./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor923581571 <...> Warning: Permanently added '10.128.0.182' (ED25519) to the list of known hosts. execve("./syz-executor923581571", ["./syz-executor923581571"], 0x7ffedcb93c90 /* 10 vars */) = 0 brk(NULL) = 0x55557623c000 brk(0x55557623cd00) = 0x55557623cd00 arch_prctl(ARCH_SET_FS, 0x55557623c380) = 0 set_tid_address(0x55557623c650) = 5838 set_robust_list(0x55557623c660, 24) = 0 rseq(0x55557623cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor923581571", 4096) = 27 getrandom("\x47\x7b\xb0\xcc\x8f\x6f\xba\xb5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557623cd00 brk(0x55557625dd00) = 0x55557625dd00 brk(0x55557625e000) = 0x55557625e000 mprotect(0x7f96c725d000, 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 5840 attached , child_tidptr=0x55557623c650) = 5840 [pid 5840] set_robust_list(0x55557623c660, 24) = 0 [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5840] setpgid(0, 0) = 0 [pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1000", 4) = 4 [pid 5840] close(3) = 0 executing program [pid 5840] write(1, "executing program\n", 18) = 18 [pid 5840] memfd_create("syzkaller", 0) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f96bec00000 [pid 5840] 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 5840] munmap(0x7f96bec00000, 138412032) = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5840] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5840] close(3) = 0 [pid 5840] close(4) = 0 [pid 5840] mkdir("./file1", 0777) = 0 syzkaller login: [ 73.750271][ T5840] loop0: detected capacity change from 0 to 32768 [ 73.770619][ T5840] ======================================================= [ 73.770619][ T5840] WARNING: The mand mount option has been deprecated and [ 73.770619][ T5840] and is ignored by this kernel. Remove the mand [ 73.770619][ T5840] option from the mount to silence this warning. [ 73.770619][ T5840] ======================================================= [pid 5840] mount("/dev/loop0", "./file1", "ocfs2", MS_SYNCHRONOUS|MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME|MS_LAZYTIME, "acl,heartbeat=none,nouser_xattr,coherency=full,data=writeback,localalloc=00000000000000000001,acl,no"...) = 0 [pid 5840] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5840] chdir("./file1") = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 73.825155][ T5840] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. [pid 5840] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC|O_DIRECT, 0733) = 4 [ 73.887653][ T30] audit: type=1800 audit(1753388090.263:2): pid=5840 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor923" name="file1" dev="loop0" ino=17058 res=0 errno=0 [ 73.901382][ T5840] ------------[ cut here ]------------ [ 73.913436][ T5840] kernel BUG at fs/ocfs2/aops.c:1158! [ 73.919034][ T5840] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 73.925308][ T5840] CPU: 0 UID: 0 PID: 5840 Comm: syz-executor923 Not tainted 6.16.0-rc7-syzkaller-00034-g25fae0b93d1d #0 PREEMPT(full) [ 73.937712][ T5840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 73.947766][ T5840] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 [ 73.954557][ T5840] Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 32 2b 9c 8d ba 69 04 00 00 48 c7 c1 80 1a ca 8b e8 58 45 1b 00 90 0f 0b e8 90 b6 2b fe 90 <0f> 0b e8 88 b6 2b fe 90 0f 0b e8 80 b6 2b fe 90 0f 0b e8 78 b6 2b [ 73.974153][ T5840] RSP: 0018:ffffc90003f8e820 EFLAGS: 00010293 [ 73.980216][ T5840] RAX: ffffffff83946f20 RBX: ffff888064878014 RCX: ffff888033379e00 [ 73.988185][ T5840] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 73.996146][ T5840] RBP: ffffc90003f8eb50 R08: ffff888075c18723 R09: 1ffff1100eb830e4 [ 74.004105][ T5840] R10: dffffc0000000000 R11: ffffed100eb830e5 R12: ffff88803229c000 [ 74.012071][ T5840] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888064878014 [ 74.020034][ T5840] FS: 000055557623c380(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000 [ 74.028956][ T5840] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.035529][ T5840] CR2: 0000200000001200 CR3: 0000000074e68000 CR4: 00000000003526f0 [ 74.043525][ T5840] Call Trace: [ 74.046797][ T5840] [ 74.049729][ T5840] ? __pfx_ocfs2_write_cluster_by_desc+0x10/0x10 [ 74.056050][ T5840] ? jbd2_write_access_granted+0x69/0x310 [ 74.061762][ T5840] ? __ocfs2_journal_access+0x621/0x820 [ 74.067302][ T5840] ? ocfs2_grab_folios_for_write+0xa57/0xd80 [ 74.073282][ T5840] ? __pfx_ocfs2_grab_folios_for_write+0x10/0x10 [ 74.079603][ T5840] ? rcu_is_watching+0x15/0xb0 [ 74.084466][ T5840] ? ocfs2_write_begin_nolock+0xeb9/0x4340 [ 74.090275][ T5840] ? ocfs2_metadata_cache_get_super+0x43/0x80 [ 74.096443][ T5840] ? ocfs2_inode_cache_get_super+0xd/0x40 [ 74.102170][ T5840] ocfs2_write_begin_nolock+0x31a3/0x4340 [ 74.107902][ T5840] ? __pfx_ocfs2_write_begin_nolock+0x10/0x10 [ 74.114050][ T5840] ? __bfs+0x154/0x2a0 [ 74.118129][ T5840] ? check_path+0x21/0x40 [ 74.122461][ T5840] ? check_noncircular+0xe0/0x160 [ 74.127487][ T5840] ? lockdep_unlock+0x89/0x120 [ 74.132263][ T5840] ? validate_chain+0x897/0x2140 [ 74.137196][ T5840] ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ 74.143175][ T5840] ? __lock_acquire+0xab9/0xd20 [ 74.148096][ T5840] ? ocfs2_dio_wr_get_block+0x8ee/0x1770 [ 74.153724][ T5840] ? down_write+0x162/0x1f0 [ 74.158227][ T5840] ? __pfx_down_write+0x10/0x10 [ 74.163063][ T5840] ? __kasan_kmalloc+0x93/0xb0 [ 74.167815][ T5840] ? ocfs2_dio_wr_get_block+0x476/0x1770 [ 74.173439][ T5840] ocfs2_dio_wr_get_block+0xb6f/0x1770 [ 74.178894][ T5840] ? __pfx_ocfs2_dio_wr_get_block+0x10/0x10 [ 74.184778][ T5840] ? iov_iter_advance+0x8b/0x1c0 [ 74.189705][ T5840] ? iov_iter_extract_pages+0x396/0x5e0 [ 74.195330][ T5840] ? __pfx_ocfs2_dio_wr_get_block+0x10/0x10 [ 74.201214][ T5840] __blockdev_direct_IO+0x16da/0x33d0 [ 74.206579][ T5840] ? check_path+0x21/0x40 [ 74.210933][ T5840] ? __pfx___blockdev_direct_IO+0x10/0x10 [ 74.216660][ T5840] ? __pfx_invalidate_inode_pages2_range+0x10/0x10 [ 74.223154][ T5840] ? __pfx_ocfs2_dio_wr_get_block+0x10/0x10 [ 74.229052][ T5840] ? filemap_write_and_wait_range+0x182/0x310 [ 74.235113][ T5840] ? __pfx_filemap_write_and_wait_range+0x10/0x10 [ 74.241546][ T5840] ? current_time+0x222/0x370 [ 74.246222][ T5840] ? __pfx_ocfs2_dio_wr_get_block+0x10/0x10 [ 74.252112][ T5840] ocfs2_direct_IO+0x25f/0x2d0 [ 74.256876][ T5840] generic_file_direct_write+0x1d8/0x3e0 [ 74.262512][ T5840] ? file_update_time+0x2da/0x490 [ 74.267532][ T5840] __generic_file_write_iter+0x11d/0x230 [ 74.273169][ T5840] ? ocfs2_file_write_iter+0x1551/0x1d10 [ 74.278796][ T5840] ocfs2_file_write_iter+0x157a/0x1d10 [ 74.284264][ T5840] ? __pfx_ocfs2_file_write_iter+0x10/0x10 [ 74.290067][ T5840] ? __lock_acquire+0xab9/0xd20 [ 74.294918][ T5840] ? finish_task_switch+0x18b/0x950 [ 74.300119][ T5840] ? finish_task_switch+0x266/0x950 [ 74.305316][ T5840] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.310562][ T5840] do_iter_readv_writev+0x56b/0x7f0 [ 74.315777][ T5840] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 74.321501][ T5840] ? rcu_read_lock_any_held+0xb3/0x120 [ 74.326960][ T5840] vfs_writev+0x31a/0x960 [ 74.331287][ T5840] ? __pfx_vfs_writev+0x10/0x10 [ 74.336127][ T5840] ? _raw_spin_lock_irq+0xae/0xf0 [ 74.341155][ T5840] ? _raw_spin_unlock_irq+0x2e/0x50 [ 74.346343][ T5840] do_writev+0x14d/0x2d0 [ 74.350607][ T5840] ? __pfx_do_writev+0x10/0x10 [ 74.355372][ T5840] do_syscall_64+0xfa/0x3b0 [ 74.359866][ T5840] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.365058][ T5840] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.371110][ T5840] ? clear_bhb_loop+0x60/0xb0 [ 74.375776][ T5840] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.381654][ T5840] RIP: 0033:0x7f96c71e5b99 [ 74.386156][ T5840] 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 [ 74.405777][ T5840] RSP: 002b:00007ffd0d29da58 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 74.414184][ T5840] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f96c71e5b99 [ 74.422147][ T5840] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000004 [ 74.430128][ T5840] RBP: 00007f96c725d5f0 R08: 000055557623d4c0 R09: 000055557623d4c0 [ 74.438090][ T5840] R10: 0000000000004440 R11: 0000000000000246 R12: 00007ffd0d29da80 [ 74.446047][ T5840] R13: 00007ffd0d29dca8 R14: 431bde82d7b634db R15: 00007f96c722e03b [ 74.454012][ T5840] [ 74.457116][ T5840] Modules linked in: [ 74.461226][ T5840] ---[ end trace 0000000000000000 ]--- [ 74.466921][ T5840] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 [ 74.473697][ T5840] Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 32 2b 9c 8d ba 69 04 00 00 48 c7 c1 80 1a ca 8b e8 58 45 1b 00 90 0f 0b e8 90 b6 2b fe 90 <0f> 0b e8 88 b6 2b fe 90 0f 0b e8 80 b6 2b fe 90 0f 0b e8 78 b6 2b [ 74.493607][ T5840] RSP: 0018:ffffc90003f8e820 EFLAGS: 00010293 [ 74.499773][ T5840] RAX: ffffffff83946f20 RBX: ffff888064878014 RCX: ffff888033379e00 [ 74.507805][ T5840] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 74.515797][ T5840] RBP: ffffc90003f8eb50 R08: ffff888075c18723 R09: 1ffff1100eb830e4 [ 74.523790][ T5840] R10: dffffc0000000000 R11: ffffed100eb830e5 R12: ffff88803229c000 [ 74.531803][ T5840] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888064878014 [ 74.539902][ T5840] FS: 000055557623c380(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000 [ 74.548856][ T5840] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.555461][ T5840] CR2: 00007ffd0d29e000 CR3: 0000000074e68000 CR4: 00000000003526f0 [ 74.563421][ T5840] Kernel panic - not syncing: Fatal exception [ 74.569731][ T5840] Kernel Offset: disabled [ 74.574040][ T5840] Rebooting in 86400 seconds..