./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1713958752 <...> Warning: Permanently added '10.128.0.42' (ED25519) to the list of known hosts. execve("./syz-executor1713958752", ["./syz-executor1713958752"], 0x7ffc92e1c020 /* 10 vars */) = 0 brk(NULL) = 0x55558e71f000 brk(0x55558e71fd00) = 0x55558e71fd00 arch_prctl(ARCH_SET_FS, 0x55558e71f380) = 0 set_tid_address(0x55558e71f650) = 5824 set_robust_list(0x55558e71f660, 24) = 0 rseq(0x55558e71fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1713958752", 4096) = 28 getrandom("\xac\x7c\x4a\xc1\x14\xb7\x16\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558e71fd00 brk(0x55558e740d00) = 0x55558e740d00 brk(0x55558e741000) = 0x55558e741000 mprotect(0x7fe0317f4000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe029200000 write(3, "\x58\x46\x53\x42\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xbf\xdc\x47\xfc\x10\xd8\x4e\xed\xa5\x62\x11\xa8\x31\xb3\xf7\x91\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x24\x40\x00\x00\x00\x00\x00\x00\x24\x41\x00\x00\x00\x00\x00\x00\x24\x42\x00\x00\x00\x02\x00\x00\x20\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x12\x00"..., 16777216) = 16777216 munmap(0x7fe029200000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 [ 89.570345][ T5824] loop0: detected capacity change from 0 to 32768 [ 89.608095][ T5824] XFS: ikeep mount option is deprecated. [ 89.661512][ T5824] XFS (loop0): Mounting V5 Filesystem bfdc47fc-10d8-4eed-a562-11a831b3f791 mount("/dev/loop0", "./file1", "xfs", MS_NODIRATIME|MS_RELATIME, "filestreams,pquota,qnoenforce,ikeep,gqnoenforce,nodiscard,,nouuid") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 chdir("./file1") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 89.714815][ T5824] XFS (loop0): Ending clean mount [ 89.725806][ T5824] XFS (loop0): Quotacheck needed: Please wait. [ 89.751072][ T5824] XFS (loop0): Quotacheck: Done. [ 89.763127][ T5824] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI [ 89.775048][ T5824] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 89.783580][ T5824] CPU: 0 UID: 0 PID: 5824 Comm: syz-executor171 Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 PREEMPT(full) [ 89.795991][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.806055][ T5824] RIP: 0010:do_move_mount+0x27d/0xb10 [ 89.811459][ T5824] Code: e8 98 53 85 ff 41 be ea ff ff ff 49 bd 00 00 00 00 00 fc ff df 48 8b 6c 24 18 4c 8b 7c 24 08 48 8d 5d 48 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 54 22 e5 ff 48 8b 1b 31 ff 48 89 [ 89.831068][ T5824] RSP: 0018:ffffc9000408fd50 EFLAGS: 00010206 [ 89.837222][ T5824] RAX: 0000000000000006 RBX: 0000000000000032 RCX: ffff88802db83c00 [ 89.845188][ T5824] RDX: 0000000000000000 RSI: ffffffff8d9214e1 RDI: ffff888141aa4b78 [ 89.853174][ T5824] RBP: ffffffffffffffea R08: 0000000000000000 R09: 0000000000000000 [ 89.861171][ T5824] R10: 0000000000000000 R11: ffffffff8238eb99 R12: ffffffff8dde9718 [ 89.869152][ T5824] R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff888032e6a880 [ 89.877219][ T5824] FS: 000055558e71f380(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 [ 89.886156][ T5824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.892749][ T5824] CR2: 000000000066c7e0 CR3: 000000003275c000 CR4: 00000000003526f0 [ 89.900735][ T5824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.908724][ T5824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.916718][ T5824] Call Trace: [ 89.920008][ T5824] [ 89.922955][ T5824] __se_sys_move_mount+0x41e/0x580 [ 89.928092][ T5824] ? __pfx___se_sys_move_mount+0x10/0x10 [ 89.933733][ T5824] ? __x64_sys_move_mount+0x20/0xc0 [ 89.938938][ T5824] do_syscall_64+0xf6/0x210 [ 89.943464][ T5824] ? clear_bhb_loop+0x45/0xa0 [ 89.948148][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.954085][ T5824] RIP: 0033:0x7fe031778739 [ 89.958520][ T5824] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 89.978132][ T5824] RSP: 002b:00007ffc116205e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad [ 89.986554][ T5824] RAX: ffffffffffffffda RBX: 00007ffc116207b8 RCX: 00007fe031778739 [ 89.994543][ T5824] RDX: 00000000ffffff9c RSI: 0000000000000000 RDI: 0000000000000000 [ 90.002520][ T5824] RBP: 00007fe0317f4610 R08: 0000000000000224 R09: 00007ffc116207b8 [ 90.010496][ T5824] R10: 0000200000000040 R11: 0000000000000246 R12: 0000000000000001 [ 90.018481][ T5824] R13: 00007ffc116207a8 R14: 0000000000000001 R15: 0000000000000001 [ 90.026464][ T5824] [ 90.029488][ T5824] Modules linked in: [ 90.033569][ T5824] ---[ end trace 0000000000000000 ]--- [ 90.039289][ T5824] RIP: 0010:do_move_mount+0x27d/0xb10 [ 90.044709][ T5824] Code: e8 98 53 85 ff 41 be ea ff ff ff 49 bd 00 00 00 00 00 fc ff df 48 8b 6c 24 18 4c 8b 7c 24 08 48 8d 5d 48 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 54 22 e5 ff 48 8b 1b 31 ff 48 89 [ 90.064376][ T5824] RSP: 0018:ffffc9000408fd50 EFLAGS: 00010206 [ 90.070886][ T5824] RAX: 0000000000000006 RBX: 0000000000000032 RCX: ffff88802db83c00 [ 90.078913][ T5824] RDX: 0000000000000000 RSI: ffffffff8d9214e1 RDI: ffff888141aa4b78 [ 90.086989][ T5824] RBP: ffffffffffffffea R08: 0000000000000000 R09: 0000000000000000 [ 90.094965][ T5824] R10: 0000000000000000 R11: ffffffff8238eb99 R12: ffffffff8dde9718 [ 90.103024][ T5824] R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff888032e6a880 [ 90.111058][ T5824] FS: 000055558e71f380(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 [ 90.120029][ T5824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.126631][ T5824] CR2: 000000000066c7e0 CR3: 000000003275c000 CR4: 00000000003526f0 [ 90.134669][ T5824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.142695][ T5824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.150744][ T5824] Kernel panic - not syncing: Fatal exception [ 90.159077][ T5824] Kernel Offset: disabled [ 90.163403][ T5824] Rebooting in 86400 seconds..