./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2407448512 <...> Warning: Permanently added '10.128.1.73' (ED25519) to the list of known hosts. execve("./syz-executor2407448512", ["./syz-executor2407448512"], 0x7fffda7c24e0 /* 10 vars */) = 0 brk(NULL) = 0x5555916c3000 brk(0x5555916c3d00) = 0x5555916c3d00 arch_prctl(ARCH_SET_FS, 0x5555916c3380) = 0 set_tid_address(0x5555916c3650) = 5826 set_robust_list(0x5555916c3660, 24) = 0 rseq(0x5555916c3ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2407448512", 4096) = 28 getrandom("\xee\x6d\x7a\x2b\x9b\xd2\xda\x93", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555916c3d00 brk(0x5555916e4d00) = 0x5555916e4d00 brk(0x5555916e5000) = 0x5555916e5000 mprotect(0x7ff9d9e4e000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 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 5827 attached [pid 5827] set_robust_list(0x5555916c3660, 24) = 0 [pid 5826] <... clone resumed>, child_tidptr=0x5555916c3650) = 5827 [pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5827] setpgid(0, 0) = 0 [pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5827] write(3, "1000", 4) = 4 [pid 5827] close(3executing program ) = 0 [pid 5827] write(1, "executing program\n", 18) = 18 [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff9d1800000 [pid 5827] 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"..., 524288) = 524288 [pid 5827] munmap(0x7ff9d1800000, 138412032) = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5827] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5827] close(3) = 0 [pid 5827] close(4) = 0 [pid 5827] mkdir("./file1", 0777) = 0 [ 66.153773][ T5827] loop0: detected capacity change from 0 to 1024 [pid 5827] mount("/dev/loop0", "./file1", "ext4", MS_RELATIME, ",errors=continue") = 0 [pid 5827] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5827] chdir("./file1") = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5827] setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [pid 5827] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4 [ 66.201209][ T5827] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 66.256433][ T5827] ------------[ cut here ]------------ [ 66.261993][ T5827] kernel BUG at fs/ext4/inline.c:235! [ 66.267850][ T5827] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 66.274829][ T5827] CPU: 1 UID: 0 PID: 5827 Comm: syz-executor240 Not tainted 6.12.0-rc6-next-20241108-syzkaller #0 [ 66.285401][ T5827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 66.295484][ T5827] RIP: 0010:ext4_write_inline_data_end+0xea2/0x1020 [ 66.302100][ T5827] Code: 31 ff e8 11 f3 41 ff 48 89 d8 48 25 ff 0f 00 00 74 70 e8 21 ee 41 ff e9 12 f8 ff ff e8 17 ee 41 ff 90 0f 0b e8 0f ee 41 ff 90 <0f> 0b 48 8b 5c 24 18 48 89 df be 08 00 00 00 e8 8a 6a ac ff 48 c1 [ 66.321704][ T5827] RSP: 0018:ffffc90003d07860 EFLAGS: 00010293 [ 66.327781][ T5827] RAX: ffffffff825d8e01 RBX: 000000000000003c RCX: ffff88802b80da00 [ 66.335753][ T5827] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 66.343726][ T5827] RBP: ffffc90003d07988 R08: ffffffff825d835a R09: 1ffff110067f0c70 [ 66.351722][ T5827] R10: dffffc0000000000 R11: ffffed10067f0c71 R12: ffff88807a932ffa [ 66.359800][ T5827] R13: 0000010000000005 R14: 0000010000000006 R15: 0000000000000001 [ 66.367770][ T5827] FS: 00005555916c3380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 66.376702][ T5827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.383304][ T5827] CR2: 00007f6caa995ed8 CR3: 000000007fdd8000 CR4: 00000000003526f0 [ 66.391281][ T5827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.399267][ T5827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.407238][ T5827] Call Trace: [ 66.410519][ T5827] [ 66.413452][ T5827] ? __die_body+0x5f/0xb0 [ 66.417782][ T5827] ? die+0x9e/0xc0 [ 66.421500][ T5827] ? do_trap+0x15a/0x3a0 [ 66.425752][ T5827] ? ext4_write_inline_data_end+0xea2/0x1020 [ 66.431734][ T5827] ? do_error_trap+0x1dc/0x2c0 [ 66.436528][ T5827] ? ext4_write_inline_data_end+0xea2/0x1020 [ 66.442588][ T5827] ? __pfx_do_error_trap+0x10/0x10 [ 66.447734][ T5827] ? report_bug+0x3e8/0x500 [ 66.452262][ T5827] ? handle_invalid_op+0x34/0x40 [ 66.457231][ T5827] ? ext4_write_inline_data_end+0xea2/0x1020 [ 66.463250][ T5827] ? exc_invalid_op+0x38/0x50 [ 66.467949][ T5827] ? asm_exc_invalid_op+0x1a/0x20 [ 66.472994][ T5827] ? ext4_write_inline_data_end+0x3fa/0x1020 [ 66.478981][ T5827] ? ext4_write_inline_data_end+0xea1/0x1020 [ 66.484968][ T5827] ? ext4_write_inline_data_end+0xea2/0x1020 [ 66.490960][ T5827] ? __pfx_ext4_write_inline_data_end+0x10/0x10 [ 66.497213][ T5827] ? ext4_da_write_end+0x261/0xce0 [ 66.502359][ T5827] ? __pfx_ext4_da_write_end+0x10/0x10 [ 66.507841][ T5827] generic_perform_write+0x4db/0x6d0 [ 66.513140][ T5827] ? __pfx_generic_perform_write+0x10/0x10 [ 66.518945][ T5827] ? ext4_write_checks+0x255/0x2c0 [ 66.524078][ T5827] ext4_buffered_write_iter+0xc5/0x350 [ 66.529548][ T5827] ext4_file_write_iter+0x892/0x1c50 [ 66.534855][ T5827] ? __pfx_lock_acquire+0x10/0x10 [ 66.539910][ T5827] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 66.545648][ T5827] vfs_write+0xaeb/0xd30 [ 66.549913][ T5827] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 66.555646][ T5827] ? __pfx_vfs_write+0x10/0x10 [ 66.560428][ T5827] ? _raw_spin_unlock_irq+0x2e/0x50 [ 66.565738][ T5827] ? ptrace_notify+0x279/0x380 [ 66.570524][ T5827] __x64_sys_pwrite64+0x1ac/0x240 [ 66.575557][ T5827] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 66.581102][ T5827] ? exc_page_fault+0x590/0x8c0 [ 66.585959][ T5827] do_syscall_64+0xf3/0x230 [ 66.590557][ T5827] ? clear_bhb_loop+0x35/0x90 [ 66.595246][ T5827] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 66.601151][ T5827] RIP: 0033:0x7ff9d9ddaad9 [ 66.605584][ T5827] 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 [ 66.625206][ T5827] RSP: 002b:00007ffe3fb1db78 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 66.633622][ T5827] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff9d9ddaad9 [ 66.641722][ T5827] RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004 [ 66.649703][ T5827] RBP: 00007ff9d9e4e5f0 R08: 00005555916c44c0 R09: 00005555916c44c0 [ 66.657683][ T5827] R10: 0000010000000005 R11: 0000000000000246 R12: 00007ffe3fb1dba0 [ 66.665658][ T5827] R13: 00007ffe3fb1ddc8 R14: 431bde82d7b634db R15: 00007ff9d9e2303b [ 66.673642][ T5827] [ 66.676662][ T5827] Modules linked in: [ 66.680761][ T5827] ---[ end trace 0000000000000000 ]--- [ 66.686537][ T5827] RIP: 0010:ext4_write_inline_data_end+0xea2/0x1020 [ 66.693170][ T5827] Code: 31 ff e8 11 f3 41 ff 48 89 d8 48 25 ff 0f 00 00 74 70 e8 21 ee 41 ff e9 12 f8 ff ff e8 17 ee 41 ff 90 0f 0b e8 0f ee 41 ff 90 <0f> 0b 48 8b 5c 24 18 48 89 df be 08 00 00 00 e8 8a 6a ac ff 48 c1 [ 66.713079][ T5827] RSP: 0018:ffffc90003d07860 EFLAGS: 00010293 [ 66.719214][ T5827] RAX: ffffffff825d8e01 RBX: 000000000000003c RCX: ffff88802b80da00 [ 66.727235][ T5827] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 66.735273][ T5827] RBP: ffffc90003d07988 R08: ffffffff825d835a R09: 1ffff110067f0c70 [ 66.743258][ T5827] R10: dffffc0000000000 R11: ffffed10067f0c71 R12: ffff88807a932ffa [ 66.751264][ T5827] R13: 0000010000000005 R14: 0000010000000006 R15: 0000000000000001 [ 66.759272][ T5827] FS: 00005555916c3380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 66.768331][ T5827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.774963][ T5827] CR2: 00007f6caa995ed8 CR3: 000000007fdd8000 CR4: 00000000003526f0 [ 66.782953][ T5827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.790992][ T5827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.799023][ T5827] Kernel panic - not syncing: Fatal exception [ 66.805407][ T5827] Kernel Offset: disabled [ 66.809850][ T5827] Rebooting in 86400 seconds..