./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3434274279 <...> Warning: Permanently added '10.128.0.73' (ED25519) to the list of known hosts. execve("./syz-executor3434274279", ["./syz-executor3434274279"], 0x7ffc41e0b210 /* 10 vars */) = 0 brk(NULL) = 0x55556ec17000 brk(0x55556ec17d00) = 0x55556ec17d00 arch_prctl(ARCH_SET_FS, 0x55556ec17380) = 0 set_tid_address(0x55556ec17650) = 5830 set_robust_list(0x55556ec17660, 24) = 0 rseq(0x55556ec17ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3434274279", 4096) = 28 getrandom("\xc0\xf4\xa6\xcb\x41\xc2\xa3\x5f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556ec17d00 brk(0x55556ec38d00) = 0x55556ec38d00 brk(0x55556ec39000) = 0x55556ec39000 mprotect(0x7f6df4a8d000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5832 attached [pid 5832] set_robust_list(0x55556ec17660, 24 [pid 5830] <... clone resumed>, child_tidptr=0x55556ec17650) = 5832 [pid 5832] <... set_robust_list resumed>) = 0 [pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5832] setpgid(0, 0) = 0 [pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5832] write(3, "1000", 4) = 4 [pid 5832] close(3) = 0 executing program [pid 5832] write(1, "executing program\n", 18) = 18 [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6dec400000 [pid 5832] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5832] munmap(0x7f6dec400000, 138412032) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5832] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5832] close(3) = 0 [pid 5832] close(4) = 0 [pid 5832] mkdir("./file0", 0777) = 0 [ 88.441427][ T5832] loop0: detected capacity change from 0 to 512 [ 88.490753][ T5832] EXT4-fs (loop0): revision level too high, forcing read-only mode [ 88.499036][ T5832] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a842c01c, mo2=0002] [ 88.507202][ T5832] System zones: 1-12 [ 88.512973][ T5832] EXT4-fs (loop0): orphan cleanup on readonly fs [ 88.521081][ T5832] EXT4-fs warning (device loop0): ext4_block_to_path:107: block 3279949761 > max in inode 13 [pid 5832] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_SYNCHRONOUS|MS_LAZYTIME|MS_BORN, ",errors=continue") = 0 [pid 5832] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5832] chdir("./file0") = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 88.531833][ T5832] EXT4-fs warning (device loop0): ext4_block_to_path:107: block 3279949762 > max in inode 13 [ 88.544405][ T5832] EXT4-fs (loop0): 1 truncate cleaned up [ 88.551278][ T5832] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 ro without journal. Quota mode: none. [ 88.597087][ T5832] EXT4-fs error (device loop0): ext4_map_blocks:672: inode #2: block 3: comm syz-executor343: lblock 0 mapped to illegal pblock 3 (length 1) [ 88.613368][ T5832] EXT4-fs warning (device loop0): dx_probe:823: inode #2: lblock 0: comm syz-executor343: error -117 reading directory block [ 88.626931][ T5832] BUG: unable to handle page fault for address: ffffffffffffff8b [ 88.634660][ T5832] #PF: supervisor read access in kernel mode [ 88.640636][ T5832] #PF: error_code(0x0000) - not-present page [ 88.646595][ T5832] PGD e93c067 P4D e93c067 PUD e93e067 PMD 0 [ 88.652585][ T5832] Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI [ 88.658675][ T5832] CPU: 1 UID: 0 PID: 5832 Comm: syz-executor343 Not tainted 6.14.0-rc3-next-20250218-syzkaller #0 [ 88.669242][ T5832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 88.679282][ T5832] RIP: 0010:lookup_one_qstr_excl+0x162/0x370 [ 88.685280][ T5832] Code: d3 66 90 48 85 c0 0f 85 58 01 00 00 e8 07 0f 84 ff 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 57 01 00 00 bb 00 00 38 00 <41> 23 1e 44 89 fd 81 e5 00 00 02 00 89 de 09 ee 31 ff e8 17 13 84 [ 88.704896][ T5832] RSP: 0018:ffffc90003eefcb8 EFLAGS: 00010246 [ 88.710953][ T5832] RAX: 0000000000000000 RBX: 0000000000380000 RCX: ffff8880344d0000 [ 88.718911][ T5832] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 [ 88.726873][ T5832] RBP: ffff88807bbabe2c R08: ffff88807bb2298b R09: 1ffff1100f764531 [ 88.734834][ T5832] R10: dffffc0000000000 R11: ffffed100f764532 R12: ffff88807bb228d0 [ 88.742792][ T5832] R13: dffffc0000000000 R14: ffffffffffffff8b R15: 0000000000060000 [ 88.750765][ T5832] FS: 000055556ec17380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 88.759702][ T5832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.766289][ T5832] CR2: ffffffffffffff8b CR3: 000000007dba2000 CR4: 00000000003526f0 [ 88.774262][ T5832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.782236][ T5832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.790223][ T5832] Call Trace: [ 88.793499][ T5832] [ 88.796430][ T5832] ? __die_body+0x5f/0xb0 [ 88.800771][ T5832] ? page_fault_oops+0x8e4/0xcc0 [ 88.805753][ T5832] ? filename_create+0x282/0x480 [ 88.810692][ T5832] ? do_mkdirat+0xbd/0x3a0 [ 88.815127][ T5832] ? __pfx_page_fault_oops+0x10/0x10 [ 88.820418][ T5832] ? is_prefetch+0x4ed/0x780 [ 88.825003][ T5832] ? __pfx_is_prefetch+0x10/0x10 [ 88.830033][ T5832] ? __bad_area_nosemaphore+0x118/0x770 [ 88.835575][ T5832] ? __pfx___bad_area_nosemaphore+0x10/0x10 [ 88.841802][ T5832] ? spurious_kernel_fault+0x119/0x5a0 [ 88.847389][ T5832] ? do_kern_addr_fault+0x30/0x80 [ 88.852442][ T5832] ? exc_page_fault+0x627/0x920 [ 88.857314][ T5832] ? asm_exc_page_fault+0x26/0x30 [ 88.862347][ T5832] ? lookup_one_qstr_excl+0x162/0x370 [ 88.867722][ T5832] ? lookup_one_qstr_excl+0x2ac/0x370 [ 88.873091][ T5832] filename_create+0x282/0x480 [ 88.877848][ T5832] ? __pfx_lock_release+0x10/0x10 [ 88.882907][ T5832] ? __pfx_filename_create+0x10/0x10 [ 88.888185][ T5832] ? __might_fault+0xaa/0x120 [ 88.892858][ T5832] do_mkdirat+0xbd/0x3a0 [ 88.897092][ T5832] ? __check_object_size+0x475/0x720 [ 88.902377][ T5832] ? __pfx_do_mkdirat+0x10/0x10 [ 88.907216][ T5832] ? getname_flags+0x1e3/0x530 [ 88.911971][ T5832] __x64_sys_mkdirat+0x87/0xa0 [ 88.916725][ T5832] do_syscall_64+0xf3/0x230 [ 88.921223][ T5832] ? clear_bhb_loop+0x45/0xa0 [ 88.925891][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.931776][ T5832] RIP: 0033:0x7f6df4a19a99 [ 88.936194][ T5832] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 88.955802][ T5832] RSP: 002b:00007ffc151d83c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 88.964202][ T5832] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f6df4a19a99 [ 88.972157][ T5832] RDX: 0000000000000000 RSI: 0000400000000280 RDI: 00000000ffffff9c [ 88.980118][ T5832] RBP: 00007f6df4a8d5f0 R08: 000000000000048f R09: 000055556ec184c0 [ 88.988078][ T5832] R10: 00007ffc151d8290 R11: 0000000000000246 R12: 00007ffc151d83f0 [ 88.996044][ T5832] R13: 00007ffc151d8618 R14: 431bde82d7b634db R15: 00007f6df4a6203b [ 89.004008][ T5832] [ 89.007010][ T5832] Modules linked in: [ 89.010916][ T5832] CR2: ffffffffffffff8b [ 89.015055][ T5832] ---[ end trace 0000000000000000 ]--- [ 89.020496][ T5832] RIP: 0010:lookup_one_qstr_excl+0x162/0x370 [ 89.026469][ T5832] Code: d3 66 90 48 85 c0 0f 85 58 01 00 00 e8 07 0f 84 ff 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 57 01 00 00 bb 00 00 38 00 <41> 23 1e 44 89 fd 81 e5 00 00 02 00 89 de 09 ee 31 ff e8 17 13 84 [ 89.046062][ T5832] RSP: 0018:ffffc90003eefcb8 EFLAGS: 00010246 [ 89.052118][ T5832] RAX: 0000000000000000 RBX: 0000000000380000 RCX: ffff8880344d0000 [ 89.060074][ T5832] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 [ 89.068029][ T5832] RBP: ffff88807bbabe2c R08: ffff88807bb2298b R09: 1ffff1100f764531 [ 89.075989][ T5832] R10: dffffc0000000000 R11: ffffed100f764532 R12: ffff88807bb228d0 [ 89.083945][ T5832] R13: dffffc0000000000 R14: ffffffffffffff8b R15: 0000000000060000 [ 89.091903][ T5832] FS: 000055556ec17380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 89.100925][ T5832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.107505][ T5832] CR2: ffffffffffffff8b CR3: 000000007dba2000 CR4: 00000000003526f0 [ 89.115563][ T5832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.123641][ T5832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.131625][ T5832] Kernel panic - not syncing: Fatal exception [ 89.137915][ T5832] Kernel Offset: disabled [ 89.142240][ T5832] Rebooting in 86400 seconds..