./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor690771785 <...> Warning: Permanently added '10.128.1.98' (ECDSA) to the list of known hosts. execve("./syz-executor690771785", ["./syz-executor690771785"], 0x7fffee826da0 /* 10 vars */) = 0 brk(NULL) = 0x555556955000 brk(0x555556955c40) = 0x555556955c40 arch_prctl(ARCH_SET_FS, 0x555556955300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor690771785", 4096) = 27 brk(0x555556976c40) = 0x555556976c40 brk(0x555556977000) = 0x555556977000 mprotect(0x7f61c4e3f000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f61bc967000 write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\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\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 munmap(0x7f61bc967000, 2097152) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "ntfs", 0, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 syzkaller login: [ 50.579188][ T5076] loop0: detected capacity change from 0 to 4096 [ 50.594235][ T5076] ntfs: volume version 3.1. [ 50.607246][ T5076] ------------[ cut here ]------------ [ 50.612853][ T5076] kernel BUG at fs/ntfs/inode.c:2536! [ 50.618796][ T5076] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 50.624886][ T5076] CPU: 0 PID: 5076 Comm: syz-executor690 Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6 #0 [ 50.635296][ T5076] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 50.645677][ T5076] RIP: 0010:ntfs_truncate+0x269f/0x2720 [ 50.651221][ T5076] Code: 20 80 e1 07 80 c1 03 38 c1 0f 8c c8 f8 ff ff 48 8b 7c 24 20 e8 72 f3 1a ff e9 b9 f8 ff ff e8 98 4b c5 fe 0f 0b e8 91 4b c5 fe <0f> 0b e8 8a 4b c5 fe 0f 0b e8 83 4b c5 fe 0f 0b e8 7c 4b c5 fe 0f [ 50.670806][ T5076] RSP: 0018:ffffc90003c8fae0 EFLAGS: 00010293 [ 50.676851][ T5076] RAX: ffffffff82c68fdf RBX: 00000000ffffffe4 RCX: ffff888029970000 [ 50.684802][ T5076] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: 0000000000000000 [ 50.692754][ T5076] RBP: ffff8880786b7380 R08: ffffffff82c670dd R09: ffffed100f0d6e7b [ 50.700703][ T5076] R10: ffffed100f0d6e7b R11: 1ffff1100f0d6e7a R12: dffffc0000000000 [ 50.708652][ T5076] R13: ffff8880786b7380 R14: ffff8880786b7380 R15: 0000000000000000 [ 50.716602][ T5076] FS: 0000555556955300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 50.725511][ T5076] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.732073][ T5076] CR2: 0000000020000040 CR3: 0000000028ee7000 CR4: 00000000003506f0 [ 50.740024][ T5076] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.747972][ T5076] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.755919][ T5076] Call Trace: [ 50.759177][ T5076] [ 50.762100][ T5076] ntfs_setattr+0x2b9/0x3a0 [ 50.766588][ T5076] ? ntfs_truncate_vfs+0x20/0x20 [ 50.771502][ T5076] notify_change+0xe50/0x1100 [ 50.776167][ T5076] do_truncate+0x200/0x2f0 [ 50.780562][ T5076] ? put_page_bootmem+0x2d0/0x2d0 [ 50.785569][ T5076] ? bpf_lsm_path_truncate+0x5/0x10 [ 50.790769][ T5076] vfs_truncate+0x299/0x360 [ 50.795273][ T5076] do_sys_truncate+0xcb/0x180 [ 50.799942][ T5076] ? break_lease+0xd0/0xd0 [ 50.804340][ T5076] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 50.810310][ T5076] ? syscall_enter_from_user_mode+0x86/0x1d0 [ 50.816267][ T5076] do_syscall_64+0x3d/0xb0 [ 50.820667][ T5076] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.826544][ T5076] RIP: 0033:0x7f61c4db3769 [ 50.830939][ T5076] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 50.852075][ T5076] RSP: 002b:00007ffc056b7c28 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 50.860627][ T5076] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f61c4db3769 [ 50.869369][ T5076] RDX: 00007f61c4d71de3 RSI: 0000000000000000 RDI: 0000000020000040 [ 50.877324][ T5076] RBP: 00007f61c4d73000 R08: 000000000001f1cf R09: 0000000000000000 [ 50.885274][ T5076] R10: 00007ffc056b7af0 R11: 0000000000000246 R12: 00007f61c4d73090 [ 50.893224][ T5076] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 50.901439][ T5076] [ 50.904439][ T5076] Modules linked in: [ 50.908659][ T5076] ---[ end trace 0000000000000000 ]--- [ 50.914131][ T5076] RIP: 0010:ntfs_truncate+0x269f/0x2720 [ 50.919751][ T5076] Code: 20 80 e1 07 80 c1 03 38 c1 0f 8c c8 f8 ff ff 48 8b 7c 24 20 e8 72 f3 1a ff e9 b9 f8 ff ff e8 98 4b c5 fe 0f 0b e8 91 4b c5 fe <0f> 0b e8 8a 4b c5 fe 0f 0b e8 83 4b c5 fe 0f 0b e8 7c 4b c5 fe 0f [ 50.939402][ T5076] RSP: 0018:ffffc90003c8fae0 EFLAGS: 00010293 [ 50.945504][ T5076] RAX: ffffffff82c68fdf RBX: 00000000ffffffe4 RCX: ffff888029970000 [ 50.953469][ T5076] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: 0000000000000000 [ 50.961463][ T5076] RBP: ffff8880786b7380 R08: ffffffff82c670dd R09: ffffed100f0d6e7b [ 50.969451][ T5076] R10: ffffed100f0d6e7b R11: 1ffff1100f0d6e7a R12: dffffc0000000000 [ 50.977456][ T5076] R13: ffff8880786b7380 R14: ffff8880786b7380 R15: 0000000000000000 [ 50.985619][ T5076] FS: 0000555556955300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 50.994528][ T5076] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.001168][ T5076] CR2: 0000000020000040 CR3: 0000000028ee7000 CR4: 00000000003506f0 [ 51.009157][ T5076] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.017238][ T5076] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.025243][ T5076] Kernel panic - not syncing: Fatal exception [ 51.031481][ T5076] Kernel Offset: disabled [ 51.035795][ T5076] Rebooting in 86400 seconds..