./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2010095437 <...> Warning: Permanently added '10.128.0.197' (ED25519) to the list of known hosts. execve("./syz-executor2010095437", ["./syz-executor2010095437"], 0x7fff1d867630 /* 10 vars */) = 0 brk(NULL) = 0x555555f8e000 brk(0x555555f8ed00) = 0x555555f8ed00 arch_prctl(ARCH_SET_FS, 0x555555f8e380) = 0 set_tid_address(0x555555f8e650) = 5070 set_robust_list(0x555555f8e660, 24) = 0 rseq(0x555555f8eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2010095437", 4096) = 28 getrandom("\x8c\x88\x50\x84\x8e\x97\xa8\xdb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555f8ed00 brk(0x555555fafd00) = 0x555555fafd00 brk(0x555555fb0000) = 0x555555fb0000 mprotect(0x7f21bfeeb000, 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 socket(AF_CAN, SOCK_RAW, CAN_RAW) = 3 [ 56.759704][ T5070] usercopy: Kernel memory exposure attempt detected from null address (offset 0, size 4)! [ 56.769861][ T5070] ------------[ cut here ]------------ [ 56.775359][ T5070] kernel BUG at mm/usercopy.c:102! [ 56.780491][ T5070] invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 56.786892][ T5070] CPU: 1 PID: 5070 Comm: syz-executor201 Not tainted 6.8.0-rc4-syzkaller-01053-g74293ea1c4db #0 [ 56.797283][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 56.807406][ T5070] RIP: 0010:usercopy_abort+0x84/0x90 [ 56.812691][ T5070] Code: 49 89 ce 48 c7 c3 40 db b7 8b 48 0f 44 de 48 c7 c7 e0 d9 b7 8b 4c 89 de 48 89 c1 41 52 41 56 53 e8 01 c5 60 09 48 83 c4 18 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 [ 56.832278][ T5070] RSP: 0018:ffffc90003a3fc50 EFLAGS: 00010296 [ 56.838327][ T5070] RAX: 0000000000000057 RBX: ffffffff8bb7db20 RCX: b071ef5fcc834300 [ 56.846279][ T5070] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 56.854239][ T5070] RBP: ffffffffffffffff R08: ffffffff81753e6c R09: 1ffff92000747f28 [ 56.862199][ T5070] R10: dffffc0000000000 R11: fffff52000747f29 R12: 0000000000000001 [ 56.870149][ T5070] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 56.878099][ T5070] FS: 0000555555f8e380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 56.887007][ T5070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.893569][ T5070] CR2: 0000000020001480 CR3: 000000001f404000 CR4: 00000000003506f0 [ 56.901521][ T5070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.909468][ T5070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.917418][ T5070] Call Trace: [ 56.920678][ T5070] [ 56.923587][ T5070] ? __die_body+0x8b/0xe0 [ 56.927901][ T5070] ? die+0xcf/0x110 [ 56.931691][ T5070] ? do_trap+0x157/0x390 [ 56.935912][ T5070] ? usercopy_abort+0x84/0x90 [ 56.940568][ T5070] ? do_error_trap+0x1dc/0x2c0 [ 56.945313][ T5070] ? usercopy_abort+0x84/0x90 [ 56.949972][ T5070] ? __pfx_do_error_trap+0x10/0x10 [ 56.955064][ T5070] ? handle_invalid_op+0x34/0x40 [ 56.959979][ T5070] ? usercopy_abort+0x84/0x90 [ 56.964636][ T5070] ? exc_invalid_op+0x38/0x50 [ 56.969308][ T5070] ? asm_exc_invalid_op+0x1a/0x20 [ 56.974314][ T5070] ? __wake_up_klogd+0xcc/0x110 [ 56.979144][ T5070] ? usercopy_abort+0x84/0x90 [ 56.983798][ T5070] __check_object_size+0x601/0xa00 [ 56.988893][ T5070] ? __might_fault+0xc5/0x120 [ 56.993551][ T5070] raw_getsockopt+0x37a/0x490 [ 56.998208][ T5070] ? __pfx_raw_getsockopt+0x10/0x10 [ 57.003385][ T5070] do_sock_getsockopt+0x373/0x850 [ 57.008407][ T5070] ? __pfx_do_sock_getsockopt+0x10/0x10 [ 57.013930][ T5070] ? _raw_spin_unlock_irq+0x23/0x50 [ 57.019108][ T5070] __sys_getsockopt+0x270/0x330 [ 57.023939][ T5070] ? __pfx___sys_getsockopt+0x10/0x10 [ 57.029293][ T5070] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 57.035684][ T5070] ? exc_page_fault+0x587/0x870 [ 57.040685][ T5070] __x64_sys_getsockopt+0xb5/0xd0 [ 57.045693][ T5070] do_syscall_64+0xf9/0x240 [ 57.050267][ T5070] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 57.056315][ T5070] RIP: 0033:0x7f21bfe782a9 [ 57.060709][ T5070] Code: 48 83 c4 28 c3 e8 37 17 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 57.080382][ T5070] RSP: 002b:00007ffcdfc8f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 57.088779][ T5070] RAX: ffffffffffffffda RBX: 00007ffcdfc8f208 RCX: 00007f21bfe782a9 [ 57.096822][ T5070] RDX: 0000000000000008 RSI: 0000000000000065 RDI: 0000000000000003 [ 57.104781][ T5070] RBP: 00007f21bfeeb610 R08: 0000000020001480 R09: 00007ffcdfc8f208 [ 57.112820][ T5070] R10: 0000000020001440 R11: 0000000000000246 R12: 0000000000000001 [ 57.120773][ T5070] R13: 00007ffcdfc8f1f8 R14: 0000000000000001 R15: 0000000000000001 [ 57.128731][ T5070] [ 57.131728][ T5070] Modules linked in: [ 57.136019][ T5070] ---[ end trace 0000000000000000 ]--- [ 57.141488][ T5070] RIP: 0010:usercopy_abort+0x84/0x90 [ 57.146882][ T5070] Code: 49 89 ce 48 c7 c3 40 db b7 8b 48 0f 44 de 48 c7 c7 e0 d9 b7 8b 4c 89 de 48 89 c1 41 52 41 56 53 e8 01 c5 60 09 48 83 c4 18 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 [ 57.166524][ T5070] RSP: 0018:ffffc90003a3fc50 EFLAGS: 00010296 [ 57.172581][ T5070] RAX: 0000000000000057 RBX: ffffffff8bb7db20 RCX: b071ef5fcc834300 [ 57.180566][ T5070] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 57.188642][ T5070] RBP: ffffffffffffffff R08: ffffffff81753e6c R09: 1ffff92000747f28 [ 57.196638][ T5070] R10: dffffc0000000000 R11: fffff52000747f29 R12: 0000000000000001 [ 57.204726][ T5070] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 57.213374][ T5070] FS: 0000555555f8e380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 57.222330][ T5070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.228948][ T5070] CR2: 0000000020001480 CR3: 000000001f404000 CR4: 00000000003506f0 [ 57.237001][ T5070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.245081][ T5070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.253062][ T5070] Kernel panic - not syncing: Fatal exception [ 57.259311][ T5070] Kernel Offset: disabled [ 57.263622][ T5070] Rebooting in 86400 seconds..