[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 46.421955][ T6852] mm ffff8880945b5100 mmap ffff8880a04a8948 seqnum 0 task_size 140737488351232 [ 46.421955][ T6852] get_unmapped_area ffffffff8129dea0 [ 46.421955][ T6852] mmap_base 140365337575424 mmap_legacy_base 47267457593344 highest_vm_end 140731132026880 [ 46.421955][ T6852] pgd ffff88809d495000 mm_users 3 mm_count 1 pgtables_bytes 40960 map_count 14 [ 46.421955][ T6852] hiwater_rss c hiwater_vm 1130 total_vm 1172 locked_vm 0 [ 46.421955][ T6852] pinned_vm 0 data_vm 106d exec_vm dc stack_vm 21 executing program executing program executing program executing program executing program executing program [ 46.421955][ T6852] start_code 400000 end_code 4d918f start_data 6d9ea8 end_data 6dbb90 [ 46.421955][ T6852] start_brk 167a000 brk 169d000 start_stack 7ffe85205660 [ 46.421955][ T6852] arg_start 7ffe85206ec5 arg_end 7ffe85206edd env_start 7ffe85206edd env_end 7ffe85206fe0 [ 46.421955][ T6852] binfmt ffffffff89544d80 flags cd core_state ffffc90001777b40 [ 46.421955][ T6852] ioctx_table 0000000000000000 [ 46.421955][ T6852] owner ffff8880a7468380 exe_file ffff8880a93b2d40 executing program executing program [ 46.544189][ T6852] ------------[ cut here ]------------ [ 46.581637][ T6852] kernel BUG at mm/khugepaged.c:469! [ 46.584536][ T6878] mm ffff88808bf87680 mmap ffff88808fc02568 seqnum 0 task_size 140737488351232 [ 46.584536][ T6878] get_unmapped_area ffffffff8129dea0 [ 46.584536][ T6878] mmap_base 140365337575424 mmap_legacy_base 47267457593344 highest_vm_end 140731132026880 [ 46.584536][ T6878] pgd ffff888097278000 mm_users 3 mm_count 1 pgtables_bytes 40960 map_count 14 [ 46.584536][ T6878] hiwater_rss c hiwater_vm 1130 total_vm 1172 locked_vm 0 [ 46.584536][ T6878] pinned_vm 0 data_vm 106d exec_vm dc stack_vm 21 [ 46.584536][ T6878] start_code 400000 end_code 4d918f start_data 6d9ea8 end_data 6dbb90 [ 46.584536][ T6878] start_brk 167a000 brk 169d000 start_stack 7ffe85205660 [ 46.584536][ T6878] arg_start 7ffe85206ec5 arg_end 7ffe85206edd env_start 7ffe85206edd env_end 7ffe85206fe0 [ 46.584536][ T6878] binfmt ffffffff89544d80 flags cd core_state ffffc90001817b40 [ 46.584536][ T6878] ioctx_table 0000000000000000 [ 46.584536][ T6878] owner ffff8880a811a400 exe_file ffff8880a93b2d40 [ 46.588997][ T6852] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 46.680865][ T6878] ------------[ cut here ]------------ [ 46.683561][ T6852] CPU: 0 PID: 6852 Comm: syz-executor729 Not tainted 5.8.0-syzkaller #0 [ 46.683566][ T6852] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.683580][ T6852] RIP: 0010:__khugepaged_enter+0x316/0x320 [ 46.683591][ T6852] Code: 03 38 c1 0f 8c 7e fd ff ff 48 89 df e8 b3 ae fc ff e9 71 fd ff ff e8 b9 d8 bc ff eb 05 e8 b2 d8 bc ff 4c 89 f7 e8 0a ca eb ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 49 89 [ 46.689078][ T6878] kernel BUG at mm/khugepaged.c:469! [ 46.697305][ T6852] RSP: 0018:ffffc90001707aa8 EFLAGS: 00010292 [ 46.697312][ T6852] RAX: 0000000000000365 RBX: ffff8880945b5640 RCX: a87539d00bd46c00 [ 46.697317][ T6852] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 46.697322][ T6852] RBP: 0000000000000000 R08: ffffffff815e2c59 R09: ffffed1015d062c0 [ 46.697326][ T6852] R10: ffffed1015d062c0 R11: 0000000000000000 R12: dffffc0000000000 [ 46.697331][ T6852] R13: dffffc0000000000 R14: ffff8880945b5100 R15: ffff888092fe9420 [ 46.697338][ T6852] FS: 00007fa95a15b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 46.697344][ T6852] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.697350][ T6852] CR2: 00007fa95a139e78 CR3: 000000009d495000 CR4: 00000000001506f0 [ 46.697358][ T6852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.697362][ T6852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.697364][ T6852] Call Trace: [ 46.697378][ T6852] do_huge_pmd_anonymous_page+0x358/0xd40 [ 46.697387][ T6852] ? rcu_lock_release+0x5/0x20 [ 46.697398][ T6852] handle_mm_fault+0x1e25/0x29a0 [ 46.697417][ T6852] do_user_addr_fault+0x515/0xa90 [ 46.846526][ T6852] exc_page_fault+0x124/0x1f0 [ 46.851186][ T6852] asm_exc_page_fault+0x1e/0x30 [ 46.856008][ T6852] RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 [ 46.862315][ T6852] Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a [ 46.881915][ T6852] RSP: 0018:ffffc90001707e38 EFLAGS: 00010206 [ 46.887978][ T6852] RAX: ffffffff839f5b01 RBX: 0000000020000031 RCX: 0000000000000006 [ 46.895917][ T6852] RDX: 0000000000000001 RSI: ffff888095324800 RDI: 0000000020000000 [ 46.903945][ T6852] RBP: 0000000000000031 R08: 312020205b3e353c R09: ffffed1012a64907 [ 46.911885][ T6852] R10: ffffed1012a64907 R11: 0000000000000000 R12: 0000000000000031 [ 46.919821][ T6852] R13: 00007ffffffff000 R14: ffff888095324800 R15: 0000000020000000 [ 46.927768][ T6852] ? _copy_to_user+0x51/0x140 [ 46.932411][ T6852] _copy_to_user+0x100/0x140 [ 46.936968][ T6852] do_syslog+0xf31/0x16e0 [ 46.941265][ T6852] ? syscall_enter_from_user_mode+0x24/0x190 [ 46.947208][ T6852] __x64_sys_syslog+0x78/0x90 [ 46.951849][ T6852] do_syscall_64+0x31/0x70 [ 46.956231][ T6852] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 46.962087][ T6852] RIP: 0033:0x4467d9 [ 46.965947][ T6852] Code: e8 0c e8 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 db 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 46.985517][ T6852] RSP: 002b:00007fa95a15adb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000067 [ 46.993890][ T6852] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004467d9 [ 47.001832][ T6852] RDX: 00000000000000ce RSI: 0000000020000000 RDI: 0000000000000003 [ 47.009782][ T6852] RBP: 00000000006dbc20 R08: 00007fa95a15b700 R09: 0000000000000000 [ 47.017719][ T6852] R10: 00007fa95a15b700 R11: 0000000000000246 R12: 00000000006dbc2c [ 47.025655][ T6852] R13: 00007ffe8520542f R14: 00007fa95a15b9c0 R15: 000000000000002d [ 47.033595][ T6852] Modules linked in: [ 47.037507][ T6878] invalid opcode: 0000 [#2] PREEMPT SMP KASAN [ 47.043598][ T6878] CPU: 1 PID: 6878 Comm: syz-executor729 Tainted: G D 5.8.0-syzkaller #0 [ 47.047384][ T6852] ---[ end trace a51a5a7c5a3fe671 ]--- [ 47.053287][ T6878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.053303][ T6878] RIP: 0010:__khugepaged_enter+0x316/0x320 [ 47.053311][ T6878] Code: 03 38 c1 0f 8c 7e fd ff ff 48 89 df e8 b3 ae fc ff e9 71 fd ff ff e8 b9 d8 bc ff eb 05 e8 b2 d8 bc ff 4c 89 f7 e8 0a ca eb ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 49 89 [ 47.053316][ T6878] RSP: 0018:ffffc900017d7aa8 EFLAGS: 00010292 [ 47.058797][ T6852] RIP: 0010:__khugepaged_enter+0x316/0x320 [ 47.068778][ T6878] RAX: 0000000000000365 RBX: ffff88808bf87bc0 RCX: 491bd609c0d84500 [ 47.068784][ T6878] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 47.068789][ T6878] RBP: 0000000000000000 R08: ffffffff815e2c59 R09: ffffed1015d262c0 [ 47.068794][ T6878] R10: ffffed1015d262c0 R11: 0000000000000000 R12: dffffc0000000000 [ 47.068799][ T6878] R13: dffffc0000000000 R14: ffff88808bf87680 R15: ffff888092fe9790 [ 47.068805][ T6878] FS: 00007fa95a15b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.068815][ T6878] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.074626][ T6852] Code: 03 38 c1 0f 8c 7e fd ff ff 48 89 df e8 b3 ae fc ff e9 71 fd ff ff e8 b9 d8 bc ff eb 05 e8 b2 d8 bc ff 4c 89 f7 e8 0a ca eb ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 49 89 [ 47.094157][ T6878] CR2: 00007f4d48a6d000 CR3: 0000000097278000 CR4: 00000000001506e0 [ 47.094166][ T6878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 executing program executing program executing program [ 47.094171][ T6878] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.094173][ T6878] Call Trace: [ 47.094188][ T6878] do_huge_pmd_anonymous_page+0x358/0xd40 [ 47.094201][ T6878] ? rcu_lock_release+0x5/0x20 [ 47.100669][ T6852] RSP: 0018:ffffc90001707aa8 EFLAGS: 00010292 [ 47.106008][ T6878] handle_mm_fault+0x1e25/0x29a0 [ 47.106029][ T6878] do_user_addr_fault+0x515/0xa90 executing program executing program executing program executing program executing program executing program [ 47.106042][ T6878] exc_page_fault+0x124/0x1f0 [ 47.114050][ T6852] RAX: 0000000000000365 RBX: ffff8880945b5640 RCX: a87539d00bd46c00 [ 47.121931][ T6878] asm_exc_page_fault+0x1e/0x30 [ 47.121942][ T6878] RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 executing program [ 47.121949][ T6878] Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a [ 47.121958][ T6878] RSP: 0018:ffffc900017d7e38 EFLAGS: 00010203 [ 47.130188][ T6852] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 47.138047][ T6878] RAX: ffffffff839f5b01 RBX: 000000002000003f RCX: 0000000000000007 executing program executing program executing program [ 47.138052][ T6878] RDX: 0000000000000007 RSI: ffff88809ecc6800 RDI: 0000000020000000 [ 47.138057][ T6878] RBP: 000000000000003f R08: 342020205b3e343c R09: ffffed1013d98d08 [ 47.138062][ T6878] R10: ffffed1013d98d08 R11: 0000000000000000 R12: 000000000000003f [ 47.138067][ T6878] R13: 00007ffffffff000 R14: ffff88809ecc6800 R15: 0000000020000000 [ 47.138082][ T6878] ? _copy_to_user+0x51/0x140 [ 47.138094][ T6878] _copy_to_user+0x100/0x140 executing program executing program executing program executing program executing program [ 47.146130][ T6852] RBP: 0000000000000000 R08: ffffffff815e2c59 R09: ffffed1015d062c0 [ 47.155040][ T6878] do_syslog+0xf31/0x16e0 [ 47.155055][ T6878] ? syscall_enter_from_user_mode+0x24/0x190 [ 47.155064][ T6878] __x64_sys_syslog+0x78/0x90 [ 47.155075][ T6878] do_syscall_64+0x31/0x70 [ 47.161683][ T6852] R10: ffffed1015d062c0 R11: 0000000000000000 R12: dffffc0000000000 [ 47.181260][ T6878] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.181270][ T6878] RIP: 0033:0x4467d9 [ 47.181280][ T6878] Code: e8 0c e8 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 db 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 47.181284][ T6878] RSP: 002b:00007fa95a15adb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000067 [ 47.181292][ T6878] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004467d9 [ 47.181296][ T6878] RDX: 00000000000000ce RSI: 0000000020000000 RDI: 0000000000000003 [ 47.181306][ T6878] RBP: 00000000006dbc20 R08: 00007fa95a15b700 R09: 0000000000000000 [ 47.189303][ T6852] R13: dffffc0000000000 R14: ffff8880945b5100 R15: ffff888092fe9420 [ 47.197280][ T6878] R10: 00007fa95a15b700 R11: 0000000000000246 R12: 00000000006dbc2c [ 47.197285][ T6878] R13: 00007ffe8520542f R14: 00007fa95a15b9c0 R15: 000000000000002d [ 47.197294][ T6878] Modules linked in: [ 47.333351][ T6878] ---[ end trace a51a5a7c5a3fe672 ]--- [ 47.351613][ T6852] FS: 00007fa95a15b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 47.373653][ T6878] RIP: 0010:__khugepaged_enter+0x316/0x320 [ 47.393482][ T6852] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.410857][ T6878] Code: 03 38 c1 0f 8c 7e fd ff ff 48 89 df e8 b3 ae fc ff e9 71 fd ff ff e8 b9 d8 bc ff eb 05 e8 b2 d8 bc ff 4c 89 f7 e8 0a ca eb ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 49 89 [ 47.428569][ T6852] CR2: 0000000020000000 CR3: 000000009d495000 CR4: 00000000001506f0 [ 47.435446][ T6878] RSP: 0018:ffffc90001707aa8 EFLAGS: 00010292 [ 47.441545][ T6852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.446686][ T6878] RAX: 0000000000000365 RBX: ffff8880945b5640 RCX: a87539d00bd46c00 [ 47.472885][ T6852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.518312][ T6923] mm ffff88809f60f100 mmap ffff8880a7021b98 seqnum 0 task_size 140737488351232 [ 47.518312][ T6923] get_unmapped_area ffffffff8129dea0 [ 47.518312][ T6923] mmap_base 140365337575424 mmap_legacy_base 47267457593344 highest_vm_end 140731132026880 [ 47.518312][ T6923] pgd ffff8880a1f46000 mm_users 3 mm_count 1 pgtables_bytes 40960 map_count 14 [ 47.518312][ T6923] hiwater_rss c hiwater_vm 1130 total_vm 1172 locked_vm 0 [ 47.518312][ T6923] pinned_vm 0 data_vm 106d exec_vm dc stack_vm 21 [ 47.518312][ T6923] start_code 400000 end_code 4d918f start_data 6d9ea8 end_data 6dbb90 [ 47.518312][ T6923] start_brk 167a000 brk 169d000 start_stack 7ffe85205660 [ 47.518312][ T6923] arg_start 7ffe85206ec5 arg_end 7ffe85206edd env_start 7ffe85206edd env_end 7ffe85206fe0 [ 47.518312][ T6923] binfmt ffffffff89544d80 flags cd core_state ffffc90001927b40 [ 47.518312][ T6923] ioctx_table 0000000000000000 [ 47.518312][ T6923] owner ffff88809111e300 exe_file ffff8880a93b2d40 [ 47.526687][ T6852] Kernel panic - not syncing: Fatal exception [ 47.534044][ T6923] ------------[ cut here ]------------ [ 47.541673][ T6852] Kernel Offset: disabled [ 47.749774][ T6852] Rebooting in 86400 seconds..