./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1546462685 <...> Warning: Permanently added '10.128.10.38' (ED25519) to the list of known hosts. execve("./syz-executor1546462685", ["./syz-executor1546462685"], 0x7ffe6704d530 /* 10 vars */) = 0 brk(NULL) = 0x55556e647000 brk(0x55556e647d00) = 0x55556e647d00 arch_prctl(ARCH_SET_FS, 0x55556e647380) = 0 set_tid_address(0x55556e647650) = 5827 set_robust_list(0x55556e647660, 24) = 0 rseq(0x55556e647ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1546462685", 4096) = 28 getrandom("\x77\x84\xef\xd0\xe5\xd2\x76\xf4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556e647d00 brk(0x55556e668d00) = 0x55556e668d00 brk(0x55556e669000) = 0x55556e669000 mprotect(0x7f606e231000, 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 5829 attached , child_tidptr=0x55556e647650) = 5829 [pid 5829] set_robust_list(0x55556e647660, 24) = 0 [pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5829] setpgid(0, 0) = 0 [pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5829] write(3, "1000", 4) = 4 [pid 5829] close(3) = 0 [pid 5829] write(1, "executing program\n", 18executing program ) = 18 [pid 5829] memfd_create("syzkaller", 0) = 3 [pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6065c00000 [pid 5829] write(3, "\x00\x00\x00\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 5829] munmap(0x7f6065c00000, 138412032) = 0 [pid 5829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5829] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5829] close(3) = 0 [pid 5829] close(4) = 0 [pid 5829] mkdir("./file0", 0777) = 0 [ 83.873553][ T5829] loop0: detected capacity change from 0 to 32768 [ 83.910557][ T5829] ocfs2: Slot 0 on device (7,0) was already allocated to this node! [ 83.919206][ T5829] ------------[ cut here ]------------ [ 83.924758][ T5829] kernel BUG at fs/ocfs2/buffer_head_io.c:45! [ 83.947265][ T5829] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 83.953556][ T5829] CPU: 0 UID: 0 PID: 5829 Comm: syz-executor154 Not tainted 6.16.0-rc2-syzkaller #0 PREEMPT(full) [ 83.964231][ T5829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 83.974274][ T5829] RIP: 0010:ocfs2_write_block+0x5d2/0x640 [ 83.980026][ T5829] Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85 [ 83.999634][ T5829] RSP: 0018:ffffc9000444ef60 EFLAGS: 00010293 [ 84.005697][ T5829] RAX: ffffffff839679a1 RBX: 1ffff1100e40ec94 RCX: ffff88807fd33c00 [ 84.013661][ T5829] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 [ 84.021623][ T5829] RBP: ffffc9000444f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e [ 84.029587][ T5829] R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000 [ 84.037552][ T5829] R13: dffffc0000000000 R14: ffff888072076488 R15: 0000000000000001 [ 84.045519][ T5829] FS: 000055556e647380(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000 [ 84.054445][ T5829] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.061023][ T5829] CR2: 00007fc2e9e4a688 CR3: 0000000073c30000 CR4: 00000000003526f0 [ 84.068993][ T5829] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.076957][ T5829] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.084922][ T5829] Call Trace: [ 84.088201][ T5829] [ 84.091129][ T5829] ? __pfx_ocfs2_write_block+0x10/0x10 [ 84.096600][ T5829] ? do_raw_spin_unlock+0x122/0x240 [ 84.101797][ T5829] ocfs2_update_disk_slot+0x6c6/0x9c0 [ 84.107171][ T5829] ? __pfx_ocfs2_update_disk_slot+0x10/0x10 [ 84.113060][ T5829] ? preempt_schedule_thunk+0x16/0x30 [ 84.118452][ T5829] ocfs2_find_slot+0x6bb/0xc30 [ 84.123216][ T5829] ? __pfx_ocfs2_find_slot+0x10/0x10 [ 84.128501][ T5829] ocfs2_fill_super+0x3ef4/0x63d0 [ 84.133519][ T5829] ? unwind_next_frame+0xa5/0x2390 [ 84.138632][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.143398][ T5829] ? __pfx_ocfs2_fill_super+0x10/0x10 [ 84.148764][ T5829] ? unwind_next_frame+0xa5/0x2390 [ 84.153870][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.158631][ T5829] ? __kasan_check_byte+0x12/0x40 [ 84.163651][ T5829] ? is_bpf_text_address+0x26/0x2b0 [ 84.168846][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.173607][ T5829] ? __kasan_check_byte+0x12/0x40 [ 84.178626][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.183390][ T5829] ? lock_release+0x4b/0x3e0 [ 84.187992][ T5829] ? lock_release+0x4b/0x3e0 [ 84.192598][ T5829] ? unwind_next_frame+0xa5/0x2390 [ 84.197720][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.202492][ T5829] ? __kasan_check_byte+0x12/0x40 [ 84.207519][ T5829] ? unwind_next_frame+0xa5/0x2390 [ 84.212639][ T5829] ? unwind_next_frame+0xa5/0x2390 [ 84.217749][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.222514][ T5829] ? __kasan_check_byte+0x12/0x40 [ 84.227535][ T5829] ? is_bpf_text_address+0x26/0x2b0 [ 84.232758][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.237522][ T5829] ? __kasan_check_byte+0x12/0x40 [ 84.242540][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.247304][ T5829] ? lock_release+0x4b/0x3e0 [ 84.251895][ T5829] ? lock_release+0x4b/0x3e0 [ 84.256488][ T5829] ? is_bpf_text_address+0x292/0x2b0 [ 84.261775][ T5829] ? is_bpf_text_address+0x26/0x2b0 [ 84.266976][ T5829] ? kernel_text_address+0xa5/0xe0 [ 84.272084][ T5829] ? __kernel_text_address+0xd/0x40 [ 84.277276][ T5829] ? unwind_get_return_address+0x4d/0x90 [ 84.282906][ T5829] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 84.289051][ T5829] ? arch_stack_walk+0xfc/0x150 [ 84.293899][ T5829] ? __bfs+0x154/0x2a0 [ 84.297968][ T5829] ? __pfx_hlock_conflict+0x10/0x10 [ 84.303165][ T5829] ? __bfs+0x154/0x2a0 [ 84.307230][ T5829] ? __pfx_hlock_conflict+0x10/0x10 [ 84.312428][ T5829] ? check_path+0x21/0x40 [ 84.316754][ T5829] ? check_noncircular+0xe0/0x160 [ 84.321777][ T5829] ? lockdep_unlock+0x89/0x120 [ 84.326534][ T5829] ? validate_chain+0x897/0x2140 [ 84.331479][ T5829] ? __lock_acquire+0xab9/0xd20 [ 84.336326][ T5829] ? __mutex_trylock_common+0x153/0x260 [ 84.341873][ T5829] ? string+0x279/0x2b0 [ 84.346035][ T5829] ? widen_string+0x3b/0x2a0 [ 84.350621][ T5829] ? string+0x279/0x2b0 [ 84.354774][ T5829] ? bdev_name+0x2ce/0x430 [ 84.359188][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.363954][ T5829] ? pointer+0x5f2/0x1190 [ 84.368280][ T5829] ? __pfx_pointer+0x10/0x10 [ 84.372872][ T5829] ? bdev_open+0x91d/0xd30 [ 84.377290][ T5829] ? format_decode+0x5ee/0xe30 [ 84.382064][ T5829] ? snprintf+0xda/0x120 [ 84.386305][ T5829] ? __pfx_snprintf+0x10/0x10 [ 84.390976][ T5829] ? set_blocksize+0x21e/0x500 [ 84.395737][ T5829] ? sb_set_blocksize+0x104/0x180 [ 84.400758][ T5829] ? setup_bdev_super+0x4c1/0x5b0 [ 84.405781][ T5829] get_tree_bdev_flags+0x40e/0x4d0 [ 84.410887][ T5829] ? __pfx_ocfs2_fill_super+0x10/0x10 [ 84.416254][ T5829] ? __pfx_get_tree_bdev_flags+0x10/0x10 [ 84.421881][ T5829] ? cap_capable+0x11f/0x460 [ 84.426469][ T5829] ? ocfs2_init_fs_context+0x65/0x260 [ 84.431834][ T5829] ? safesetid_security_capable+0xa9/0x1a0 [ 84.437638][ T5829] vfs_get_tree+0x92/0x2b0 [ 84.442051][ T5829] do_new_mount+0x24a/0xa40 [ 84.446555][ T5829] __se_sys_mount+0x317/0x410 [ 84.451234][ T5829] ? __pfx___se_sys_mount+0x10/0x10 [ 84.456429][ T5829] ? rcu_is_watching+0x15/0xb0 [ 84.461200][ T5829] ? __x64_sys_mount+0x20/0xc0 [ 84.465961][ T5829] do_syscall_64+0xfa/0x3b0 [ 84.470467][ T5829] ? lockdep_hardirqs_on+0x9c/0x150 [ 84.475663][ T5829] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.481720][ T5829] ? clear_bhb_loop+0x60/0xb0 [ 84.486394][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.492278][ T5829] RIP: 0033:0x7f606e1bae2a [ 84.496696][ T5829] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 84.516298][ T5829] RSP: 002b:00007fff13004f78 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 84.524707][ T5829] RAX: ffffffffffffffda RBX: 00007fff13004f90 RCX: 00007f606e1bae2a [ 84.532673][ T5829] RDX: 0000200000004440 RSI: 0000200000000240 RDI: 00007fff13004f90 [ 84.540985][ T5829] RBP: 0000200000000240 R08: 00007fff13004fd0 R09: 0000000000004452 [ 84.548949][ T5829] R10: 0000000000000000 R11: 0000000000000282 R12: 0000200000004440 [ 84.556913][ T5829] R13: 00007fff13004fd0 R14: 0000000000000003 R15: 0000000000000000 [ 84.564880][ T5829] [ 84.567888][ T5829] Modules linked in: [ 84.572139][ T5829] ---[ end trace 0000000000000000 ]--- [ 84.585317][ T5829] RIP: 0010:ocfs2_write_block+0x5d2/0x640 [ 84.591234][ T5829] Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85 [ 84.611351][ T5829] RSP: 0018:ffffc9000444ef60 EFLAGS: 00010293 [ 84.617445][ T5829] RAX: ffffffff839679a1 RBX: 1ffff1100e40ec94 RCX: ffff88807fd33c00 [ 84.625418][ T5829] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 [ 84.633412][ T5829] RBP: ffffc9000444f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e [ 84.641409][ T5829] R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000 [ 84.649393][ T5829] R13: dffffc0000000000 R14: ffff888072076488 R15: 0000000000000001 [ 84.657383][ T5829] FS: 000055556e647380(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000 [ 84.666294][ T5829] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.672895][ T5829] CR2: 000055c5524c6168 CR3: 0000000073c30000 CR4: 00000000003526f0 [ 84.680901][ T5829] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.688899][ T5829] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.696895][ T5829] Kernel panic - not syncing: Fatal exception [ 84.703198][ T5829] Kernel Offset: disabled [ 84.707507][ T5829] Rebooting in 86400 seconds..