./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2050454783 <...> DUID 00:04:9b:41:e3:df:54:6f:ca:1f:62:a0:1b:7c:64:71:74:ce forked to background, child pid 3185 [ 26.513485][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.524642][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. execve("./syz-executor2050454783", ["./syz-executor2050454783"], 0x7ffd55f39ea0 /* 10 vars */) = 0 brk(NULL) = 0x55555672c000 brk(0x55555672cc40) = 0x55555672cc40 arch_prctl(ARCH_SET_FS, 0x55555672c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2050454783", 4096) = 28 brk(0x55555674dc40) = 0x55555674dc40 brk(0x55555674e000) = 0x55555674e000 mprotect(0x7f9d90de4000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/fb0", O_RDONLY) = 3 mmap(0x20002000, 16384, PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSDOWN, MAP_PRIVATE|MAP_FIXED, 3, 0xa9000) = 0x20002000 openat(AT_FDCWD, "cpuacct.stat", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 syzkaller login: [ 44.900808][ T3606] ------------[ cut here ]------------ [ 44.906681][ T3606] kernel BUG at mm/memory.c:2218! [ 44.911707][ T3606] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 44.917757][ T3606] CPU: 0 PID: 3606 Comm: syz-executor205 Not tainted 6.0.0-rc1-syzkaller-00025-g274a2eebf80c #0 [ 44.928156][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 44.938196][ T3606] RIP: 0010:vmf_insert_pfn_prot+0x40b/0x420 [ 44.944104][ T3606] Code: 92 c6 31 ff e8 46 d8 c1 ff 84 db 74 2b e8 5d d5 c1 ff e9 87 fd ff ff e8 53 d5 c1 ff 0f 0b e8 4c d5 c1 ff 0f 0b e8 45 d5 c1 ff <0f> 0b e8 ae 9f 70 08 e8 39 d5 c1 ff 0f 0b e8 32 d5 c1 ff 0f 0b 55 [ 44.963694][ T3606] RSP: 0018:ffffc900038ef340 EFLAGS: 00010293 [ 44.969743][ T3606] RAX: ffffffff81c7c30b RBX: 0000000000000420 RCX: ffff88801c14d880 [ 44.977697][ T3606] RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 [ 44.985662][ T3606] RBP: ffffc900038ef400 R08: ffffffff81c7bfff R09: ffffffff81c7bfd3 [ 44.993613][ T3606] R10: 0000000000000002 R11: ffff88801c14d880 R12: 000000000c140476 [ 45.001579][ T3606] R13: ffff888022369738 R14: ffffc900038ef380 R15: 000000000001e079 [ 45.009551][ T3606] FS: 000055555672c300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 45.018468][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.025031][ T3606] CR2: 0000000020002000 CR3: 0000000026d13000 CR4: 00000000003506f0 [ 45.032984][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.040943][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.048893][ T3606] Call Trace: [ 45.052155][ T3606] [ 45.055068][ T3606] ? vm_map_pages_zero+0x140/0x140 [ 45.060165][ T3606] ? count_memcg_event_mm+0x342/0x390 [ 45.065520][ T3606] drm_gem_shmem_fault+0x1db/0x240 [ 45.070617][ T3606] __do_fault+0x139/0x4f0 [ 45.074928][ T3606] handle_mm_fault+0x2835/0x35c0 [ 45.079852][ T3606] ? numa_migrate_prep+0x250/0x250 [ 45.084945][ T3606] ? vmacache_find+0x4f9/0x590 [ 45.089689][ T3606] ? vmacache_update+0x9f/0xf0 [ 45.094437][ T3606] do_user_addr_fault+0x69b/0xcb0 [ 45.099443][ T3606] exc_page_fault+0x7a/0x120 [ 45.104026][ T3606] asm_exc_page_fault+0x22/0x30 [ 45.108861][ T3606] RIP: 0010:fault_in_readable+0x1ea/0x360 [ 45.114564][ T3606] Code: 4c 89 eb 4d 01 e6 49 81 e6 00 f0 ff ff 4d 39 ee 0f 82 e4 00 00 00 e8 d5 2f c3 ff 0f 1f 44 00 00 4c 39 f3 74 46 e8 c6 2f c3 ff <44> 8a 23 e8 be 2f c3 ff 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 [ 45.134167][ T3606] RSP: 0018:ffffc900038ef8a0 EFLAGS: 00050293 [ 45.140236][ T3606] RAX: ffffffff81c6688a RBX: 0000000020002000 RCX: ffff88801c14d880 [ 45.148230][ T3606] RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000 [ 45.156284][ T3606] RBP: ffffc900038ef958 R08: ffffffff81c667fb R09: ffffffff84331424 [ 45.164247][ T3606] R10: 0000000000000002 R11: ffff88801c14d880 R12: 0000000000001000 [ 45.172218][ T3606] R13: 0000000020001040 R14: 0000000020003000 R15: 1ffff9200071df1c [ 45.180177][ T3606] ? fault_in_iov_iter_readable+0x44/0x2a0 [ 45.185968][ T3606] ? fault_in_readable+0x15b/0x360 [ 45.191060][ T3606] ? fault_in_readable+0x1ea/0x360 [ 45.196154][ T3606] ? fault_in_safe_writeable+0x240/0x240 [ 45.201798][ T3606] fault_in_iov_iter_readable+0xe6/0x2a0 [ 45.207427][ T3606] generic_perform_write+0x216/0x610 [ 45.212739][ T3606] ? generic_file_direct_write+0x460/0x460 [ 45.218546][ T3606] ? down_write+0x10d/0x170 [ 45.224299][ T3606] ? down_read_killable+0x80/0x80 [ 45.229318][ T3606] ? ext4_write_checks+0x254/0x2c0 [ 45.234417][ T3606] ext4_buffered_write_iter+0x122/0x3a0 [ 45.240060][ T3606] ext4_file_write_iter+0xabb/0x1ae0 [ 45.245380][ T3606] ? read_lock_is_recursive+0x10/0x10 [ 45.250751][ T3606] ? ext4_file_read_iter+0x740/0x740 [ 45.256025][ T3606] vfs_write+0x7b5/0xbb0 [ 45.260274][ T3606] ? file_end_write+0x230/0x230 [ 45.265126][ T3606] ? _raw_spin_unlock_irq+0x2a/0x40 [ 45.270350][ T3606] ? __fdget_pos+0x252/0x2e0 [ 45.274946][ T3606] ksys_write+0x19b/0x2c0 [ 45.279351][ T3606] ? print_irqtrace_events+0x220/0x220 [ 45.284812][ T3606] ? __ia32_sys_read+0x80/0x80 [ 45.289571][ T3606] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 45.295542][ T3606] ? syscall_enter_from_user_mode+0x86/0x1d0 [ 45.301507][ T3606] do_syscall_64+0x2b/0x70 [ 45.305925][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.311801][ T3606] RIP: 0033:0x7f9d90d77b89 [ 45.316198][ T3606] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 45.335797][ T3606] RSP: 002b:00007ffcf31db8c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 45.344191][ T3606] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d90d77b89 [ 45.352145][ T3606] RDX: 000000000000fea7 RSI: 0000000020000040 RDI: 0000000000000004 [ 45.360098][ T3606] RBP: 00007f9d90d3bd30 R08: 00000000000a9000 R09: 0000000000000000 [ 45.368053][ T3606] R10: 00000000000a9000 R11: 0000000000000246 R12: 00007f9d90d3bdc0 [ 45.376005][ T3606] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 45.383963][ T3606] [ 45.386978][ T3606] Modules linked in: [ 45.391119][ T3606] ---[ end trace 0000000000000000 ]--- [ 45.396640][ T3606] RIP: 0010:vmf_insert_pfn_prot+0x40b/0x420 [ 45.402555][ T3606] Code: 92 c6 31 ff e8 46 d8 c1 ff 84 db 74 2b e8 5d d5 c1 ff e9 87 fd ff ff e8 53 d5 c1 ff 0f 0b e8 4c d5 c1 ff 0f 0b e8 45 d5 c1 ff <0f> 0b e8 ae 9f 70 08 e8 39 d5 c1 ff 0f 0b e8 32 d5 c1 ff 0f 0b 55 [ 45.422250][ T3606] RSP: 0018:ffffc900038ef340 EFLAGS: 00010293 [ 45.428355][ T3606] RAX: ffffffff81c7c30b RBX: 0000000000000420 RCX: ffff88801c14d880 [ 45.436640][ T3606] RDX: 0000000000000000 RSI: 0000000000000420 RDI: 0000000000000420 [ 45.444613][ T3606] RBP: ffffc900038ef400 R08: ffffffff81c7bfff R09: ffffffff81c7bfd3 [ 45.452628][ T3606] R10: 0000000000000002 R11: ffff88801c14d880 R12: 000000000c140476 [ 45.460631][ T3606] R13: ffff888022369738 R14: ffffc900038ef380 R15: 000000000001e079 [ 45.468638][ T3606] FS: 000055555672c300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 45.477597][ T3606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.484186][ T3606] CR2: 0000000020002000 CR3: 0000000026d13000 CR4: 00000000003506f0 [ 45.492366][ T3606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.500372][ T3606] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.508374][ T3606] Kernel panic - not syncing: Fatal exception [ 45.514624][ T3606] Kernel Offset: disabled [ 45.518941][ T3606] Rebooting in 86400 seconds..