4: 00000000001406e0 [ 61.205206][ T8747] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.213161][ T8747] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.221198][ T8747] Call Trace: [ 61.224475][ T8747] ? memcpy+0x49/0x60 [ 61.228437][ T8747] ethnl_update_bitset+0x3c/0x50 [ 61.233351][ T8747] ethnl_set_linkmodes+0x5d4/0xf80 [ 61.238449][ T8747] genl_rcv_msg+0xf15/0x13e0 [ 61.243038][ T8747] netlink_rcv_skb+0x19e/0x3e0 [ 61.247794][ T8747] ? genl_unbind+0x250/0x250 [ 61.252380][ T8747] genl_rcv+0x28/0x40 [ 61.256357][ T8747] netlink_unicast+0x766/0x920 [ 61.261210][ T8747] netlink_sendmsg+0xa2b/0xd40 [ 61.265969][ T8747] ? netlink_getsockopt+0x9f0/0x9f0 [ 61.271157][ T8747] ____sys_sendmsg+0x4f7/0x7f0 [ 61.275923][ T8747] __sys_sendmsg+0x1ed/0x290 [ 61.280494][ T8747] ? check_preemption_disabled+0xb4/0x260 [ 61.286185][ T8747] ? debug_smp_processor_id+0x9/0x20 [ 61.291447][ T8747] ? __kasan_check_write+0x14/0x20 [ 61.296544][ T8747] ? __fpregs_load_activate+0x194/0x220 [ 61.302066][ T8747] ? switch_fpu_return+0xe/0x10 [ 61.306892][ T8747] ? prepare_exit_to_usermode+0x221/0x5b0 [ 61.312675][ T8747] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.318124][ T8747] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 61.323834][ T8747] ? do_syscall_64+0x1d/0x1c0 [ 61.328679][ T8747] __x64_sys_sendmsg+0x7f/0x90 [ 61.333422][ T8747] do_syscall_64+0xf7/0x1c0 [ 61.337926][ T8747] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.343799][ T8747] RIP: 0033:0x445b39 [ 61.347863][ T8747] Code: e8 ac cb 02 00 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 ab cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.367456][ T8747] RSP: 002b:00007ffc299d4da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.375862][ T8747] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000445b39 [ 61.383820][ T8747] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 61.391989][ T8747] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000bb1414ac [ 61.399958][ T8747] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000ee49 [ 61.407925][ T8747] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 61.415902][ T8747] Modules linked in: [ 61.419883][ T8747] CR2: ffffed101834c407 [ 61.424020][ T8747] ---[ end trace fa3565d4bf65106b ]--- [ 61.429459][ T8747] RIP: 0010:ethnl_update_bitset32+0x1afe/0x2380 [ 61.435691][ T8747] Code: 24 30 44 89 fe 83 e6 1f 31 ff e8 6d a8 d4 fa 41 83 e7 1f 74 44 48 85 db 74 3f 48 8b 44 24 50 49 8d 1c 86 48 89 d8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 06 07 00 00 8b 1b 4c 89 f9 f6 d9 d3 e3 d3 [ 61.455383][ T8747] RSP: 0018:ffffc90001f776c0 EFLAGS: 00010a03 [ 61.461539][ T8747] RAX: 1ffff1101834c407 RBX: ffff8880c1a6203c RCX: 0000000000000000 [ 61.469497][ T8747] RDX: dffffc0000000000 RSI: 000000000000001f RDI: 0000000000000000 [ 61.477470][ T8747] RBP: ffffc90001f777b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 [ 61.485428][ T8747] R10: ffff8880a6e42140 R11: 0000000000000004 R12: dffffc0000000000 [ 61.493377][ T8747] R13: ffffc90001f77ab0 R14: ffff8880a1a62040 R15: 000000000000001f [ 61.501344][ T8747] FS: 0000000000c83880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 61.510267][ T8747] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.518073][ T8747] CR2: ffffed101834c407 CR3: 000000009a257000 CR4: 00000000001406e0 [ 61.526056][ T8747] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.534398][ T8747] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.542358][ T8747] Kernel panic - not syncing: Fatal exception [ 61.549765][ T8747] Kernel Offset: disabled [ 61.554142][ T8747] Rebooting in 86400 seconds..