./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1759996539 <...> Warning: Permanently added '10.128.10.61' (ED25519) to the list of known hosts. execve("./syz-executor1759996539", ["./syz-executor1759996539"], 0x7fff308f59e0 /* 10 vars */) = 0 brk(NULL) = 0x555568828000 brk(0x555568828d00) = 0x555568828d00 arch_prctl(ARCH_SET_FS, 0x555568828380) = 0 set_tid_address(0x555568828650) = 5830 set_robust_list(0x555568828660, 24) = 0 rseq(0x555568828ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1759996539", 4096) = 28 getrandom("\xe6\x27\x22\x0d\xbc\x07\x08\xdd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555568828d00 brk(0x555568849d00) = 0x555568849d00 brk(0x55556884a000) = 0x55556884a000 mprotect(0x7fb2743d2000, 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 5831 attached , child_tidptr=0x555568828650) = 5831 [pid 5831] set_robust_list(0x555568828660, 24) = 0 [pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5831] setpgid(0, 0executing program ) = 0 [pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5831] write(3, "1000", 4) = 4 [pid 5831] close(3) = 0 [pid 5831] write(1, "executing program\n", 18) = 18 [pid 5831] memfd_create("syzkaller", 0) = 3 [pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb26be00000 [pid 5831] 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"..., 1048576) = 1048576 [pid 5831] munmap(0x7fb26be00000, 138412032) = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5831] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5831] close(3) = 0 [pid 5831] close(4) = 0 [pid 5831] mkdir("./file1", 0777) = 0 [ 87.622101][ T5831] loop0: detected capacity change from 0 to 2048 [pid 5831] mount("/dev/loop0", "./file1", "ext4", MS_NODEV|MS_SILENT, "discard,bh,mb_optimize_scan=0x0000000000000001,,errors=continue") = 0 [pid 5831] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5831] chdir("./file1") = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 87.668014][ T5831] EXT4-fs: Ignoring removed bh option [ 87.694864][ T5831] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [pid 5831] setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [pid 5831] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 0101) = 4 [ 87.754628][ T5831] ------------[ cut here ]------------ [ 87.760284][ T5831] kernel BUG at fs/ext4/inline.c:235! [ 87.765943][ T5831] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 87.772905][ T5831] CPU: 0 UID: 0 PID: 5831 Comm: syz-executor175 Not tainted 6.14.0-rc3-next-20250218-syzkaller #0 [ 87.783484][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 87.793524][ T5831] RIP: 0010:ext4_write_inline_data+0x37d/0x380 [ 87.799704][ T5831] Code: 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 ff ff ff 4c 89 ff e8 36 f4 ab ff e9 15 ff ff ff e8 ec 72 44 ff 90 0f 0b e8 e4 72 44 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e [ 87.819300][ T5831] RSP: 0018:ffffc9000402f820 EFLAGS: 00010293 [ 87.825354][ T5831] RAX: ffffffff827d8bfc RBX: 000000000000003c RCX: ffff88802815da00 [ 87.833313][ T5831] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 87.841269][ T5831] RBP: 0000000000000001 R08: ffffffff827d89a8 R09: 1ffff11006a6fc70 [ 87.849228][ T5831] R10: dffffc0000000000 R11: ffffed1006a6fc71 R12: 0000010000000006 [ 87.857186][ T5831] R13: dffffc0000000000 R14: 0000010000000005 R15: ffffc9000402f900 [ 87.865142][ T5831] FS: 0000555568828380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 87.874057][ T5831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.880625][ T5831] CR2: 00007ffe684e8c48 CR3: 000000007a706000 CR4: 00000000003526f0 [ 87.888585][ T5831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.896547][ T5831] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.904504][ T5831] Call Trace: [ 87.907770][ T5831] [ 87.910688][ T5831] ? __die_body+0x5f/0xb0 [ 87.915012][ T5831] ? die+0x9e/0xc0 [ 87.918721][ T5831] ? do_trap+0x15a/0x3a0 [ 87.922953][ T5831] ? ext4_write_inline_data+0x37d/0x380 [ 87.928584][ T5831] ? do_error_trap+0x1dc/0x2c0 [ 87.933333][ T5831] ? ext4_write_inline_data+0x37d/0x380 [ 87.938868][ T5831] ? __pfx_do_error_trap+0x10/0x10 [ 87.943968][ T5831] ? report_bug+0x3ed/0x500 [ 87.948472][ T5831] ? handle_invalid_op+0x34/0x40 [ 87.953393][ T5831] ? ext4_write_inline_data+0x37d/0x380 [ 87.958930][ T5831] ? exc_invalid_op+0x38/0x50 [ 87.963596][ T5831] ? asm_exc_invalid_op+0x1a/0x20 [ 87.968608][ T5831] ? ext4_write_inline_data+0x128/0x380 [ 87.974143][ T5831] ? ext4_write_inline_data+0x37c/0x380 [ 87.979678][ T5831] ? ext4_write_inline_data+0x37d/0x380 [ 87.985213][ T5831] ext4_write_inline_data_end+0x2f7/0xa80 [ 87.990928][ T5831] ? __pfx_ext4_write_inline_data_end+0x10/0x10 [ 87.997165][ T5831] ? ext4_da_write_end+0x261/0xcd0 [ 88.002270][ T5831] ? __pfx_ext4_da_write_end+0x10/0x10 [ 88.007716][ T5831] generic_perform_write+0x6f6/0x990 [ 88.012991][ T5831] ? __pfx_generic_perform_write+0x10/0x10 [ 88.018783][ T5831] ? ext4_write_checks+0x255/0x2c0 [ 88.023880][ T5831] ext4_buffered_write_iter+0xc5/0x390 [ 88.029330][ T5831] ext4_file_write_iter+0x88f/0x1cd0 [ 88.034602][ T5831] ? __pfx_lock_acquire+0x10/0x10 [ 88.039622][ T5831] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 88.045351][ T5831] vfs_write+0xacf/0xd10 [ 88.049596][ T5831] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 88.055303][ T5831] ? __pfx_vfs_write+0x10/0x10 [ 88.060053][ T5831] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.065238][ T5831] ? lockdep_hardirqs_on+0x99/0x150 [ 88.070426][ T5831] ? ptrace_notify+0x27f/0x380 [ 88.075180][ T5831] __x64_sys_pwrite64+0x1ac/0x240 [ 88.080194][ T5831] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 88.085726][ T5831] ? lockdep_hardirqs_on+0x99/0x150 [ 88.090921][ T5831] do_syscall_64+0xf3/0x230 [ 88.095412][ T5831] ? clear_bhb_loop+0x45/0xa0 [ 88.100080][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.106049][ T5831] RIP: 0033:0x7fb27435ddd9 [ 88.110459][ T5831] 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 [ 88.130051][ T5831] RSP: 002b:00007ffcf7f74e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 88.138560][ T5831] RAX: ffffffffffffffda RBX: 0000400000000080 RCX: 00007fb27435ddd9 [ 88.146618][ T5831] RDX: 0000000000000001 RSI: 0000400000000300 RDI: 0000000000000004 [ 88.154578][ T5831] RBP: 00007fb2743d25f0 R08: 00005555688294c0 R09: 00005555688294c0 [ 88.162534][ T5831] R10: 0000010000000005 R11: 0000000000000246 R12: 00007ffcf7f74e80 [ 88.170489][ T5831] R13: 00007ffcf7f750a8 R14: 431bde82d7b634db R15: 00007fb2743a703b [ 88.178452][ T5831] [ 88.181454][ T5831] Modules linked in: [ 88.185557][ T5831] ---[ end trace 0000000000000000 ]--- [ 88.191643][ T5831] RIP: 0010:ext4_write_inline_data+0x37d/0x380 [ 88.197887][ T5831] Code: 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 ff ff ff 4c 89 ff e8 36 f4 ab ff e9 15 ff ff ff e8 ec 72 44 ff 90 0f 0b e8 e4 72 44 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e [ 88.217544][ T5831] RSP: 0018:ffffc9000402f820 EFLAGS: 00010293 [ 88.223619][ T5831] RAX: ffffffff827d8bfc RBX: 000000000000003c RCX: ffff88802815da00 [ 88.231664][ T5831] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 88.239769][ T5831] RBP: 0000000000000001 R08: ffffffff827d89a8 R09: 1ffff11006a6fc70 [ 88.247769][ T5831] R10: dffffc0000000000 R11: ffffed1006a6fc71 R12: 0000010000000006 [ 88.255780][ T5831] R13: dffffc0000000000 R14: 0000010000000005 R15: ffffc9000402f900 [ 88.263761][ T5831] FS: 0000555568828380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 88.272713][ T5831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.279330][ T5831] CR2: 00007ffe684e8c48 CR3: 000000007a706000 CR4: 00000000003526f0 [ 88.287417][ T5831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.295397][ T5831] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.303434][ T5831] Kernel panic - not syncing: Fatal exception [ 88.309770][ T5831] Kernel Offset: disabled [ 88.314083][ T5831] Rebooting in 86400 seconds..