[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 64.622002][ T27] audit: type=1800 audit(1582598130.619:25): pid=8835 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 64.643067][ T27] audit: type=1800 audit(1582598130.619:26): pid=8835 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 64.693033][ T27] audit: type=1800 audit(1582598130.619:27): pid=8835 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 '10.128.1.20' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.468756][ T8988] IPVS: ftp: loaded support on port[0] = 21 [ 91.502797][ T8990] BUG: unable to handle page fault for address: ffffed101863a987 [ 91.510987][ T8990] #PF: supervisor read access in kernel mode [ 91.517210][ T8990] #PF: error_code(0x0000) - not-present page [ 91.523171][ T8990] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 91.529656][ T8990] Oops: 0000 [#1] PREEMPT SMP KASAN [ 91.534840][ T8990] CPU: 1 PID: 8990 Comm: syz-executor682 Not tainted 5.6.0-rc3-syzkaller #0 [ 91.543486][ T8990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.553555][ T8990] RIP: 0010:ethnl_update_bitset32+0x1afe/0x2380 [ 91.559779][ T8990] 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 [ 91.579412][ T8990] RSP: 0018:ffffc90002fe76c0 EFLAGS: 00010a07 [ 91.585663][ T8990] RAX: 1ffff1101863a987 RBX: ffff8880c31d4c3c RCX: 0000000000000000 [ 91.593627][ T8990] RDX: dffffc0000000000 RSI: 0000000000000010 RDI: 0000000000000000 [ 91.601927][ T8990] RBP: ffffc90002fe77b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 [ 91.609888][ T8990] R10: ffff8880963ee200 R11: 0000000000000004 R12: dffffc0000000000 [ 91.617839][ T8990] R13: ffffc90002fe7ab0 R14: ffff8880a31d4c40 R15: 0000000000000010 [ 91.626180][ T8990] FS: 00007fe5a81f9700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 91.635258][ T8990] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.642437][ T8990] CR2: ffffed101863a987 CR3: 0000000094441000 CR4: 00000000001406e0 [ 91.650505][ T8990] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.658461][ T8990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.666480][ T8990] Call Trace: [ 91.669762][ T8990] ? memcpy+0x49/0x60 [ 91.673731][ T8990] ethnl_update_bitset+0x3c/0x50 [ 91.678646][ T8990] ethnl_set_linkmodes+0x5d4/0xf80 [ 91.683750][ T8990] genl_rcv_msg+0xf15/0x13e0 [ 91.688450][ T8990] netlink_rcv_skb+0x19e/0x3e0 [ 91.693199][ T8990] ? genl_unbind+0x250/0x250 [ 91.697894][ T8990] genl_rcv+0x28/0x40 [ 91.701945][ T8990] netlink_unicast+0x766/0x920 [ 91.706692][ T8990] netlink_sendmsg+0xa2b/0xd40 [ 91.711458][ T8990] ? netlink_getsockopt+0x9f0/0x9f0 [ 91.716638][ T8990] ____sys_sendmsg+0x4f7/0x7f0 [ 91.721405][ T8990] __sys_sendmsg+0x1ed/0x290 [ 91.725990][ T8990] ? check_preemption_disabled+0xb4/0x260 [ 91.731694][ T8990] ? debug_smp_processor_id+0x9/0x20 [ 91.737148][ T8990] ? __kasan_check_write+0x14/0x20 [ 91.742339][ T8990] ? __fpregs_load_activate+0x194/0x220 [ 91.748559][ T8990] ? switch_fpu_return+0xe/0x10 [ 91.753413][ T8990] ? prepare_exit_to_usermode+0x221/0x5b0 [ 91.759117][ T8990] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 91.764816][ T8990] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 91.770265][ T8990] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 91.775977][ T8990] ? do_syscall_64+0x1d/0x1c0 [ 91.780637][ T8990] __x64_sys_sendmsg+0x7f/0x90 [ 91.785395][ T8990] do_syscall_64+0xf7/0x1c0 [ 91.789908][ T8990] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.796473][ T8990] RIP: 0033:0x44b099 [ 91.800359][ T8990] Code: e8 0c d3 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 1b cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 91.820392][ T8990] RSP: 002b:00007fe5a81f8da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 91.828781][ T8990] RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 000000000044b099 [ 91.837224][ T8990] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 91.845265][ T8990] RBP: 00000000006dcc40 R08: 0000000000000004 R09: 0000000000000000 [ 91.853227][ T8990] R10: 0000000000000014 R11: 0000000000000246 R12: 00000000006dcc4c [ 91.861707][ T8990] R13: 0000000000000000 R14: 006e75745f7a7973 R15: 0000000000000000 [ 91.869792][ T8990] Modules linked in: [ 91.873718][ T8990] CR2: ffffed101863a987 [ 91.877851][ T8990] ---[ end trace 5977ed34d0dae824 ]--- [ 91.883684][ T8990] RIP: 0010:ethnl_update_bitset32+0x1afe/0x2380 [ 91.889903][ T8990] 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 [ 91.910365][ T8990] RSP: 0018:ffffc90002fe76c0 EFLAGS: 00010a07 [ 91.916662][ T8990] RAX: 1ffff1101863a987 RBX: ffff8880c31d4c3c RCX: 0000000000000000 [ 91.925063][ T8990] RDX: dffffc0000000000 RSI: 0000000000000010 RDI: 0000000000000000 [ 91.933076][ T8990] RBP: ffffc90002fe77b0 R08: ffffffff86a264c3 R09: ffffffff83bbc3c7 [ 91.941227][ T8990] R10: ffff8880963ee200 R11: 0000000000000004 R12: dffffc0000000000 [ 91.949285][ T8990] R13: ffffc90002fe7ab0 R14: ffff8880a31d4c40 R15: 0000000000000010 [ 91.957789][ T8990] FS: 00007fe5a81f9700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 91.966806][ T8990] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.973404][ T8990] CR2: ffffed101863a987 CR3: 0000000094441000 CR4: 00000000001406e0 [ 91.981367][ T8990] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.989317][ T8990] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.997272][ T8990] Kernel panic - not syncing: Fatal exception [ 92.004654][ T8990] Kernel Offset: disabled [ 92.009023][ T8990] Rebooting in 86400 seconds..