./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1832987048 <...> Warning: Permanently added '10.128.10.47' (ED25519) to the list of known hosts. execve("./syz-executor1832987048", ["./syz-executor1832987048"], 0x7ffc05f88b10 /* 10 vars */) = 0 brk(NULL) = 0x55558e0f1000 brk(0x55558e0f1d00) = 0x55558e0f1d00 arch_prctl(ARCH_SET_FS, 0x55558e0f1380) = 0 set_tid_address(0x55558e0f1650) = 5825 set_robust_list(0x55558e0f1660, 24) = 0 rseq(0x55558e0f1ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1832987048", 4096) = 28 getrandom("\x66\xb7\x41\x82\xcc\x42\x42\x9d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558e0f1d00 brk(0x55558e112d00) = 0x55558e112d00 brk(0x55558e113000) = 0x55558e113000 mprotect(0x7fcd3251c000, 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 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, child_tidptr=0x55558e0f1650) = 5826 ./strace-static-x86_64: Process 5826 attached [pid 5826] set_robust_list(0x55558e0f1660, 24) = 0 [pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5826] setpgid(0, 0) = 0 [pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5826] write(3, "1000", 4) = 4 [pid 5826] close(3executing program ) = 0 [pid 5826] write(1, "executing program\n", 18) = 18 [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd2a000000 [pid 5826] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5826] munmap(0x7fcd2a000000, 138412032) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5826] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5826] close(3) = 0 [pid 5826] close(4) = 0 [pid 5826] mkdir("./file0", 0777) = 0 [ 90.391971][ T5826] loop0: detected capacity change from 0 to 32768 [ 90.424514][ T5826] ======================================================= [ 90.424514][ T5826] WARNING: The mand mount option has been deprecated and [ 90.424514][ T5826] and is ignored by this kernel. Remove the mand [ 90.424514][ T5826] option from the mount to silence this warning. [ 90.424514][ T5826] ======================================================= [ 90.474693][ T5826] ocfs2: Slot 0 on device (7,0) was already allocated to this node! [pid 5826] mount("/dev/loop0", "./file0", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 0 [pid 5826] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5826] chdir("./file0") = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 90.493406][ T5826] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 90.545599][ T5826] ------------[ cut here ]------------ [ 90.551155][ T5826] kernel BUG at fs/ocfs2/suballoc.c:1443! [ 90.557342][ T5826] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 90.563627][ T5826] CPU: 1 UID: 0 PID: 5826 Comm: syz-executor183 Not tainted 6.15.0-syzkaller-13804-g939f15e640f1 #0 PREEMPT(full) [ 90.575685][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 90.585748][ T5826] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 [ 90.592370][ T5826] Code: c2 fb ff ff e8 85 42 1c fe 90 0f 0b e8 7d 42 1c fe 90 0f 0b e8 75 42 1c fe 90 0f 0b e8 6d 42 1c fe 90 0f 0b e8 65 42 1c fe 90 <0f> 0b e8 5d 42 1c fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 [ 90.612326][ T5826] RSP: 0018:ffffc900042dee80 EFLAGS: 00010293 [ 90.618416][ T5826] RAX: ffffffff83a40b8b RBX: 0000000000000000 RCX: ffff88802ca45a00 [ 90.626390][ T5826] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 90.634386][ T5826] RBP: ffffc900042df110 R08: ffffc900042df1a0 R09: 0000000000000003 [ 90.642356][ T5826] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888142af0e08 [ 90.650326][ T5826] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1102855e1c1 [ 90.658299][ T5826] FS: 000055558e0f1380(0000) GS:ffff888125d86000(0000) knlGS:0000000000000000 [ 90.667662][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.674243][ T5826] CR2: 00007f12c1b8dd30 CR3: 0000000034df2000 CR4: 00000000003526f0 [ 90.682220][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.690295][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.698264][ T5826] Call Trace: [ 90.701540][ T5826] [ 90.704481][ T5826] ? __pfx_find_get_block_common+0x10/0x10 [ 90.710306][ T5826] ? __pfx_ocfs2_claim_suballoc_bits+0x10/0x10 [ 90.716475][ T5826] ? __lock_acquire+0xab9/0xd20 [ 90.721344][ T5826] __ocfs2_claim_clusters+0x303/0x8f0 [ 90.726723][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 90.731592][ T5826] ? jbd2_journal_dirty_metadata+0x71f/0xc30 [ 90.737597][ T5826] ? __pfx___ocfs2_claim_clusters+0x10/0x10 [ 90.743499][ T5826] ? ocfs2_sync_local_to_main+0x1d8/0xb60 [ 90.749222][ T5826] ? __pfx___ocfs2_journal_access+0x10/0x10 [ 90.755128][ T5826] ? __pfx_ocfs2_sync_local_to_main+0x10/0x10 [ 90.761197][ T5826] ? trace_kmalloc+0x1f/0xd0 [ 90.765797][ T5826] ? __kmalloc_node_track_caller_noprof+0x28e/0x4e0 [ 90.772401][ T5826] ? kmemdup_noprof+0x55/0x70 [ 90.777094][ T5826] ? ocfs2_claim_clusters+0x2b/0xb0 [ 90.782321][ T5826] ocfs2_reserve_local_alloc_bits+0x12be/0x24e0 [ 90.788585][ T5826] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 90.795197][ T5826] ? __lock_acquire+0xab9/0xd20 [ 90.800064][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 90.805274][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 90.810134][ T5826] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 90.816204][ T5826] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 90.822720][ T5826] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 90.829053][ T5826] ? ocfs2_reserve_new_metadata_blocks+0x113/0x940 [ 90.835570][ T5826] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 90.842439][ T5826] ? ocfs2_reserve_new_metadata_blocks+0x51e/0x940 [ 90.848986][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 90.854191][ T5826] ? __pfx_ocfs2_reserve_new_metadata_blocks+0x10/0x10 [ 90.861048][ T5826] ? __pfx_ocfs2_calc_xattr_init+0x10/0x10 [ 90.866879][ T5826] ? ocfs2_init_security_get+0x9f/0x1a0 [ 90.872421][ T5826] ocfs2_mknod+0xe32/0x2050 [ 90.876944][ T5826] ? __pfx_ocfs2_mknod+0x10/0x10 [ 90.881893][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 90.887100][ T5826] ? ocfs2_inode_lock_full_nested+0xabe/0x1b40 [ 90.893263][ T5826] ? __lock_acquire+0xab9/0xd20 [ 90.898126][ T5826] ? __lock_acquire+0xab9/0xd20 [ 90.902980][ T5826] ? smack_log+0xef/0x3f0 [ 90.907308][ T5826] ? __pfx_smack_log+0x10/0x10 [ 90.912111][ T5826] ? do_raw_spin_lock+0x121/0x290 [ 90.917141][ T5826] ? smk_access+0x14c/0x4e0 [ 90.921653][ T5826] ? smk_tskacc+0x2fc/0x370 [ 90.926157][ T5826] ? smack_inode_permission+0x28f/0x320 [ 90.931708][ T5826] ocfs2_mkdir+0x191/0x440 [ 90.936223][ T5826] ? __pfx_ocfs2_mkdir+0x10/0x10 [ 90.941165][ T5826] ? HAS_UNMAPPED_ID+0x11a/0x180 [ 90.946113][ T5826] ? bpf_lsm_inode_mkdir+0x9/0x20 [ 90.951162][ T5826] vfs_mkdir+0x306/0x510 [ 90.955434][ T5826] do_mkdirat+0x247/0x590 [ 90.959791][ T5826] ? __pfx_do_mkdirat+0x10/0x10 [ 90.964656][ T5826] ? getname_flags+0x1e5/0x540 [ 90.969430][ T5826] __x64_sys_mkdirat+0x87/0xa0 [ 90.974375][ T5826] do_syscall_64+0xfa/0x3b0 [ 90.978894][ T5826] ? lockdep_hardirqs_on+0x9c/0x150 [ 90.984288][ T5826] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.990361][ T5826] ? clear_bhb_loop+0x60/0xb0 [ 90.995053][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.000955][ T5826] RIP: 0033:0x7fcd324a4a99 [ 91.005378][ T5826] 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 [ 91.024984][ T5826] RSP: 002b:00007ffd36fcc358 EFLAGS: 00000206 ORIG_RAX: 0000000000000102 [ 91.033399][ T5826] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fcd324a4a99 [ 91.041374][ T5826] RDX: 0000000000000081 RSI: 0000200000000000 RDI: 00000000ffffff9c [ 91.049354][ T5826] RBP: 00007fcd3251c5f0 R08: 0000000000004446 R09: 000055558e0f24c0 [ 91.057329][ T5826] R10: 00007ffd36fcc220 R11: 0000000000000206 R12: 00007ffd36fcc380 [ 91.065300][ T5826] R13: 00007ffd36fcc5a8 R14: 431bde82d7b634db R15: 00007fcd324ed03b [ 91.073282][ T5826] [ 91.076302][ T5826] Modules linked in: [ 91.080546][ T5826] ---[ end trace 0000000000000000 ]--- [ 91.087197][ T5826] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 [ 91.093967][ T5826] Code: c2 fb ff ff e8 85 42 1c fe 90 0f 0b e8 7d 42 1c fe 90 0f 0b e8 75 42 1c fe 90 0f 0b e8 6d 42 1c fe 90 0f 0b e8 65 42 1c fe 90 <0f> 0b e8 5d 42 1c fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 [ 91.113717][ T5826] RSP: 0018:ffffc900042dee80 EFLAGS: 00010293 [ 91.119829][ T5826] RAX: ffffffff83a40b8b RBX: 0000000000000000 RCX: ffff88802ca45a00 [ 91.127976][ T5826] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 91.136023][ T5826] RBP: ffffc900042df110 R08: ffffc900042df1a0 R09: 0000000000000003 [ 91.144048][ T5826] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888142af0e08 [ 91.152059][ T5826] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1102855e1c1 [ 91.160123][ T5826] FS: 000055558e0f1380(0000) GS:ffff888125d86000(0000) knlGS:0000000000000000 [ 91.169122][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.175816][ T5826] CR2: 00007f12c1b8dd30 CR3: 0000000034df2000 CR4: 00000000003526f0 [ 91.183850][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.191911][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.199934][ T5826] Kernel panic - not syncing: Fatal exception [ 91.206263][ T5826] Kernel Offset: disabled [ 91.210592][ T5826] Rebooting in 86400 seconds..