./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3581330103 <...> Warning: Permanently added '10.128.0.116' (ED25519) to the list of known hosts. execve("./syz-executor3581330103", ["./syz-executor3581330103"], 0x7fff555f8a30 /* 10 vars */) = 0 brk(NULL) = 0x555582a39000 brk(0x555582a39d00) = 0x555582a39d00 arch_prctl(ARCH_SET_FS, 0x555582a39380) = 0 set_tid_address(0x555582a39650) = 5821 set_robust_list(0x555582a39660, 24) = 0 rseq(0x555582a39ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3581330103", 4096) = 28 getrandom("\x21\x17\x56\xb5\x92\x6f\x1a\x4a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582a39d00 brk(0x555582a5ad00) = 0x555582a5ad00 brk(0x555582a5b000) = 0x555582a5b000 mprotect(0x7effb3f78000, 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) = 0x7effaba00000 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(0x7effaba00000, 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 [ 74.160629][ T5821] loop0: detected capacity change from 0 to 32768 [ 74.203485][ T5821] XFS: ikeep mount option is deprecated. [ 74.229257][ T5821] 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) [ 74.275915][ T5821] XFS (loop0): Ending clean mount [ 74.286242][ T5821] XFS (loop0): Quotacheck needed: Please wait. [ 74.310538][ T5821] XFS (loop0): Quotacheck: Done. [ 74.349520][ T5821] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI [ 74.361424][ T5821] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 74.369833][ T5821] CPU: 1 UID: 0 PID: 5821 Comm: syz-executor358 Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 PREEMPT(full) [ 74.382230][ T5821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 74.392266][ T5821] RIP: 0010:do_move_mount+0x27d/0xb10 [ 74.397636][ T5821] 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 [ 74.417316][ T5821] RSP: 0018:ffffc90004197d50 EFLAGS: 00010206 [ 74.423382][ T5821] RAX: 0000000000000006 RBX: 0000000000000032 RCX: ffff888034268000 [ 74.431344][ T5821] RDX: 0000000000000000 RSI: ffffffff8d9214e1 RDI: ffff88801b2d77b8 [ 74.439304][ T5821] RBP: ffffffffffffffea R08: 0000000000000000 R09: 0000000000000000 [ 74.447263][ T5821] R10: 0000000000000000 R11: ffffffff8238eb99 R12: ffffffff8dde9718 [ 74.455310][ T5821] R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff88803401e480 [ 74.463273][ T5821] FS: 0000555582a39380(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 [ 74.472193][ T5821] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.478773][ T5821] CR2: 000000000066c7e0 CR3: 000000003414c000 CR4: 00000000003526f0 [ 74.486738][ T5821] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.494731][ T5821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.502694][ T5821] Call Trace: [ 74.506050][ T5821] [ 74.508978][ T5821] __se_sys_move_mount+0x41e/0x580 [ 74.514099][ T5821] ? __pfx___se_sys_move_mount+0x10/0x10 [ 74.519718][ T5821] ? __x64_sys_move_mount+0x20/0xc0 [ 74.524903][ T5821] do_syscall_64+0xf6/0x210 [ 74.529410][ T5821] ? clear_bhb_loop+0x45/0xa0 [ 74.534082][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.540005][ T5821] RIP: 0033:0x7effb3efc739 [ 74.544453][ T5821] 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 [ 74.564148][ T5821] RSP: 002b:00007ffcb2b585e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad [ 74.572557][ T5821] RAX: ffffffffffffffda RBX: 00007ffcb2b587b8 RCX: 00007effb3efc739 [ 74.580519][ T5821] RDX: 00000000ffffff9c RSI: 0000000000000000 RDI: 0000000000000000 [ 74.588479][ T5821] RBP: 00007effb3f78610 R08: 0000000000000224 R09: 00007ffcb2b587b8 [ 74.596437][ T5821] R10: 0000200000000040 R11: 0000000000000246 R12: 0000000000000001 [ 74.604395][ T5821] R13: 00007ffcb2b587a8 R14: 0000000000000001 R15: 0000000000000001 [ 74.612362][ T5821] [ 74.615368][ T5821] Modules linked in: [ 74.619529][ T5821] ---[ end trace 0000000000000000 ]--- [ 74.625322][ T5821] RIP: 0010:do_move_mount+0x27d/0xb10 [ 74.630710][ T5821] 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 [ 74.650418][ T5821] RSP: 0018:ffffc90004197d50 EFLAGS: 00010206 [ 74.656518][ T5821] RAX: 0000000000000006 RBX: 0000000000000032 RCX: ffff888034268000 [ 74.664567][ T5821] RDX: 0000000000000000 RSI: ffffffff8d9214e1 RDI: ffff88801b2d77b8 [ 74.672596][ T5821] RBP: ffffffffffffffea R08: 0000000000000000 R09: 0000000000000000 [ 74.680553][ T5821] R10: 0000000000000000 R11: ffffffff8238eb99 R12: ffffffff8dde9718 [ 74.688554][ T5821] R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff88803401e480 [ 74.696560][ T5821] FS: 0000555582a39380(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 [ 74.705534][ T5821] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.712203][ T5821] CR2: 000000000066c7e0 CR3: 000000003414c000 CR4: 00000000003526f0 [ 74.720204][ T5821] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.728215][ T5821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.736240][ T5821] Kernel panic - not syncing: Fatal exception [ 74.742548][ T5821] Kernel Offset: disabled [ 74.746860][ T5821] Rebooting in 86400 seconds..