./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3899339682 <...> Warning: Permanently added '10.128.1.109' (ED25519) to the list of known hosts. execve("./syz-executor3899339682", ["./syz-executor3899339682"], 0x7ffe798727e0 /* 10 vars */) = 0 brk(NULL) = 0x55557e2f4000 brk(0x55557e2f4d00) = 0x55557e2f4d00 arch_prctl(ARCH_SET_FS, 0x55557e2f4380) = 0 set_tid_address(0x55557e2f4650) = 5841 set_robust_list(0x55557e2f4660, 24) = 0 rseq(0x55557e2f4ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3899339682", 4096) = 28 getrandom("\xeb\xc3\x29\x82\x66\xa8\x2f\x78", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557e2f4d00 brk(0x55557e315d00) = 0x55557e315d00 brk(0x55557e316000) = 0x55557e316000 mprotect(0x7f3f7ff1f000, 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./strace-static-x86_64: Process 5843 attached , child_tidptr=0x55557e2f4650) = 5843 [pid 5843] set_robust_list(0x55557e2f4660, 24) = 0 [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5843] setpgid(0, 0) = 0 [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5843] write(3, "1000", 4) = 4 [pid 5843] close(3executing program ) = 0 [pid 5843] write(1, "executing program\n", 18) = 18 [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3f77a00000 [pid 5843] 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 5843] munmap(0x7f3f77a00000, 138412032) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5843] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5843] close(3) = 0 [pid 5843] close(4) = 0 [pid 5843] mkdir("./file0", 0777) = 0 [ 94.355318][ T5843] loop0: detected capacity change from 0 to 32768 [ 94.396601][ T5843] ======================================================= [ 94.396601][ T5843] WARNING: The mand mount option has been deprecated and [ 94.396601][ T5843] and is ignored by this kernel. Remove the mand [ 94.396601][ T5843] option from the mount to silence this warning. [ 94.396601][ T5843] ======================================================= [pid 5843] 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 5843] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5843] chdir("./file0") = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 94.446205][ T5843] ocfs2: Slot 0 on device (7,0) was already allocated to this node! [ 94.462339][ T5843] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 94.491459][ T5843] ------------[ cut here ]------------ [ 94.497133][ T5843] kernel BUG at fs/ocfs2/suballoc.c:1443! [ 94.503061][ T5843] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 94.509448][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor389 Not tainted 6.15.0-next-20250603-syzkaller #0 PREEMPT(full) [ 94.521006][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 94.531087][ T5843] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 [ 94.537728][ T5843] Code: c2 fb ff ff e8 85 e6 19 fe 90 0f 0b e8 7d e6 19 fe 90 0f 0b e8 75 e6 19 fe 90 0f 0b e8 6d e6 19 fe 90 0f 0b e8 65 e6 19 fe 90 <0f> 0b e8 5d e6 19 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 [ 94.557356][ T5843] RSP: 0018:ffffc9000443ee80 EFLAGS: 00010293 [ 94.563674][ T5843] RAX: ffffffff83a6794b RBX: 0000000000000000 RCX: ffff88802f563c00 [ 94.571663][ T5843] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 94.579668][ T5843] RBP: ffffc9000443f110 R08: ffffc9000443f1a0 R09: 0000000000000000 [ 94.587691][ T5843] R10: ffffc9000443f1a0 R11: fffff52000887e39 R12: ffff8880329b3708 [ 94.595682][ T5843] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff110065366e1 [ 94.603757][ T5843] FS: 000055557e2f4380(0000) GS:ffff888125d53000(0000) knlGS:0000000000000000 [ 94.612786][ T5843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.619381][ T5843] CR2: 00007fc95878dd30 CR3: 0000000077a56000 CR4: 00000000003526f0 [ 94.627369][ T5843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.635360][ T5843] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.643352][ T5843] Call Trace: [ 94.646642][ T5843] [ 94.649580][ T5843] ? stack_trace_save+0x9c/0xe0 [ 94.654460][ T5843] ? check_path+0x21/0x40 [ 94.658798][ T5843] ? __pfx_ocfs2_claim_suballoc_bits+0x10/0x10 [ 94.664965][ T5843] ? lockdep_unlock+0x89/0x120 [ 94.669742][ T5843] ? validate_chain+0x897/0x2140 [ 94.675215][ T5843] ? __lock_acquire+0xab9/0xd20 [ 94.680080][ T5843] ocfs2_claim_new_inode+0x332/0x7a0 [ 94.685387][ T5843] ? __pfx_ocfs2_claim_new_inode+0x10/0x10 [ 94.691217][ T5843] ? _raw_spin_lock_irq+0xae/0xf0 [ 94.696276][ T5843] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 94.701851][ T5843] ocfs2_mknod_locked+0x100/0x250 [ 94.706890][ T5843] ? __pfx_ocfs2_mknod_locked+0x10/0x10 [ 94.712486][ T5843] ? dquot_alloc_inode+0x216/0xa50 [ 94.717611][ T5843] ? ocfs2_block_signals+0x94/0xe0 [ 94.722729][ T5843] ? __pfx_ocfs2_block_signals+0x10/0x10 [ 94.728371][ T5843] ? ocfs2_init_security_get+0x9f/0x1a0 [ 94.733937][ T5843] ocfs2_mknod+0x10c7/0x2050 [ 94.738566][ T5843] ? __pfx_ocfs2_mknod+0x10/0x10 [ 94.743513][ T5843] ? __pfx_ocfs2_find_entry+0x10/0x10 [ 94.748984][ T5843] ? __lock_acquire+0xab9/0xd20 [ 94.753855][ T5843] ? look_up_lock_class+0x74/0x170 [ 94.758978][ T5843] ? register_lock_class+0x51/0x320 [ 94.764199][ T5843] ? __lock_acquire+0xab9/0xd20 [ 94.769082][ T5843] ? __lock_acquire+0xab9/0xd20 [ 94.773950][ T5843] ? do_raw_spin_lock+0x121/0x290 [ 94.778990][ T5843] ? do_raw_spin_unlock+0x122/0x240 [ 94.784196][ T5843] ? rcu_is_watching+0x15/0xb0 [ 94.788975][ T5843] ? ocfs2_lookup+0x4a0/0x990 [ 94.793688][ T5843] ocfs2_create+0x1a5/0x440 [ 94.798201][ T5843] ? __pfx_ocfs2_lookup+0x10/0x10 [ 94.803331][ T5843] ? from_kgid+0x1b0/0x650 [ 94.807766][ T5843] ? __pfx_ocfs2_create+0x10/0x10 [ 94.812799][ T5843] ? HAS_UNMAPPED_ID+0x11a/0x180 [ 94.817768][ T5843] ? inode_permission+0x149/0x470 [ 94.822817][ T5843] ? __pfx_ocfs2_permission+0x10/0x10 [ 94.828238][ T5843] ? bpf_lsm_inode_create+0x9/0x20 [ 94.833368][ T5843] ? __pfx_ocfs2_create+0x10/0x10 [ 94.838405][ T5843] path_openat+0x14f1/0x3830 [ 94.843058][ T5843] ? arch_stack_walk+0xfc/0x150 [ 94.847926][ T5843] ? __pfx_path_openat+0x10/0x10 [ 94.852985][ T5843] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.859070][ T5843] do_filp_open+0x1fa/0x410 [ 94.863594][ T5843] ? __lock_acquire+0xab9/0xd20 [ 94.868463][ T5843] ? __pfx_do_filp_open+0x10/0x10 [ 94.873507][ T5843] ? _raw_spin_unlock+0x28/0x50 [ 94.878371][ T5843] ? alloc_fd+0x64c/0x6c0 [ 94.882714][ T5843] do_sys_openat2+0x121/0x1c0 [ 94.887405][ T5843] ? __pfx_do_sys_openat2+0x10/0x10 [ 94.892719][ T5843] ? rcu_is_watching+0x15/0xb0 [ 94.897490][ T5843] __x64_sys_openat+0x138/0x170 [ 94.902358][ T5843] do_syscall_64+0xfa/0x3b0 [ 94.906876][ T5843] ? lockdep_hardirqs_on+0x9c/0x150 [ 94.912088][ T5843] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.918171][ T5843] ? clear_bhb_loop+0x60/0xb0 [ 94.922857][ T5843] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.928756][ T5843] RIP: 0033:0x7f3f7fea7ad9 [ 94.933189][ T5843] 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 [ 94.952900][ T5843] RSP: 002b:00007fffbb46fbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 94.961354][ T5843] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3f7fea7ad9 [ 94.969389][ T5843] RDX: 0000000000040242 RSI: 00002000000002c0 RDI: 00000000ffffff9c [ 94.977385][ T5843] RBP: 00007f3f7ff1f5f0 R08: 0000000000004446 R09: 000055557e2f54c0 [ 94.985427][ T5843] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffbb46fc10 [ 94.993408][ T5843] R13: 00007fffbb46fe38 R14: 431bde82d7b634db R15: 00007f3f7fef003b [ 95.001434][ T5843] [ 95.004461][ T5843] Modules linked in: [ 95.008635][ T5843] ---[ end trace 0000000000000000 ]--- [ 95.014311][ T5843] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 [ 95.020955][ T5843] Code: c2 fb ff ff e8 85 e6 19 fe 90 0f 0b e8 7d e6 19 fe 90 0f 0b e8 75 e6 19 fe 90 0f 0b e8 6d e6 19 fe 90 0f 0b e8 65 e6 19 fe 90 <0f> 0b e8 5d e6 19 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 [ 95.040736][ T5843] RSP: 0018:ffffc9000443ee80 EFLAGS: 00010293 [ 95.046929][ T5843] RAX: ffffffff83a6794b RBX: 0000000000000000 RCX: ffff88802f563c00 [ 95.055056][ T5843] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 95.063115][ T5843] RBP: ffffc9000443f110 R08: ffffc9000443f1a0 R09: 0000000000000000 [ 95.071099][ T5843] R10: ffffc9000443f1a0 R11: fffff52000887e39 R12: ffff8880329b3708 [ 95.079140][ T5843] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff110065366e1 [ 95.087192][ T5843] FS: 000055557e2f4380(0000) GS:ffff888125d53000(0000) knlGS:0000000000000000 [ 95.096234][ T5843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.102908][ T5843] CR2: 00007fc95878dd30 CR3: 0000000077a56000 CR4: 00000000003526f0 [ 95.110901][ T5843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.118953][ T5843] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.126989][ T5843] Kernel panic - not syncing: Fatal exception [ 95.133386][ T5843] Kernel Offset: disabled [ 95.137722][ T5843] Rebooting in 86400 seconds..