./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3163206807 <...> Warning: Permanently added '10.128.1.125' (ED25519) to the list of known hosts. execve("./syz-executor3163206807", ["./syz-executor3163206807"], 0x7ffd48a9ddd0 /* 10 vars */) = 0 brk(NULL) = 0x5555564df000 brk(0x5555564dfd00) = 0x5555564dfd00 arch_prctl(ARCH_SET_FS, 0x5555564df380) = 0 set_tid_address(0x5555564df650) = 5067 set_robust_list(0x5555564df660, 24) = 0 rseq(0x5555564dfca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3163206807", 4096) = 28 getrandom("\x27\x7d\xcd\x4a\xb1\xd3\x1b\x7c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555564dfd00 brk(0x555556500d00) = 0x555556500d00 brk(0x555556501000) = 0x555556501000 mprotect(0x7f0993bc0000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5068 attached , child_tidptr=0x5555564df650) = 5068 [pid 5068] set_robust_list(0x5555564df660, 24) = 0 [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setpgid(0, 0) = 0 [pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1000", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/self/task", O_RDWR) = -1 EISDIR (Is a directory) [pid 5068] openat(AT_FDCWD, "/proc/self/task", O_RDONLY) = 3 [pid 5068] fchdir(3) = 0 [pid 5068] mount(NULL, ".", "proc", 0, NULL) = 0 [pid 5068] clone(child_stack=0x30, flags=0./strace-static-x86_64: Process 5069 attached ) = 5069 [pid 5069] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x30} --- [pid 5068] openat(AT_FDCWD, "/proc/self/task/5069/pagemap", O_RDWR) = 4 [pid 5068] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0x10, 0x60), 0x20000180 [pid 5069] +++ killed by SIGSEGV +++ [ 54.612530][ T5068] general protection fault, probably for non-canonical address 0xdffffc00000000fe: 0000 [#1] PREEMPT SMP KASAN [ 54.624316][ T5068] KASAN: null-ptr-deref in range [0x00000000000007f0-0x00000000000007f7] [ 54.632705][ T5068] CPU: 0 PID: 5068 Comm: syz-executor316 Not tainted 6.7.0-rc7-syzkaller #0 [ 54.641373][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 54.651411][ T5068] RIP: 0010:do_pagemap_scan+0xa89/0xcd0 [ 54.656987][ T5068] Code: 8d 41 b8 01 00 00 00 e8 c5 0b 57 ff 48 8b 5c 24 78 58 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 07 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f8 01 00 00 48 83 bb f0 07 00 00 00 0f 85 1d 01 [ 54.676596][ T5068] RSP: 0018:ffffc9000425fcf0 EFLAGS: 00010212 [ 54.682657][ T5068] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8167148e [ 54.690617][ T5068] RDX: 00000000000000fe RSI: ffffffff8accb1a0 RDI: 00000000000007f0 [ 54.698575][ T5068] RBP: 0000000020ffc000 R08: 0000000000000000 R09: fffffbfff23e37d2 [ 54.706532][ T5068] R10: ffffffff91f1be97 R11: 0000000000000000 R12: 000000000000230e [ 54.714492][ T5068] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 54.722459][ T5068] FS: 00005555564df380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 54.731381][ T5068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.737950][ T5068] CR2: 00000000005fdeb8 CR3: 00000000740db000 CR4: 0000000000350ef0 [ 54.745909][ T5068] Call Trace: [ 54.749176][ T5068] [ 54.752096][ T5068] ? show_regs+0x8f/0xa0 [ 54.756339][ T5068] ? die_addr+0x4f/0xd0 [ 54.760487][ T5068] ? exc_general_protection+0x155/0x230 [ 54.766045][ T5068] ? asm_exc_general_protection+0x26/0x30 [ 54.771753][ T5068] ? hlock_class+0x4e/0x130 [ 54.776253][ T5068] ? do_pagemap_scan+0xa89/0xcd0 [ 54.781186][ T5068] ? show_smaps_rollup+0x8f0/0x8f0 [ 54.786293][ T5068] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 54.792189][ T5068] do_pagemap_cmd+0x5e/0x80 [ 54.796695][ T5068] ? do_pagemap_scan+0xcd0/0xcd0 [ 54.801623][ T5068] __x64_sys_ioctl+0x18f/0x210 [ 54.806391][ T5068] do_syscall_64+0x40/0x110 [ 54.810891][ T5068] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.816770][ T5068] RIP: 0033:0x7f0993b4dbf9 [ 54.821175][ T5068] 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 [ 54.840771][ T5068] RSP: 002b:00007ffe8cc5b718 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.849173][ T5068] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0993b4dbf9 [ 54.857129][ T5068] RDX: 0000000020000180 RSI: 00000000c0606610 RDI: 0000000000000004 [ 54.865094][ T5068] RBP: 00007f0993bc05f0 R08: 00007ffe8cc5b3c4 R09: 0000000000000006 [ 54.873058][ T5068] R10: 0000000000000014 R11: 0000000000000246 R12: 0000000000000001 [ 54.881016][ T5068] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 54.888979][ T5068] [ 54.891982][ T5068] Modules linked in: [ 54.896196][ T5068] ---[ end trace 0000000000000000 ]--- [ 54.901764][ T5068] RIP: 0010:do_pagemap_scan+0xa89/0xcd0 [ 54.907343][ T5068] Code: 8d 41 b8 01 00 00 00 e8 c5 0b 57 ff 48 8b 5c 24 78 58 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 07 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f8 01 00 00 48 83 bb f0 07 00 00 00 0f 85 1d 01 [ 54.926966][ T5068] RSP: 0018:ffffc9000425fcf0 EFLAGS: 00010212 [ 54.933041][ T5068] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8167148e [ 54.941023][ T5068] RDX: 00000000000000fe RSI: ffffffff8accb1a0 RDI: 00000000000007f0 [ 54.949080][ T5068] RBP: 0000000020ffc000 R08: 0000000000000000 R09: fffffbfff23e37d2 [ 54.957059][ T5068] R10: ffffffff91f1be97 R11: 0000000000000000 R12: 000000000000230e [ 54.965043][ T5068] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 54.973030][ T5068] FS: 00005555564df380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 54.981998][ T5068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.988579][ T5068] CR2: 00007f0993b80b00 CR3: 00000000740db000 CR4: 0000000000350ef0 [ 54.996568][ T5068] Kernel panic - not syncing: Fatal exception [ 55.002905][ T5068] Kernel Offset: disabled [ 55.007208][ T5068] Rebooting in 86400 seconds..