./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor601327961 <...> Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts. execve("./syz-executor601327961", ["./syz-executor601327961"], 0x7ffc4944b9f0 /* 10 vars */) = 0 brk(NULL) = 0x55555704a000 brk(0x55555704ac40) = 0x55555704ac40 arch_prctl(ARCH_SET_FS, 0x55555704a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor601327961", 4096) = 27 brk(0x55555706bc40) = 0x55555706bc40 brk(0x55555706c000) = 0x55555706c000 mprotect(0x7fe53e5f5000, 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 getpid() = 5068 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "5068", 4) = 4 close(3) = 0 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe53611b000 write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x20\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x03\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf4\x00\x00\x00\xf4\x00\x00\x00\x92\x9d\x3e\x59\x8b\x7e\x69\x31\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 4194304) = 4194304 munmap(0x7fe53611b000, 4194304) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file1", 0777) = 0 syzkaller login: [ 54.886227][ T5068] loop0: detected capacity change from 0 to 8192 [ 54.897060][ T5068] ntfs3: loop0: Different NTFS' sector size (4096) and media sector size (512) [ 54.911219][ T5068] ================================================================== [ 54.919272][ T5068] BUG: KASAN: use-after-free in mi_enum_attr+0x605/0x640 [ 54.926465][ T5068] Read of size 4 at addr ffff888178628047 by task syz-executor601/5068 [ 54.934678][ T5068] [ 54.936980][ T5068] CPU: 0 PID: 5068 Comm: syz-executor601 Not tainted 6.1.0-syzkaller-10971-g041fae9c105a #0 [ 54.947020][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 54.957053][ T5068] Call Trace: [ 54.960310][ T5068] [ 54.963219][ T5068] dump_stack_lvl+0xd1/0x138 [ 54.967797][ T5068] print_report+0x15e/0x45d [ 54.972283][ T5068] ? __phys_addr+0xc8/0x140 [ 54.976773][ T5068] ? mi_enum_attr+0x605/0x640 [ 54.981431][ T5068] kasan_report+0xbf/0x1f0 [ 54.985829][ T5068] ? mi_enum_attr+0x605/0x640 [ 54.990486][ T5068] mi_enum_attr+0x605/0x640 [ 54.994967][ T5068] ni_enum_attr_ex+0x31d/0x400 [ 54.999718][ T5068] ? ntfs_read_bh+0x52/0xb0 [ 55.004204][ T5068] ? ni_fname_type.part.0+0x1e0/0x1e0 [ 55.009560][ T5068] ? mi_read+0x283/0x5b0 [ 55.013785][ T5068] ntfs_iget5+0xac0/0x3280 [ 55.018187][ T5068] ? ntfs_write_end+0x800/0x800 [ 55.023025][ T5068] ? destroy_inode+0xc4/0x1b0 [ 55.027694][ T5068] ? iput.part.0+0x59b/0x880 [ 55.032280][ T5068] ntfs_fill_super+0x1ff5/0x3860 [ 55.037212][ T5068] ? put_ntfs+0x330/0x330 [ 55.041533][ T5068] ? set_blocksize+0x2c9/0x370 [ 55.046294][ T5068] get_tree_bdev+0x444/0x760 [ 55.050875][ T5068] ? put_ntfs+0x330/0x330 [ 55.055192][ T5068] vfs_get_tree+0x8d/0x2f0 [ 55.059598][ T5068] path_mount+0x132a/0x1e20 [ 55.064090][ T5068] ? kmem_cache_free+0xee/0x5c0 [ 55.068924][ T5068] ? finish_automount+0x960/0x960 [ 55.073937][ T5068] ? putname+0x102/0x140 [ 55.078169][ T5068] __x64_sys_mount+0x283/0x300 [ 55.082927][ T5068] ? copy_mnt_ns+0xb30/0xb30 [ 55.087504][ T5068] ? lockdep_hardirqs_on+0x7d/0x100 [ 55.092692][ T5068] ? _raw_spin_unlock_irq+0x2e/0x50 [ 55.097886][ T5068] ? ptrace_notify+0xfe/0x140 [ 55.102547][ T5068] do_syscall_64+0x39/0xb0 [ 55.106947][ T5068] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.112831][ T5068] RIP: 0033:0x7fe53e57093a [ 55.117228][ T5068] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 55.137011][ T5068] RSP: 002b:00007ffc3f7e30f8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 55.145408][ T5068] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe53e57093a [ 55.153362][ T5068] RDX: 0000000020020bc0 RSI: 0000000020020c00 RDI: 00007ffc3f7e3110 [ 55.161320][ T5068] RBP: 00007ffc3f7e3110 R08: 00007ffc3f7e3150 R09: 0000000000020b9f [ 55.169274][ T5068] R10: 0000000000018882 R11: 0000000000000286 R12: 0000000000000004 [ 55.177228][ T5068] R13: 000055555704a2c0 R14: 0000000000018882 R15: 00007ffc3f7e3150 [ 55.185186][ T5068] [ 55.188193][ T5068] [ 55.190496][ T5068] The buggy address belongs to the physical page: [ 55.196887][ T5068] page:ffffea0005e18a00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x178628 [ 55.207109][ T5068] flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff) [ 55.214290][ T5068] raw: 057ff00000000000 ffffea0005e18a08 ffffea0005e18a08 0000000000000000 [ 55.222857][ T5068] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 55.231418][ T5068] page dumped because: kasan: bad access detected [ 55.237820][ T5068] page_owner info is not present (never set?) [ 55.243858][ T5068] [ 55.246162][ T5068] Memory state around the buggy address: [ 55.251771][ T5068] ffff888178627f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.259814][ T5068] ffff888178627f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.267858][ T5068] >ffff888178628000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.275898][ T5068] ^ [ 55.282114][ T5068] ffff888178628080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.290153][ T5068] ffff888178628100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.298191][ T5068] ================================================================== [ 55.306672][ T5068] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 55.313873][ T5068] CPU: 0 PID: 5068 Comm: syz-executor601 Not tainted 6.1.0-syzkaller-10971-g041fae9c105a #0 [ 55.324005][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.334044][ T5068] Call Trace: [ 55.337305][ T5068] [ 55.340217][ T5068] dump_stack_lvl+0xd1/0x138 [ 55.344804][ T5068] panic+0x2cc/0x626 [ 55.348687][ T5068] ? panic_print_sys_info.part.0+0x110/0x110 [ 55.354750][ T5068] ? preempt_schedule_thunk+0x1a/0x20 [ 55.360112][ T5068] ? preempt_schedule_common+0x59/0xc0 [ 55.365560][ T5068] check_panic_on_warn.cold+0x19/0x35 [ 55.370919][ T5068] end_report.part.0+0x36/0x73 [ 55.375677][ T5068] ? mi_enum_attr+0x605/0x640 [ 55.380344][ T5068] kasan_report.cold+0xa/0xf [ 55.384925][ T5068] ? mi_enum_attr+0x605/0x640 [ 55.389592][ T5068] mi_enum_attr+0x605/0x640 [ 55.394083][ T5068] ni_enum_attr_ex+0x31d/0x400 [ 55.398838][ T5068] ? ntfs_read_bh+0x52/0xb0 [ 55.403329][ T5068] ? ni_fname_type.part.0+0x1e0/0x1e0 [ 55.408692][ T5068] ? mi_read+0x283/0x5b0 [ 55.412927][ T5068] ntfs_iget5+0xac0/0x3280 [ 55.417331][ T5068] ? ntfs_write_end+0x800/0x800 [ 55.422169][ T5068] ? destroy_inode+0xc4/0x1b0 [ 55.426836][ T5068] ? iput.part.0+0x59b/0x880 [ 55.431417][ T5068] ntfs_fill_super+0x1ff5/0x3860 [ 55.436352][ T5068] ? put_ntfs+0x330/0x330 [ 55.440669][ T5068] ? set_blocksize+0x2c9/0x370 [ 55.445427][ T5068] get_tree_bdev+0x444/0x760 [ 55.450005][ T5068] ? put_ntfs+0x330/0x330 [ 55.454323][ T5068] vfs_get_tree+0x8d/0x2f0 [ 55.458727][ T5068] path_mount+0x132a/0x1e20 [ 55.463223][ T5068] ? kmem_cache_free+0xee/0x5c0 [ 55.468058][ T5068] ? finish_automount+0x960/0x960 [ 55.473071][ T5068] ? putname+0x102/0x140 [ 55.477304][ T5068] __x64_sys_mount+0x283/0x300 [ 55.482055][ T5068] ? copy_mnt_ns+0xb30/0xb30 [ 55.486634][ T5068] ? lockdep_hardirqs_on+0x7d/0x100 [ 55.491823][ T5068] ? _raw_spin_unlock_irq+0x2e/0x50 [ 55.497013][ T5068] ? ptrace_notify+0xfe/0x140 [ 55.501675][ T5068] do_syscall_64+0x39/0xb0 [ 55.506167][ T5068] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.512050][ T5068] RIP: 0033:0x7fe53e57093a [ 55.516447][ T5068] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 55.536039][ T5068] RSP: 002b:00007ffc3f7e30f8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 55.544434][ T5068] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe53e57093a [ 55.552389][ T5068] RDX: 0000000020020bc0 RSI: 0000000020020c00 RDI: 00007ffc3f7e3110 [ 55.560350][ T5068] RBP: 00007ffc3f7e3110 R08: 00007ffc3f7e3150 R09: 0000000000020b9f [ 55.568312][ T5068] R10: 0000000000018882 R11: 0000000000000286 R12: 0000000000000004 [ 55.576271][ T5068] R13: 000055555704a2c0 R14: 0000000000018882 R15: 00007ffc3f7e3150 [ 55.584233][ T5068] [ 55.588031][ T5068] Kernel Offset: disabled [ 55.592338][ T5068] Rebooting in 86400 seconds..