./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3076417530 <...> DUID 00:04:7a:dc:29:a2:f4:b1:6d:28:30:de:a7:64:4f:eb:cd:90 forked to background, child pid 4660 [ 30.401199][ T4661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.415426][ T4661] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.15.211' (ECDSA) to the list of known hosts. execve("./syz-executor3076417530", ["./syz-executor3076417530"], 0x7ffe5493efd0 /* 10 vars */) = 0 brk(NULL) = 0x555557364000 brk(0x555557364c40) = 0x555557364c40 arch_prctl(ARCH_SET_FS, 0x555557364300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3076417530", 4096) = 28 brk(0x555557385c40) = 0x555557385c40 brk(0x555557386000) = 0x555557386000 mprotect(0x7f5226ab9000, 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) = 0x7f521e5e1000 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(0x7f521e5e1000, 2097152) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 syzkaller login: [ 55.255940][ T4992] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4992 'syz-executor307' [ 55.290821][ T4992] loop0: detected capacity change from 0 to 4096 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 [ 55.309257][ T4992] ntfs: volume version 3.1. [ 55.334704][ T4992] ------------[ cut here ]------------ [ 55.340293][ T4992] kernel BUG at fs/ntfs/inode.c:2536! [ 55.346453][ T4992] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 55.352533][ T4992] CPU: 0 PID: 4992 Comm: syz-executor307 Not tainted 6.4.0-rc7-syzkaller-00072-gdad9774deaf1 #0 [ 55.362930][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 55.372969][ T4992] RIP: 0010:ntfs_truncate+0x27e4/0x2870 [ 55.378518][ T4992] Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c a7 f8 ff ff 48 8b 7c 24 08 e8 cd 8d 1e ff e9 98 f8 ff ff e8 03 b6 c6 fe 0f 0b e8 fc b5 c6 fe <0f> 0b e8 f5 b5 c6 fe 0f 0b e8 ee b5 c6 fe 0f 0b e8 e7 b5 c6 fe 0f [ 55.398105][ T4992] RSP: 0018:ffffc90003a4fad8 EFLAGS: 00010293 [ 55.404163][ T4992] RAX: ffffffff82c4c9f4 RBX: 00000000ffffffe4 RCX: ffff888020f3bb80 [ 55.412136][ T4992] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: 0000000000000000 [ 55.420094][ T4992] RBP: 0000000000000000 R08: ffffffff82c4a9c3 R09: ffffed100f162113 [ 55.428048][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888078b10840 [ 55.435997][ T4992] R13: ffff888078b10890 R14: dffffc0000000000 R15: ffff888022561200 [ 55.443948][ T4992] FS: 0000555557364300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 55.452855][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.459417][ T4992] CR2: 00007f9669eb5ae0 CR3: 00000000213a0000 CR4: 00000000003506f0 [ 55.467388][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.475345][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.483301][ T4992] Call Trace: [ 55.486561][ T4992] [ 55.489474][ T4992] ? __die_body+0x5e/0xa0 [ 55.493785][ T4992] ? die+0x87/0xb0 [ 55.497482][ T4992] ? do_trap+0x11e/0x350 [ 55.501704][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.506655][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.511577][ T4992] ? do_error_trap+0x141/0x1f0 [ 55.516413][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.521330][ T4992] ? do_int3+0x30/0x30 [ 55.525382][ T4992] ? handle_invalid_op+0x2c/0x40 [ 55.530297][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.535216][ T4992] ? exc_invalid_op+0x33/0x50 [ 55.539893][ T4992] ? asm_exc_invalid_op+0x1a/0x20 [ 55.544912][ T4992] ? ntfs_truncate+0x7b3/0x2870 [ 55.549752][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.554674][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.559595][ T4992] ? ntfs_truncate+0x27e4/0x2870 [ 55.564519][ T4992] ntfs_setattr+0x2cb/0x3b0 [ 55.569002][ T4992] ? ntfs_truncate_vfs+0x20/0x20 [ 55.573920][ T4992] notify_change+0xc8b/0xf40 [ 55.578491][ T4992] do_truncate+0x220/0x300 [ 55.582908][ T4992] ? put_page_bootmem+0x2e0/0x2e0 [ 55.587914][ T4992] ? bpf_lsm_path_truncate+0x9/0x10 [ 55.593088][ T4992] vfs_truncate+0x2e1/0x3a0 [ 55.597569][ T4992] do_sys_truncate+0xde/0x190 [ 55.602225][ T4992] ? break_lease+0xd0/0xd0 [ 55.606761][ T4992] ? syscall_enter_from_user_mode+0x32/0x230 [ 55.612738][ T4992] ? syscall_enter_from_user_mode+0x8c/0x230 [ 55.618707][ T4992] do_syscall_64+0x41/0xc0 [ 55.623107][ T4992] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.628982][ T4992] RIP: 0033:0x7f5226a2d789 [ 55.633376][ T4992] 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 [ 55.652961][ T4992] RSP: 002b:00007fff14ce6c48 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 55.661375][ T4992] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5226a2d789 [ 55.669343][ T4992] RDX: 00007f52269ebe03 RSI: 0000000000000000 RDI: 0000000020000040 [ 55.677295][ T4992] RBP: 00007f52269ed020 R08: 000000000001f1cf R09: 0000000000000000 [ 55.685246][ T4992] R10: 00007fff14ce6b10 R11: 0000000000000246 R12: 00007f52269ed0b0 [ 55.693194][ T4992] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.701147][ T4992] [ 55.704151][ T4992] Modules linked in: [ 55.708296][ T4992] ---[ end trace 0000000000000000 ]--- [ 55.713911][ T4992] RIP: 0010:ntfs_truncate+0x27e4/0x2870 [ 55.719489][ T4992] Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c a7 f8 ff ff 48 8b 7c 24 08 e8 cd 8d 1e ff e9 98 f8 ff ff e8 03 b6 c6 fe 0f 0b e8 fc b5 c6 fe <0f> 0b e8 f5 b5 c6 fe 0f 0b e8 ee b5 c6 fe 0f 0b e8 e7 b5 c6 fe 0f [ 55.739140][ T4992] RSP: 0018:ffffc90003a4fad8 EFLAGS: 00010293 [ 55.745239][ T4992] RAX: ffffffff82c4c9f4 RBX: 00000000ffffffe4 RCX: ffff888020f3bb80 [ 55.753193][ T4992] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: 0000000000000000 [ 55.761175][ T4992] RBP: 0000000000000000 R08: ffffffff82c4a9c3 R09: ffffed100f162113 [ 55.769165][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888078b10840 [ 55.777153][ T4992] R13: ffff888078b10890 R14: dffffc0000000000 R15: ffff888022561200 [ 55.785150][ T4992] FS: 0000555557364300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 55.794095][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.800678][ T4992] CR2: 00007f9669eb5ae0 CR3: 00000000213a0000 CR4: 00000000003506f0 [ 55.808674][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.816666][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.824822][ T4992] Kernel panic - not syncing: Fatal exception [ 55.831065][ T4992] Kernel Offset: disabled [ 55.835378][ T4992] Rebooting in 86400 seconds..