[ 77.092286][ T27] audit: type=1800 audit(1583016767.862:24): pid=9650 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 77.956616][ T27] audit: type=1800 audit(1583016768.832:25): pid=9650 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.992151][ T27] audit: type=1800 audit(1583016768.832:26): pid=9650 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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 '10.128.0.9' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 89.185378][ T9804] IPVS: ftp: loaded support on port[0] = 21 [ 89.232967][ T9807] BUG: unable to handle page fault for address: ffffed1018d45987 [ 89.240768][ T9807] #PF: supervisor read access in kernel mode [ 89.246731][ T9807] #PF: error_code(0x0000) - not-present page [ 89.252688][ T9807] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 89.259182][ T9807] Oops: 0000 [#1] PREEMPT SMP KASAN [ 89.264374][ T9807] CPU: 1 PID: 9807 Comm: syz-executor304 Not tainted 5.6.0-rc3-syzkaller #0 [ 89.273033][ T9807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.283097][ T9807] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 89.289850][ T9807] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 89.309449][ T9807] RSP: 0018:ffffc90005987238 EFLAGS: 00010a07 [ 89.315498][ T9807] RAX: dffffc0000000000 RBX: ffff8880a6a2cc3c RCX: ffffffff867055d4 [ 89.323464][ T9807] RDX: 1ffff11018d45987 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 89.331419][ T9807] RBP: ffffc900059873a0 R08: ffff888097382340 R09: ffffc90005987308 [ 89.339374][ T9807] R10: fffff52000b30e66 R11: ffffc90005987337 R12: 0000000000000010 [ 89.347335][ T9807] R13: ffff8880c6a2cc3c R14: ffff8880a6a2cc4c R15: ffffc90005987378 [ 89.355302][ T9807] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:00000000085c4840 [ 89.364217][ T9807] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 89.370911][ T9807] CR2: ffffed1018d45987 CR3: 00000000a7863000 CR4: 00000000001406e0 [ 89.378918][ T9807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.386929][ T9807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.394882][ T9807] Call Trace: [ 89.398156][ T9807] ? __mutex_lock+0x458/0x13c0 [ 89.402899][ T9807] ? lock_downgrade+0x920/0x920 [ 89.407735][ T9807] ? ethnl_bitmap32_clear+0x390/0x390 [ 89.413121][ T9807] ? mutex_trylock+0x2d0/0x2d0 [ 89.417868][ T9807] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 89.424090][ T9807] ? ethnl_default_notify+0x6b0/0x6b0 [ 89.429447][ T9807] ethnl_update_bitset+0x4d/0x67 [ 89.434372][ T9807] ethnl_set_linkmodes+0x461/0xc30 [ 89.439464][ T9807] ? __kasan_check_read+0x11/0x20 [ 89.444480][ T9807] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 89.450012][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.456369][ T9807] ? kernel_text_address+0xe9/0x110 [ 89.461554][ T9807] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 89.467010][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.473242][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.479485][ T9807] ? security_capable+0x95/0xc0 [ 89.484331][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.490678][ T9807] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 89.496999][ T9807] genl_rcv_msg+0x67d/0xea0 [ 89.501640][ T9807] ? genl_rcv_msg+0x67d/0xea0 [ 89.506321][ T9807] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 89.512676][ T9807] ? __kasan_check_read+0x11/0x20 [ 89.517696][ T9807] ? __lock_acquire+0x8a0/0x4a00 [ 89.522686][ T9807] ? find_held_lock+0x35/0x130 [ 89.527439][ T9807] netlink_rcv_skb+0x177/0x450 [ 89.532347][ T9807] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 89.538665][ T9807] ? netlink_ack+0xb50/0xb50 [ 89.543240][ T9807] ? __kasan_check_write+0x14/0x20 [ 89.548346][ T9807] ? netlink_deliver_tap+0x248/0xbf0 [ 89.553633][ T9807] genl_rcv+0x29/0x40 [ 89.557664][ T9807] netlink_unicast+0x59e/0x7e0 [ 89.562424][ T9807] ? netlink_attachskb+0x870/0x870 [ 89.567532][ T9807] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 89.573240][ T9807] ? __check_object_size+0x3d/0x437 [ 89.578498][ T9807] netlink_sendmsg+0x91c/0xea0 [ 89.583252][ T9807] ? netlink_unicast+0x7e0/0x7e0 [ 89.588348][ T9807] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 89.593884][ T9807] ? apparmor_socket_sendmsg+0x2a/0x30 [ 89.599344][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.605594][ T9807] ? security_socket_sendmsg+0x8d/0xc0 [ 89.611067][ T9807] ? netlink_unicast+0x7e0/0x7e0 [ 89.616020][ T9807] sock_sendmsg+0xd7/0x130 [ 89.620612][ T9807] ____sys_sendmsg+0x753/0x880 [ 89.625374][ T9807] ? kernel_sendmsg+0x50/0x50 [ 89.630048][ T9807] ? debug_object_active_state+0x28a/0x350 [ 89.635840][ T9807] ? find_held_lock+0x35/0x130 [ 89.640652][ T9807] ___sys_sendmsg+0x100/0x170 [ 89.645344][ T9807] ? sendmsg_copy_msghdr+0x70/0x70 [ 89.650485][ T9807] ? lockdep_hardirqs_on+0x421/0x5e0 [ 89.655752][ T9807] ? __kasan_check_read+0x11/0x20 [ 89.660753][ T9807] ? mark_lock+0xc2/0x1220 [ 89.665153][ T9807] ? __kasan_check_read+0x11/0x20 [ 89.670170][ T9807] ? __lock_acquire+0x16f2/0x4a00 [ 89.675184][ T9807] ? debug_object_deactivate+0x320/0x320 [ 89.680800][ T9807] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 89.686960][ T9807] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.693200][ T9807] ? __fget_light+0x1ad/0x270 [ 89.697866][ T9807] ? __fdget+0x1b/0x20 [ 89.701915][ T9807] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.708165][ T9807] __sys_sendmsg+0x105/0x1d0 [ 89.712798][ T9807] ? __sys_sendmsg_sock+0xc0/0xc0 [ 89.717808][ T9807] ? lockdep_hardirqs_on+0x421/0x5e0 [ 89.723090][ T9807] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 89.728535][ T9807] ? do_fast_syscall_32+0xd1/0xe16 [ 89.733628][ T9807] ? entry_SYSENTER_compat+0x70/0x7f [ 89.738892][ T9807] ? do_fast_syscall_32+0xd1/0xe16 [ 89.744059][ T9807] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 89.749512][ T9807] do_fast_syscall_32+0x27b/0xe16 [ 89.754528][ T9807] entry_SYSENTER_compat+0x70/0x7f [ 89.759669][ T9807] RIP: 0023:0xf7f3fe39 [ 89.763721][ T9807] Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 89.783430][ T9807] RSP: 002b:00000000ff8f77fc EFLAGS: 00000282 ORIG_RAX: 0000000000000172 [ 89.791839][ T9807] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000240 [ 89.801722][ T9807] RDX: 0000000000000000 RSI: 00000000ff8f786e RDI: 0000000000000001 [ 89.809688][ T9807] RBP: 00000000000000c2 R08: 0000000000000000 R09: 0000000000000000 [ 89.817696][ T9807] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 89.825661][ T9807] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 89.833742][ T9807] Modules linked in: [ 89.837624][ T9807] CR2: ffffed1018d45987 [ 89.841813][ T9807] ---[ end trace 5a3c7a4486320b8d ]--- [ 89.847316][ T9807] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 89.854332][ T9807] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 89.874502][ T9807] RSP: 0018:ffffc90005987238 EFLAGS: 00010a07 [ 89.880607][ T9807] RAX: dffffc0000000000 RBX: ffff8880a6a2cc3c RCX: ffffffff867055d4 [ 89.888611][ T9807] RDX: 1ffff11018d45987 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 89.896618][ T9807] RBP: ffffc900059873a0 R08: ffff888097382340 R09: ffffc90005987308 [ 89.904573][ T9807] R10: fffff52000b30e66 R11: ffffc90005987337 R12: 0000000000000010 [ 89.912538][ T9807] R13: ffff8880c6a2cc3c R14: ffff8880a6a2cc4c R15: ffffc90005987378 [ 89.920494][ T9807] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:00000000085c4840 [ 89.929403][ T9807] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 89.935965][ T9807] CR2: ffffed1018d45987 CR3: 00000000a7863000 CR4: 00000000001406e0 [ 89.943937][ T9807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.951931][ T9807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.959896][ T9807] Kernel panic - not syncing: Fatal exception [ 89.967106][ T9807] Kernel Offset: disabled [ 89.971435][ T9807] Rebooting in 86400 seconds..