./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1812398047 <...> Warning: Permanently added '10.128.1.175' (ED25519) to the list of known hosts. execve("./syz-executor1812398047", ["./syz-executor1812398047"], 0x7ffde0f39940 /* 10 vars */) = 0 brk(NULL) = 0x55555583b000 brk(0x55555583bd00) = 0x55555583bd00 arch_prctl(ARCH_SET_FS, 0x55555583b380) = 0 set_tid_address(0x55555583b650) = 5066 set_robust_list(0x55555583b660, 24) = 0 rseq(0x55555583bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1812398047", 4096) = 28 getrandom("\x8c\x22\x1f\xed\xed\x08\xd9\x97", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555583bd00 brk(0x55555585cd00) = 0x55555585cd00 brk(0x55555585d000) = 0x55555585d000 mprotect(0x7fe720e7c000, 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 5067 attached , child_tidptr=0x55555583b650) = 5067 [pid 5067] set_robust_list(0x55555583b660, 24) = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/task", O_RDWR) = -1 EISDIR (Is a directory) [pid 5067] openat(AT_FDCWD, "/proc/self/task", O_RDONLY) = 3 [pid 5067] fchdir(3) = 0 [pid 5067] mount(NULL, ".", "proc", 0, NULL) = 0 [pid 5067] clone(child_stack=0x30, flags=0./strace-static-x86_64: Process 5068 attached [pid 5068] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x30} --- [pid 5067] <... clone resumed>) = 5068 [pid 5067] openat(AT_FDCWD, "/proc/self/task/5068/pagemap", O_RDWR) = 4 [pid 5068] +++ killed by SIGSEGV +++ [ 73.667631][ T5067] general protection fault, probably for non-canonical address 0xdffffc00000000fe: 0000 [#1] PREEMPT SMP KASAN [ 73.679405][ T5067] KASAN: null-ptr-deref in range [0x00000000000007f0-0x00000000000007f7] [ 73.687806][ T5067] CPU: 1 PID: 5067 Comm: syz-executor181 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0 [ 73.698289][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 73.708433][ T5067] RIP: 0010:do_pagemap_scan+0xa89/0xcd0 [ 73.713994][ T5067] 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 [ 73.733599][ T5067] RSP: 0018:ffffc9000411fcf0 EFLAGS: 00010202 [ 73.739654][ T5067] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8167148e [ 73.747610][ T5067] RDX: 00000000000000fe RSI: ffffffff8accb1c0 RDI: 00000000000007f0 [ 73.755595][ T5067] RBP: 0000000020ffc000 R08: 0000000000000000 R09: fffffbfff23e37d2 [ 73.763560][ T5067] R10: ffffffff91f1be97 R11: 0000000000000000 R12: 000000000000230e [ 73.771526][ T5067] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 73.779498][ T5067] FS: 000055555583b380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 73.788439][ T5067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.795126][ T5067] CR2: 00000000005fdeb8 CR3: 000000007bf55000 CR4: 00000000003506f0 [ 73.803096][ T5067] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.811088][ T5067] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.819049][ T5067] Call Trace: [ 73.822313][ T5067] [ 73.825316][ T5067] ? show_regs+0x8f/0xa0 [ 73.829568][ T5067] ? die_addr+0x4f/0xd0 [ 73.833746][ T5067] ? exc_general_protection+0x155/0x230 [ 73.839397][ T5067] ? asm_exc_general_protection+0x26/0x30 [ 73.845297][ T5067] ? hlock_class+0x4e/0x130 [ 73.849979][ T5067] ? do_pagemap_scan+0xa89/0xcd0 [ 73.855095][ T5067] ? show_smaps_rollup+0x8f0/0x8f0 [ 73.860214][ T5067] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 73.866218][ T5067] do_pagemap_cmd+0x5e/0x80 [ 73.870743][ T5067] ? do_pagemap_scan+0xcd0/0xcd0 [ 73.875758][ T5067] __x64_sys_ioctl+0x18f/0x210 [ 73.880522][ T5067] do_syscall_64+0x40/0x110 [ 73.885037][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 73.891099][ T5067] RIP: 0033:0x7fe720e09bf9 [ 73.895499][ T5067] 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 [ 73.915097][ T5067] RSP: 002b:00007fffa06229e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.923510][ T5067] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe720e09bf9 [ 73.931469][ T5067] RDX: 0000000020000180 RSI: 00000000c0606610 RDI: 0000000000000004 [ 73.939445][ T5067] RBP: 00007fe720e7c5f0 R08: 00007fffa0622694 R09: 0000000000000006 [ 73.947407][ T5067] R10: 0000000000000014 R11: 0000000000000246 R12: 0000000000000001 [ 73.955363][ T5067] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 73.963335][ T5067] [ 73.966426][ T5067] Modules linked in: [ 73.970587][ T5067] ---[ end trace 0000000000000000 ]--- [ 73.976366][ T5067] RIP: 0010:do_pagemap_scan+0xa89/0xcd0 [ 73.981953][ T5067] 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 [ 74.001599][ T5067] RSP: 0018:ffffc9000411fcf0 EFLAGS: 00010202 [ 74.007711][ T5067] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8167148e [ 74.015672][ T5067] RDX: 00000000000000fe RSI: ffffffff8accb1c0 RDI: 00000000000007f0 [ 74.023669][ T5067] RBP: 0000000020ffc000 R08: 0000000000000000 R09: fffffbfff23e37d2 [ 74.031754][ T5067] R10: ffffffff91f1be97 R11: 0000000000000000 R12: 000000000000230e [ 74.039950][ T5067] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 74.047983][ T5067] FS: 000055555583b380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 74.057039][ T5067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.063630][ T5067] CR2: 00007fffa06229e8 CR3: 000000007bf55000 CR4: 00000000003506f0 [ 74.071646][ T5067] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.079728][ T5067] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.087737][ T5067] Kernel panic - not syncing: Fatal exception [ 74.093895][ T5067] Kernel Offset: disabled [ 74.098338][ T5067] Rebooting in 86400 seconds..