[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 44.728461][ T8349] sshd (8349) used greatest stack depth: 19064 bytes left Warning: Permanently added '10.128.0.241' (ECDSA) to the list of known hosts. executing program [ 53.312048][ T8454] ------------[ cut here ]------------ [ 53.317939][ T8454] WARNING: CPU: 0 PID: 8454 at mm/page_alloc.c:4976 __alloc_pages_nodemask+0x4e5/0x5a0 [ 53.328608][ T8454] Modules linked in: [ 53.332683][ T8454] CPU: 1 PID: 8454 Comm: syz-executor584 Not tainted 5.11.0-rc3-syzkaller #0 [ 53.341518][ T8454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.353004][ T8454] RIP: 0010:__alloc_pages_nodemask+0x4e5/0x5a0 [ 53.359201][ T8454] Code: aa 09 00 e9 dd fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c eb fd ff ff 4c 89 ef e8 54 aa 09 00 8b 74 24 18 e9 da fd ff ff <0f> 0b e9 f3 fd ff ff a9 00 00 08 00 75 16 8b 4c 24 1c 89 cb 81 e3 [ 53.380121][ T8454] RSP: 0018:ffffc90000e9f900 EFLAGS: 00010246 [ 53.386357][ T8454] RAX: ffffc90000e9f980 RBX: ffffc90000e9f980 RCX: 0000000000000000 [ 53.394621][ T8454] RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90000e9f9a8 [ 53.403852][ T8454] RBP: ffffc90000e9fa40 R08: dffffc0000000000 R09: ffffc90000e9f980 [ 53.411859][ T8454] R10: fffff520001d3f35 R11: 0000000000000000 R12: dffffc0000000000 [ 53.420299][ T8454] R13: 0000000000000012 R14: 1ffff920001d3f2c R15: 0000000000040cc0 [ 53.428783][ T8454] FS: 0000000002629880(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 53.438071][ T8454] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.444827][ T8454] CR2: 00007f751f4c71a8 CR3: 000000001264e000 CR4: 00000000001506f0 [ 53.453872][ T8454] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.462399][ T8454] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.470513][ T8454] Call Trace: [ 53.473956][ T8454] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 53.479578][ T8454] ? alloc_pages_current+0x2e5/0x520 [ 53.484985][ T8454] kmalloc_order+0x40/0x130 [ 53.489502][ T8454] ? rcu_lock_release+0x5/0x20 [ 53.495456][ T8454] kmalloc_order_trace+0x15/0x70 [ 53.500611][ T8454] __kmalloc_track_caller+0x246/0x330 [ 53.506352][ T8454] ? cap_capable+0x27e/0x2d0 [ 53.510988][ T8454] memdup_user_nul+0x26/0xf0 [ 53.517115][ T8454] smk_set_cipso+0x18b/0x7e0 [ 53.521816][ T8454] ? smk_open_cipso+0x20/0x20 [ 53.526872][ T8454] ? rcu_read_lock_any_held+0xb1/0x130 [ 53.532718][ T8454] ? rcu_read_lock_bh_held+0xf0/0xf0 [ 53.538184][ T8454] ? smk_write_access2+0x290/0x290 [ 53.543915][ T8454] vfs_write+0x289/0xc90 [ 53.548344][ T8454] ? file_end_write+0x220/0x220 [ 53.553343][ T8454] ? __up_read+0x264/0x790 [ 53.557772][ T8454] ? do_user_addr_fault+0x7e9/0xb20 [ 53.564574][ T8454] ? __fdget_pos+0x25e/0x2f0 [ 53.569197][ T8454] ksys_write+0x171/0x2a0 [ 53.573676][ T8454] ? __ia32_sys_read+0x80/0x80 [ 53.578665][ T8454] ? syscall_enter_from_user_mode+0x24/0x190 [ 53.584761][ T8454] ? syscall_enter_from_user_mode+0x24/0x190 [ 53.590767][ T8454] do_syscall_64+0x2d/0x70 [ 53.595255][ T8454] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.601181][ T8454] RIP: 0033:0x440359 [ 53.606216][ T8454] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.627133][ T8454] RSP: 002b:00007ffc65526ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 53.635840][ T8454] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 [ 53.643941][ T8454] RDX: 0000000020014b6f RSI: 0000000020014b00 RDI: 0000000000000003 [ 53.651951][ T8454] RBP: 00000000006ca018 R08: 0000000000000014 R09: 00000000004002c8 [ 53.661199][ T8454] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60 [ 53.669546][ T8454] R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 [ 53.678081][ T8454] Kernel panic - not syncing: panic_on_warn set ... [ 53.684774][ T8454] CPU: 0 PID: 8454 Comm: syz-executor584 Not tainted 5.11.0-rc3-syzkaller #0 [ 53.693744][ T8454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.703810][ T8454] Call Trace: [ 53.707117][ T8454] dump_stack+0x183/0x22e [ 53.711458][ T8454] ? log_buf_vmcoreinfo_setup+0x45d/0x45d [ 53.717195][ T8454] ? show_regs_print_info+0x12/0x12 [ 53.722414][ T8454] panic+0x2e1/0x850 [ 53.726319][ T8454] ? __kernel_text_address+0x93/0x100 [ 53.731704][ T8454] ? __warn+0x13e/0x270 [ 53.735894][ T8454] ? nmi_panic+0x90/0x90 [ 53.740156][ T8454] __warn+0x26a/0x270 [ 53.744145][ T8454] ? __alloc_pages_nodemask+0x4e5/0x5a0 [ 53.749704][ T8454] ? __alloc_pages_nodemask+0x4e5/0x5a0 [ 53.755254][ T8454] report_bug+0x1b1/0x2e0 [ 53.759592][ T8454] handle_bug+0x3d/0x70 [ 53.763834][ T8454] exc_invalid_op+0x16/0x40 [ 53.768337][ T8454] asm_exc_invalid_op+0x12/0x20 [ 53.773181][ T8454] RIP: 0010:__alloc_pages_nodemask+0x4e5/0x5a0 [ 53.779340][ T8454] Code: aa 09 00 e9 dd fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c eb fd ff ff 4c 89 ef e8 54 aa 09 00 8b 74 24 18 e9 da fd ff ff <0f> 0b e9 f3 fd ff ff a9 00 00 08 00 75 16 8b 4c 24 1c 89 cb 81 e3 [ 53.798956][ T8454] RSP: 0018:ffffc90000e9f900 EFLAGS: 00010246 [ 53.805025][ T8454] RAX: ffffc90000e9f980 RBX: ffffc90000e9f980 RCX: 0000000000000000 [ 53.812995][ T8454] RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90000e9f9a8 [ 53.821334][ T8454] RBP: ffffc90000e9fa40 R08: dffffc0000000000 R09: ffffc90000e9f980 [ 53.829328][ T8454] R10: fffff520001d3f35 R11: 0000000000000000 R12: dffffc0000000000 [ 53.837306][ T8454] R13: 0000000000000012 R14: 1ffff920001d3f2c R15: 0000000000040cc0 [ 53.845313][ T8454] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 53.850923][ T8454] ? alloc_pages_current+0x2e5/0x520 [ 53.856287][ T8454] kmalloc_order+0x40/0x130 [ 53.860803][ T8454] ? rcu_lock_release+0x5/0x20 [ 53.865572][ T8454] kmalloc_order_trace+0x15/0x70 [ 53.870521][ T8454] __kmalloc_track_caller+0x246/0x330 [ 53.875921][ T8454] ? cap_capable+0x27e/0x2d0 [ 53.880539][ T8454] memdup_user_nul+0x26/0xf0 [ 53.885138][ T8454] smk_set_cipso+0x18b/0x7e0 [ 53.889741][ T8454] ? smk_open_cipso+0x20/0x20 [ 53.894639][ T8454] ? rcu_read_lock_any_held+0xb1/0x130 [ 53.900096][ T8454] ? rcu_read_lock_bh_held+0xf0/0xf0 [ 53.905391][ T8454] ? smk_write_access2+0x290/0x290 [ 53.910506][ T8454] vfs_write+0x289/0xc90 [ 53.914772][ T8454] ? file_end_write+0x220/0x220 [ 53.919642][ T8454] ? __up_read+0x264/0x790 [ 53.924068][ T8454] ? do_user_addr_fault+0x7e9/0xb20 [ 53.929523][ T8454] ? __fdget_pos+0x25e/0x2f0 [ 53.934116][ T8454] ksys_write+0x171/0x2a0 [ 53.938452][ T8454] ? __ia32_sys_read+0x80/0x80 [ 53.943217][ T8454] ? syscall_enter_from_user_mode+0x24/0x190 [ 53.949240][ T8454] ? syscall_enter_from_user_mode+0x24/0x190 [ 53.955228][ T8454] do_syscall_64+0x2d/0x70 [ 53.959652][ T8454] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.965550][ T8454] RIP: 0033:0x440359 [ 53.969451][ T8454] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.989148][ T8454] RSP: 002b:00007ffc65526ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 53.997570][ T8454] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 [ 54.005563][ T8454] RDX: 0000000020014b6f RSI: 0000000020014b00 RDI: 0000000000000003 [ 54.013546][ T8454] RBP: 00000000006ca018 R08: 0000000000000014 R09: 00000000004002c8 [ 54.025783][ T8454] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60 [ 54.033759][ T8454] R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 [ 54.042503][ T8454] Kernel Offset: disabled [ 54.047066][ T8454] Rebooting in 86400 seconds..