[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.056408] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.359072] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 19.658123] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 20.460960] random: sshd: uninitialized urandom read (32 bytes read, 82 bits of entropy available) [ 20.653912] random: sshd: uninitialized urandom read (32 bytes read, 86 bits of entropy available) Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. [ 26.039615] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available) executing program [ 26.141078] ================================================================== [ 26.148475] BUG: KASAN: use-after-free in __lock_acquire+0x387e/0x4b50 [ 26.155118] Read of size 8 at addr ffff8800b4a16ab8 by task syzkaller897097/3318 [ 26.162615] [ 26.164216] CPU: 1 PID: 3318 Comm: syzkaller897097 Not tainted 4.4.111-g3301b55 #24 [ 26.171978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.181561] 0000000000000000 b9f2585620965bc9 ffff8801cd7cf8d0 ffffffff81d0509d [ 26.189529] ffffea0002d28580 ffff8800b4a16ab8 0000000000000000 ffff8800b4a16ab8 [ 26.197484] 0000000000000000 ffff8801cd7cf908 ffffffff814fd433 ffff8800b4a16ab8 [ 26.205435] Call Trace: [ 26.207989] [] dump_stack+0xc1/0x124 [ 26.213326] [] print_address_description+0x73/0x260 [ 26.219958] [] kasan_report+0x285/0x370 [ 26.225560] [] ? __lock_acquire+0x387e/0x4b50 [ 26.231688] [] __asan_report_load8_noabort+0x14/0x20 [ 26.238421] [] __lock_acquire+0x387e/0x4b50 [ 26.244386] [] ? __lock_acquire+0xb5f/0x4b50 [ 26.244392] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 26.244399] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 26.244408] [] ? mark_held_locks+0xaf/0x100 [ 26.244413] [] lock_acquire+0x15e/0x460 [ 26.244422] [] ? remove_wait_queue+0x14/0x40 [ 26.244429] [] _raw_spin_lock_irqsave+0x4e/0x70 [ 26.244434] [] ? remove_wait_queue+0x14/0x40 [ 26.244439] [] remove_wait_queue+0x14/0x40 [ 26.244446] [] ep_unregister_pollwait.isra.6+0xa8/0x220 [ 26.244453] [] ? ep_unregister_pollwait.isra.6+0x114/0x220 [ 26.244458] [] ? ep_free+0x1c0/0x1c0 [ 26.244464] [] ep_free+0x93/0x1c0 [ 26.244469] [] ? ep_free+0x1c0/0x1c0 [ 26.244475] [] ep_eventpoll_release+0x44/0x60 [ 26.244481] [] __fput+0x233/0x6d0 [ 26.244486] [] ____fput+0x15/0x20 [ 26.244494] [] task_work_run+0x104/0x180 [ 26.244501] [] do_exit+0x871/0x2a20 [ 26.244508] [] ? release_task+0x1240/0x1240 [ 26.244514] [] ? SyS_epoll_create+0x190/0x190 [ 26.244520] [] do_group_exit+0x108/0x320 [ 26.244527] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 26.244532] [] SyS_exit_group+0x1d/0x20 [ 26.244538] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 26.244541] [ 26.244545] Allocated by task 3318: [ 26.244555] [] save_stack_trace+0x26/0x50 [ 26.244564] [] save_stack+0x43/0xd0 [ 26.244571] [] kasan_kmalloc+0xad/0xe0 [ 26.244578] [] kmem_cache_alloc_trace+0x100/0x2b0 [ 26.244587] [] binder_get_thread+0x181/0x7a0 [ 26.244593] [] binder_poll+0x4a/0x210 [ 26.244600] [] SyS_epoll_ctl+0x10b1/0x2050 [ 26.244606] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 26.244607] [ 26.244609] Freed by task 3318: [ 26.244616] [] save_stack_trace+0x26/0x50 [ 26.244622] [] save_stack+0x43/0xd0 [ 26.244628] [] kasan_slab_free+0x72/0xc0 [ 26.244634] [] kfree+0xfc/0x300 [ 26.244640] [] binder_thread_dec_tmpref+0x1c1/0x250 [ 26.244647] [] binder_thread_release+0x27d/0x540 [ 26.244653] [] binder_ioctl+0xb94/0x12e0 [ 26.244660] [] do_vfs_ioctl+0x7aa/0xee0 [ 26.244666] [] SyS_ioctl+0x8f/0xc0 [ 26.244672] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 26.244673] [ 26.244678] The buggy address belongs to the object at ffff8800b4a16a00 [ 26.244678] which belongs to the cache kmalloc-512 of size 512 [ 26.244682] The buggy address is located 184 bytes inside of [ 26.244682] 512-byte region [ffff8800b4a16a00, ffff8800b4a16c00) [ 26.244684] The buggy address belongs to the page: [ 26.545642] kasan: CONFIG_KASAN_INLINE enabled [ 26.551088] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.562088] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.572865] kasan: GPF could be caused by NULL-ptr deref or user memory accesskasan: CONFIG_KASAN_INLINE enabled [ 26.583786] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 26.596896] Dumping ftrace buffer: [ 26.600418] (ftrace buffer empty) [ 26.604112] Modules linked in: [ 26.607415] CPU: 0 PID: 3322 Comm: init Not tainted 4.4.111-g3301b55 #24 [ 26.614243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.623589] task: ffff8801d137df00 task.stack: ffff8800b1450000 [ 26.629640] RIP: 0010:[] [] avc_has_perm_noaudit+0x1bb/0x460 [ 26.638789] RSP: 0018:ffff8800b1457970 EFLAGS: 00010202 [ 26.644223] RAX: 000000009ffffffb RBX: 00000004ffffffd9 RCX: ffffffff81b4d324 [ 26.651487] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8801d137e76c [ 26.658748] RBP: ffff8800b1457a40 R08: 0000000000000001 R09: 0000000000000000 [ 26.666008] R10: 0000000000000000 R11: 1ffff1001628aefa R12: dffffc0000000000 [ 26.673269] R13: 0000000000000001 R14: ffff8800b1457a80 R15: 0000000000000007 [ 26.680530] FS: 00007f24021517a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 26.688748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.694793] CR2: 0000000000608340 CR3: 00000000b4bf4000 CR4: 0000000000160670 [ 26.702060] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.709491] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.716905] Stack: [ 26.719051] ffffffff81b4d212 ffff8800b1457b30 0000000700000000 1ffff1001628af33 [ 26.727158] 0000002600400000 0000000041b58ab3 ffffffff83fc7cae ffffffff81b4d170 [ 26.735177] ffff8800b1457ae8 ffff8800b1457b28 0000000041b58ab3 ffffffff83fbf22c [ 26.743193] Call Trace: [ 26.745767] [] ? avc_has_perm_noaudit+0xa2/0x460 [ 26.752167] [] ? avc_has_extended_perms+0xf30/0xf30 [ 26.758833] [] ? trailing_symlink+0xcf0/0xcf0 [ 26.764981] [] ? __module_text_address+0x13/0x140 [ 26.771472] [] ? pick_link+0x231/0xa50 [ 26.780919] [] selinux_inode_permission+0x281/0x4b0 [ 26.787582] [] ? selinux_bprm_committed_creds+0x440/0x440 [ 26.794776] [] ? follow_dotdot_rcu+0xb50/0xb50 [ 26.802753] [] security_inode_permission+0xaf/0xf0 [ 26.809351] [] __inode_permission2+0x93/0x240 [ 26.815499] [] inode_permission2+0x2f/0x100 [ 26.821466] [] link_path_walk+0x1ac/0x16e0 [ 26.827344] [] ? walk_component+0xff0/0xff0 [ 26.833317] [] ? new_slab+0x2df/0x3b0 [ 26.838765] [] path_lookupat+0x6a/0x3f0 [ 26.844393] [] filename_lookup+0x197/0x3b0 [ 26.850275] [] ? filename_parentat+0x3f0/0x3f0 [ 26.856501] [] ? strncpy_from_user+0x203/0x2c0 [ 26.862730] [] ? getname_flags+0x256/0x580 [ 26.868622] [] user_path_at_empty+0x40/0x50 [ 26.874599] [] SyS_access+0x235/0x6b0 [ 26.880047] [] ? SyS_faccessat+0x6c0/0x6c0 [ 26.885930] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 26.892418] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 26.898979] Code: 5b 28 e8 89 7b 73 ff 48 85 db 0f 84 6f 01 00 00 e8 6b 2b 81 ff 48 83 eb 28 0f 84 60 01 00 00 e8 5c 2b 81 ff 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 66 02 00 00 44 3b 2b 75 [ 26.926106] RIP [] avc_has_perm_noaudit+0x1bb/0x460 [ 26.932889] RSP [ 26.937014] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 26.943760] Dumping ftrace buffer: [ 26.947283] (ftrace buffer empty) [ 26.950982] Modules linked in: [ 26.954292] CPU: 0 PID: 3320 Comm: init Tainted: G D 4.4.111-g3301b55 #24 [ 26.962329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.971855] task: ffff8800b48e8000 task.stack: ffff8800b1440000 [ 26.977906] RIP: 0010:[] [] avc_has_perm_noaudit+0x1bb/0x460 [ 26.987049] RSP: 0018:ffff8800b1447970 EFLAGS: 00010202 [ 26.992490] RAX: 000000009ffffffb RBX: 00000004ffffffd9 RCX: ffffffff81b4d324 [ 26.999752] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8800b48e886c [ 27.007012] RBP: ffff8800b1447a40 R08: 0000000000000001 R09: 0000000000000000 [ 27.014274] R10: 0000000000000000 R11: 1ffff10016288efa R12: dffffc0000000000 [ 27.021532] R13: 0000000000000001 R14: ffff8800b1447a80 R15: 0000000000000007 [ 27.028796] FS: 00007f24021517a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 27.037032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.042909] CR2: 0000000000608340 CR3: 00000000b5212000 CR4: 0000000000160670 [ 27.050174] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.057438] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.064694] Stack: [ 27.066835] ffffffff81b4d212 ffff8800b1447b30 0000000700000000 1ffff10016288f33 [ 27.074874] 0000002600400000 0000000041b58ab3 ffffffff83fc7cae ffffffff81b4d170 [ 27.082898] ffff8800b1447ae8 ffff8800b1447b28 0000000041b58ab3 ffffffff83fbf22c [ 27.090930] Call Trace: [ 27.093512] [] ? avc_has_perm_noaudit+0xa2/0x460 [ 27.099918] [] ? avc_has_extended_perms+0xf30/0xf30 [ 27.106589] [] ? trailing_symlink+0xcf0/0xcf0 [ 27.112729] [] ? __module_text_address+0x13/0x140 [ 27.119215] [] ? pick_link+0x231/0xa50 [ 27.124833] [] selinux_inode_permission+0x281/0x4b0 [ 27.131497] [] ? selinux_bprm_committed_creds+0x440/0x440 [ 27.138692] [] ? follow_dotdot_rcu+0xb50/0xb50 [ 27.144922] [] security_inode_permission+0xaf/0xf0 [ 27.151496] [] __inode_permission2+0x93/0x240 [ 27.157638] [] inode_permission2+0x2f/0x100 [ 27.163608] [] link_path_walk+0x1ac/0x16e0 [ 27.169488] [] ? walk_component+0xff0/0xff0 [ 27.175455] [] ? __lock_acquire+0xb5f/0x4b50 [ 27.181508] [] path_lookupat+0x6a/0x3f0 [ 27.187130] [] filename_lookup+0x197/0x3b0 [ 27.193014] [] ? filename_parentat+0x3f0/0x3f0 [ 27.199244] [] ? strncpy_from_user+0x203/0x2c0 [ 27.205472] [] ? getname_flags+0x256/0x580 [ 27.211353] [] user_path_at_empty+0x40/0x50 [ 27.217322] [] SyS_access+0x235/0x6b0 [ 27.222769] [] ? SyS_faccessat+0x6c0/0x6c0 [ 27.228651] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 27.235140] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 27.241700] Code: 5b 28 e8 89 7b 73 ff 48 85 db 0f 84 6f 01 00 00 e8 6b 2b 81 ff 48 83 eb 28 0f 84 60 01 00 00 e8 5c 2b 81 ff 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 66 02 00 00 44 3b 2b 75 [ 27.269145] RIP [] avc_has_perm_noaudit+0x1bb/0x460 [ 27.276060] RSP [ 27.280329] general protection fault: 0000 [#3] PREEMPT SMP KASAN [ 27.287057] Dumping ftrace buffer: [ 27.290585] (ftrace buffer empty) [ 27.294286] Modules linked in: [ 27.297602] CPU: 0 PID: 3321 Comm: init Tainted: G D 4.4.111-g3301b55 #24 [ 27.305642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.314987] task: ffff8801d0eb8000 task.stack: ffff8800b1448000 [ 27.321031] RIP: 0010:[] [] avc_has_perm_noaudit+0x1bb/0x460 [ 27.330178] RSP: 0018:ffff8800b144f970 EFLAGS: 00010202 [ 27.335618] RAX: 000000009ffffffb RBX: 00000004ffffffd9 RCX: ffffffff81b4d324 [ 27.343395] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8801d0eb886c [ 27.350658] RBP: ffff8800b144fa40 R08: 0000000000000001 R09: 0000000000000000 [ 27.358084] R10: 0000000000000000 R11: 1ffff10016289efa R12: dffffc0000000000 [ 27.365347] R13: 0000000000000001 R14: ffff8800b144fa80 R15: 0000000000000007 [ 27.372619] FS: 00007f24021517a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 27.380863] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.386745] CR2: 0000000000608340 CR3: 00000000b5056000 CR4: 0000000000160670 [ 27.394011] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.401271] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.408532] Stack: [ 27.410681] ffffffff81b4d212 ffff8800b144fb30 0000000700000000 1ffff10016289f33 [ 27.418713] 0000002600400000 0000000041b58ab3 ffffffff83fc7cae ffffffff81b4d170 [ 27.426730] ffff8800b144fae8 ffff8800b144fb28 0000000041b58ab3 ffffffff83fbf22c [ 27.434740] Call Trace: [ 27.437317] [] ? avc_has_perm_noaudit+0xa2/0x460 [ 27.443721] [] ? avc_has_extended_perms+0xf30/0xf30 [ 27.450377] [] ? trailing_symlink+0xcf0/0xcf0 [ 27.456521] [] ? pick_link+0x231/0xa50 [ 27.462061] [] selinux_inode_permission+0x281/0x4b0 [ 27.468726] [] ? selinux_bprm_committed_creds+0x440/0x440 [ 27.476081] [] ? follow_dotdot_rcu+0xb50/0xb50 [ 27.482308] [] security_inode_permission+0xaf/0xf0 [ 27.488888] [] __inode_permission2+0x93/0x240 [ 27.495035] [] inode_permission2+0x2f/0x100 [ 27.501005] [] link_path_walk+0x1ac/0x16e0 [ 27.506887] [] ? walk_component+0xff0/0xff0 [ 27.512851] [] ? __lock_acquire+0xb5f/0x4b50 [ 27.518907] [] path_lookupat+0x6a/0x3f0 [ 27.524656] [] filename_lookup+0x197/0x3b0 [ 27.530549] [] ? filename_parentat+0x3f0/0x3f0 [ 27.536785] [] ? strncpy_from_user+0x203/0x2c0 [ 27.543015] [] ? getname_flags+0x256/0x580 [ 27.548896] [] user_path_at_empty+0x40/0x50 [ 27.554872] [] SyS_access+0x235/0x6b0 [ 27.560322] [] ? SyS_faccessat+0x6c0/0x6c0 [ 27.566208] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 27.572701] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 27.579265] Code: 5b 28 e8 89 7b 73 ff 48 85 db 0f 84 6f 01 00 00 e8 6b 2b 81 ff 48 83 eb 28 0f 84 60 01 00 00 e8 5c 2b 81 ff 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 66 02 00 00 44 3b 2b 75 [ 27.606955] RIP [] avc_has_perm_noaudit+0x1bb/0x460 [ 27.613778] RSP [ 27.617845] general protection fault: 0000 [#4] PREEMPT SMP KASAN [ 27.624578] Dumping ftrace buffer: [ 27.628097] (ftrace buffer empty) [ 27.631794] Modules linked in: [ 27.635104] CPU: 0 PID: 3319 Comm: init Tainted: G D 4.4.111-g3301b55 #24 [ 27.643144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.652490] task: ffff8800b48ec740 task.stack: ffff8800b4940000 [ 27.658542] RIP: 0010:[] [] avc_has_perm_noaudit+0x1bb/0x460 [ 27.667692] RSP: 0018:ffff8800b4947970 EFLAGS: 00010202 [ 27.673135] RAX: 000000009ffffffb RBX: 00000004ffffffd9 RCX: ffffffff81b4d324 [ 27.680395] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8800b48ecfac [ 27.687658] RBP: ffff8800b4947a40 R08: 0000000000000001 R09: 0000000000000000 [ 27.694920] R10: 0000000000000000 R11: 1ffff10016928efa R12: dffffc0000000000 [ 27.702182] R13: 0000000000000001 R14: ffff8800b4947a80 R15: 0000000000000007 [ 27.709450] FS: 00007f24021517a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 27.717674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.723551] CR2: 0000000000608340 CR3: 00000000b41b8000 CR4: 0000000000160670 [ 27.730830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.739136] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.746396] Stack: [ 27.748541] ffffffff81b4d212 ffff8800b4947b30 0000000700000000 1ffff10016928f33 [ 27.756577] 0000002600400000 0000000041b58ab3 ffffffff83fc7cae ffffffff81b4d170 [ 27.764601] ffff8800b4947ae8 ffff8800b4947b28 0000000041b58ab3 ffffffff83fbf22c [ 27.772630] Call Trace: [ 27.775204] [] ? avc_has_perm_noaudit+0xa2/0x460 [ 27.787533] [] ? avc_has_extended_perms+0xf30/0xf30 [ 27.794301] [] ? trailing_symlink+0xcf0/0xcf0 [ 27.802601] [] ? __module_text_address+0x13/0x140 [ 27.809089] [] ? pick_link+0x231/0xa50 [ 27.814622] [] selinux_inode_permission+0x281/0x4b0 [ 27.822852] [] ? selinux_bprm_committed_creds+0x440/0x440 [ 27.830039] [] ? follow_dotdot_rcu+0xb50/0xb50 [ 27.836271] [] security_inode_permission+0xaf/0xf0 [ 27.842850] [] __inode_permission2+0x93/0x240 [ 27.848995] [] inode_permission2+0x2f/0x100 [ 27.854961] [] link_path_walk+0x1ac/0x16e0 [ 27.860850] [] ? walk_component+0xff0/0xff0 [ 27.866818] [] ? __lock_acquire+0xb5f/0x4b50 [ 27.872883] [] path_lookupat+0x6a/0x3f0 [ 27.878507] [] filename_lookup+0x197/0x3b0 [ 27.884399] [] ? filename_parentat+0x3f0/0x3f0 [ 27.890628] [] ? strncpy_from_user+0x203/0x2c0 [ 27.896853] [] ? getname_flags+0x256/0x580 [ 27.902737] [] user_path_at_empty+0x40/0x50 [ 27.908707] [] SyS_access+0x235/0x6b0 [ 27.914155] [] ? SyS_faccessat+0x6c0/0x6c0 [ 27.920038] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 27.926557] [] entry_SYSCALL_64_fastpath+0x16/0x92 [ 27.933124] Code: 5b 28 e8 89 7b 73 ff 48 85 db 0f 84 6f 01 00 00 e8 6b 2b 81 ff 48 83 eb 28 0f 84 60 01 00 00 e8 5c 2b 81 ff 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 66 02 00 00 44 3b 2b 75 [ 27.960318] RIP [] avc_has_perm_noaudit+0x1bb/0x460 [ 27.967107] RSP [ 27.971224] ---[ end trace bed4d6c91679bc3f ]--- [ 27.975980] Kernel panic - not syncing: Fatal exception [ 28.062468] PANIC: double fault, error_code: 0x0 [ 28.067241] CPU: 1 PID: 3318 Comm: syzkaller897097 Tainted: G D 4.4.111-g3301b55 #24 [ 28.076219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.085542] task: ffff8800b48e97c0 task.stack: ffff8801cd7c8000 [ 28.091564] RIP: 0010:[] [] dump_page_badflags+0x1a/0x250 [ 28.100404] RSP: 0018:ffff880100000000 EFLAGS: 00010086 [ 28.105820] RAX: ffff8800b48e97c0 RBX: ffffea0002d28580 RCX: ffffffff8148f980 [ 28.113065] RDX: 0000000000000000 RSI: ffffffff838a83a0 RDI: ffffea0002d28580 [ 28.120308] RBP: ffff880100000030 R08: 0000000000000001 R09: 0000000000000000 [ 28.127548] R10: 0000000000000002 R11: fffffbfff0ad8d57 R12: 0000000000000000 [ 28.134790] R13: ffffffff838a83a0 R14: 0000000000000000 R15: 0000000000000000 [ 28.142041] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.150242] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.156095] CR2: ffff8800fffffff8 CR3: 000000000420c000 CR4: 0000000000160670 [ 28.163338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.170576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.177815] Stack: [ 28.179929] [ 28.181523] Call Trace: [ 28.184074] [ 28.186103] Code: e2 06 00 e9 1d fd ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 49 89 f5 41 54 49 89 d4 53 48 89 fb 48 83 ec 08 61 06 ed ff 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 89 [ 29.127594] Shutting down cpus with NMI [ 29.131621] Dumping ftrace buffer: [ 29.135134] (ftrace buffer empty) [ 29.138809] Kernel Offset: disabled [ 29.142401] Rebooting in 86400 seconds..