./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor479785599 <...> Warning: Permanently added '10.128.1.161' (ED25519) to the list of known hosts. execve("./syz-executor479785599", ["./syz-executor479785599"], 0x7ffeb784f7f0 /* 10 vars */) = 0 brk(NULL) = 0x5555645a9000 brk(0x5555645a9e00) = 0x5555645a9e00 arch_prctl(ARCH_SET_FS, 0x5555645a9480) = 0 set_tid_address(0x5555645a9750) = 5100 set_robust_list(0x5555645a9760, 24) = 0 rseq(0x5555645a9da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor479785599", 4096) = 27 getrandom("\xb6\xd4\xa2\xa1\x1b\x23\x2d\x72", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555645a9e00 brk(0x5555645cae00) = 0x5555645cae00 brk(0x5555645cb000) = 0x5555645cb000 mprotect(0x7feee7c0b000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7feee7b668e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7feee7b6df70}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7feee7b668e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7feee7b6df70}, NULL, 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5101 attached , child_tidptr=0x5555645a9750) = 5101 [pid 5101] set_robust_list(0x5555645a9760, 24) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5101] setpgid(0, 0) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 executing program [pid 5101] write(1, "executing program\n", 18) = 18 [pid 5101] openat(AT_FDCWD, "/dev/udmabuf", O_RDWR) = 3 [pid 5101] memfd_create("\x79\x10\x35\xfb\xf7\x75\x83\x25\x1f\xe0\x39\x40\x3a\x72\xc2\xb9\x78\x30\x90\x50\x03", MFD_ALLOW_SEALING) = 4 [pid 5101] fcntl(4, F_ADD_SEALS, F_SEAL_SEAL|F_SEAL_SHRINK|F_SEAL_GROW) = 0 [ 75.127727][ T5101] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 75.127748][ T5101] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 75.127761][ T5101] CPU: 1 PID: 5101 Comm: syz-executor479 Not tainted 6.10.0-rc1-next-20240529-syzkaller #0 [ 75.127776][ T5101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 75.127785][ T5101] RIP: 0010:udmabuf_create+0xa54/0x11c0 [ 75.127819][ T5101] Code: 01 00 00 48 8b 44 24 70 42 80 3c 28 00 48 8b 5c 24 68 74 08 48 89 df e8 9a 63 ed fb 4c 8b 3b 49 8d 5f 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 7d 63 ed fb 48 8b 1b 48 89 de 48 [ 75.127832][ T5101] RSP: 0018:ffffc9000357fbe0 EFLAGS: 00010202 [ 75.127845][ T5101] RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 [ 75.127868][ T5101] RDX: 0000000000000000 RSI: ffff888022207028 RDI: ffff8880295ee248 [ 75.127879][ T5101] RBP: ffffc9000357fd70 R08: ffffffff8fad8daf R09: 1ffffffff1f5b1b5 [ 75.127890][ T5101] R10: dffffc0000000000 R11: fffffbfff1f5b1b6 R12: 0000000000000001 [ 75.127901][ T5101] R13: dffffc0000000000 R14: ffff888022207028 R15: 0000000000000000 [ 75.127912][ T5101] FS: 00005555645a9480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 75.127925][ T5101] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.127937][ T5101] CR2: 00007feee7c0f0d0 CR3: 0000000022b26000 CR4: 00000000003506f0 [ 75.127959][ T5101] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.127971][ T5101] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.127985][ T5101] Call Trace: [ 75.127997][ T5101] [ 75.128005][ T5101] ? __die_body+0x88/0xe0 [ 75.128039][ T5101] ? die_addr+0x108/0x140 [ 75.128072][ T5101] ? exc_general_protection+0x3dd/0x5d0 [ 75.128127][ T5101] ? asm_exc_general_protection+0x26/0x30 [ 75.128161][ T5101] ? udmabuf_create+0xa54/0x11c0 [ 75.128197][ T5101] ? __pfx_udmabuf_create+0x10/0x10 [ 75.128214][ T5101] ? __might_fault+0xc6/0x120 [ 75.128233][ T5101] udmabuf_ioctl+0x304/0x4f0 [ 75.128249][ T5101] ? __pfx_udmabuf_ioctl+0x10/0x10 [ 75.128266][ T5101] ? __pfx_ptrace_notify+0x10/0x10 [ 75.128296][ T5101] ? bpf_lsm_file_ioctl+0x9/0x10 [ 75.128315][ T5101] ? security_file_ioctl+0x87/0xb0 [ 75.128335][ T5101] ? __pfx_udmabuf_ioctl+0x10/0x10 [ 75.128353][ T5101] __se_sys_ioctl+0xfc/0x170 [ 75.128375][ T5101] do_syscall_64+0xf3/0x230 [ 75.128392][ T5101] ? clear_bhb_loop+0x35/0x90 [ 75.128413][ T5101] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.128431][ T5101] RIP: 0033:0x7feee7b981b9 [ 75.128450][ T5101] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 [ 75.128462][ T5101] RSP: 002b:00007ffda54957e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.128477][ T5101] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feee7b981b9 [ 75.128488][ T5101] RDX: 00000000200002c0 RSI: 0000000040187542 RDI: 0000000000000003 [ 75.128498][ T5101] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 75.128506][ T5101] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 [ 75.128515][ T5101] R13: 431bde82d7b634db R14: 00007ffda5495820 R15: 0000000000000001 [ 75.128532][ T5101] [ 75.128537][ T5101] Modules linked in: [ 75.128802][ T5101] ---[ end trace 0000000000000000 ]--- [ 75.459281][ T5101] RIP: 0010:udmabuf_create+0xa54/0x11c0 [ 75.464915][ T5101] Code: 01 00 00 48 8b 44 24 70 42 80 3c 28 00 48 8b 5c 24 68 74 08 48 89 df e8 9a 63 ed fb 4c 8b 3b 49 8d 5f 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 7d 63 ed fb 48 8b 1b 48 89 de 48 [ 75.484734][ T5101] RSP: 0018:ffffc9000357fbe0 EFLAGS: 00010202 [ 75.491138][ T5101] RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 [ 75.499306][ T5101] RDX: 0000000000000000 RSI: ffff888022207028 RDI: ffff8880295ee248 [ 75.507363][ T5101] RBP: ffffc9000357fd70 R08: ffffffff8fad8daf R09: 1ffffffff1f5b1b5 [ 75.515442][ T5101] R10: dffffc0000000000 R11: fffffbfff1f5b1b6 R12: 0000000000000001 [ 75.523475][ T5101] R13: dffffc0000000000 R14: ffff888022207028 R15: 0000000000000000 [ 75.531512][ T5101] FS: 00005555645a9480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 75.540499][ T5101] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.547183][ T5101] CR2: 00000000005fdeb8 CR3: 0000000022b26000 CR4: 00000000003506f0 [ 75.555236][ T5101] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.563265][ T5101] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.571307][ T5101] Kernel panic - not syncing: Fatal exception [ 75.577837][ T5101] Kernel Offset: disabled [ 75.582191][ T5101] Rebooting in 86400 seconds..