./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1169331481 <...> Warning: Permanently added '10.128.0.176' (ED25519) to the list of known hosts. execve("./syz-executor1169331481", ["./syz-executor1169331481"], 0x7fff301bbbd0 /* 10 vars */) = 0 brk(NULL) = 0x5555714a8000 brk(0x5555714a8d00) = 0x5555714a8d00 arch_prctl(ARCH_SET_FS, 0x5555714a8380) = 0 set_tid_address(0x5555714a8650) = 5838 set_robust_list(0x5555714a8660, 24) = 0 rseq(0x5555714a8ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1169331481", 4096) = 28 getrandom("\x55\x45\xd6\x16\x61\xbc\x92\xdd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555714a8d00 brk(0x5555714c9d00) = 0x5555714c9d00 brk(0x5555714ca000) = 0x5555714ca000 mprotect(0x7f18e1c7b000, 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 executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f18d9600000 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 munmap(0x7f18d9600000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 91.485664][ T5838] loop0: detected capacity change from 0 to 2048 mount("/dev/loop0", "./file0", "ext4", MS_DIRSYNC|MS_NOATIME|MS_POSIXACL|MS_LAZYTIME, ",errors=continue") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 [ 91.548217][ T5838] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4 [ 91.643046][ T5838] ------------[ cut here ]------------ [ 91.648630][ T5838] kernel BUG at fs/ext4/inline.c:235! [ 91.654526][ T5838] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 91.661868][ T5838] CPU: 1 UID: 0 PID: 5838 Comm: syz-executor116 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0 [ 91.673010][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 91.683107][ T5838] RIP: 0010:ext4_write_inline_data+0x36b/0x460 [ 91.689406][ T5838] Code: df 41 ff e8 f7 df 41 ff 45 8d 64 2c c4 b8 3c 00 00 00 29 e8 4c 63 f0 e9 c7 fe ff ff e8 de df 41 ff 90 0f 0b e8 d6 df 41 ff 90 <0f> 0b e8 8e b8 a2 ff e9 d6 fd ff ff 4c 89 ff e8 81 b8 a2 ff e9 71 [ 91.709044][ T5838] RSP: 0018:ffffc90003e078e0 EFLAGS: 00010293 [ 91.715139][ T5838] RAX: 0000000000000000 RBX: ffff888074c38c98 RCX: ffffffff824b9874 [ 91.723136][ T5838] RDX: ffff8880349bbc00 RSI: ffffffff824b9a7a RDI: 0000000000000006 [ 91.731136][ T5838] RBP: 0000010000000005 R08: 0000000000000006 R09: 0000010000000006 [ 91.739129][ T5838] R10: 000000000000003c R11: 0000000000000000 R12: 0000000000000001 [ 91.747126][ T5838] R13: ffffc90003e07980 R14: 0000010000000006 R15: ffff888074c39242 [ 91.755209][ T5838] FS: 00005555714a8380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 91.764164][ T5838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.770852][ T5838] CR2: 000000000066c7e0 CR3: 0000000077348000 CR4: 0000000000350ef0 [ 91.778846][ T5838] Call Trace: [ 91.782119][ T5838] [ 91.785050][ T5838] ? die+0x31/0x80 [ 91.788781][ T5838] ? do_trap+0x232/0x430 [ 91.793057][ T5838] ? ext4_write_inline_data+0x36b/0x460 [ 91.798620][ T5838] ? ext4_write_inline_data+0x36b/0x460 [ 91.804196][ T5838] ? do_error_trap+0xf4/0x230 [ 91.808994][ T5838] ? ext4_write_inline_data+0x36b/0x460 [ 91.814656][ T5838] ? handle_invalid_op+0x34/0x40 [ 91.819626][ T5838] ? ext4_write_inline_data+0x36b/0x460 [ 91.825181][ T5838] ? exc_invalid_op+0x2e/0x50 [ 91.829878][ T5838] ? asm_exc_invalid_op+0x1a/0x20 [ 91.834911][ T5838] ? ext4_write_inline_data+0x164/0x460 [ 91.840522][ T5838] ? ext4_write_inline_data+0x36a/0x460 [ 91.846339][ T5838] ? ext4_write_inline_data+0x36b/0x460 [ 91.851923][ T5838] ext4_write_inline_data_end+0x278/0xc50 [ 91.857922][ T5838] ? __pfx_ext4_write_inline_data_end+0x10/0x10 [ 91.864181][ T5838] ? __pfx_copy_page_from_iter_atomic+0x10/0x10 [ 91.870464][ T5838] ? fault_in_readable+0x1a7/0x200 [ 91.875598][ T5838] ext4_da_write_end+0x54e/0xd00 [ 91.880549][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.886198][ T5838] generic_perform_write+0x4e8/0x920 [ 91.891600][ T5838] ? __pfx_generic_perform_write+0x10/0x10 [ 91.897427][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.903090][ T5838] ? generic_update_time+0xcf/0xf0 [ 91.908227][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.913870][ T5838] ? mnt_put_write_access_file+0x45/0xf0 [ 91.919516][ T5838] ext4_buffered_write_iter+0x119/0x3c0 [ 91.925088][ T5838] ext4_file_write_iter+0x861/0x19d0 [ 91.930398][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.936148][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.941793][ T5838] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 91.947429][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.953071][ T5838] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 91.958811][ T5838] ? trace_lock_acquire+0x14a/0x1d0 [ 91.964021][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.969665][ T5838] ? __x64_sys_pwrite64+0x200/0x260 [ 91.974883][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.980527][ T5838] vfs_write+0x5b1/0x1150 [ 91.984872][ T5838] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 91.990702][ T5838] ? __pfx_vfs_write+0x10/0x10 [ 91.995483][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.001128][ T5838] ? find_held_lock+0x2d/0x110 [ 92.005913][ T5838] ? ptrace_notify+0xf1/0x130 [ 92.010599][ T5838] ? __pfx_lock_release+0x10/0x10 [ 92.015627][ T5838] __x64_sys_pwrite64+0x200/0x260 [ 92.020668][ T5838] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 92.026230][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.031873][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.037691][ T5838] ? _raw_spin_unlock_irq+0x2e/0x50 [ 92.042998][ T5838] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.048641][ T5838] ? ptrace_notify+0xf1/0x130 [ 92.053330][ T5838] do_syscall_64+0xcd/0x250 [ 92.057846][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.063762][ T5838] RIP: 0033:0x7f18e1c07679 [ 92.068177][ T5838] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 92.087792][ T5838] RSP: 002b:00007fff5a649ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 92.096217][ T5838] RAX: ffffffffffffffda RBX: 00007fff5a64a078 RCX: 00007f18e1c07679 [ 92.104214][ T5838] RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004 [ 92.112185][ T5838] RBP: 00007f18e1c7b610 R08: 0000000000000000 R09: 00007fff5a64a078 [ 92.120194][ T5838] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 92.128167][ T5838] R13: 00007fff5a64a068 R14: 0000000000000001 R15: 0000000000000001 [ 92.136189][ T5838] [ 92.139222][ T5838] Modules linked in: [ 92.143475][ T5838] ---[ end trace 0000000000000000 ]--- [ 92.149309][ T5838] RIP: 0010:ext4_write_inline_data+0x36b/0x460 [ 92.155769][ T5838] Code: df 41 ff e8 f7 df 41 ff 45 8d 64 2c c4 b8 3c 00 00 00 29 e8 4c 63 f0 e9 c7 fe ff ff e8 de df 41 ff 90 0f 0b e8 d6 df 41 ff 90 <0f> 0b e8 8e b8 a2 ff e9 d6 fd ff ff 4c 89 ff e8 81 b8 a2 ff e9 71 [ 92.175551][ T5838] RSP: 0018:ffffc90003e078e0 EFLAGS: 00010293 [ 92.181724][ T5838] RAX: 0000000000000000 RBX: ffff888074c38c98 RCX: ffffffff824b9874 [ 92.189744][ T5838] RDX: ffff8880349bbc00 RSI: ffffffff824b9a7a RDI: 0000000000000006 [ 92.197781][ T5838] RBP: 0000010000000005 R08: 0000000000000006 R09: 0000010000000006 [ 92.205822][ T5838] R10: 000000000000003c R11: 0000000000000000 R12: 0000000000000001 [ 92.213869][ T5838] R13: ffffc90003e07980 R14: 0000010000000006 R15: ffff888074c39242 [ 92.221908][ T5838] FS: 00005555714a8380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 92.230870][ T5838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.237504][ T5838] CR2: 00007f5524d17095 CR3: 0000000077348000 CR4: 0000000000350ef0 [ 92.245541][ T5838] Kernel panic - not syncing: Fatal exception [ 92.252123][ T5838] Kernel Offset: disabled [ 92.256466][ T5838] Rebooting in 86400 seconds..