./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1192487570 <...> Warning: Permanently added '10.128.10.50' (ED25519) to the list of known hosts. execve("./syz-executor1192487570", ["./syz-executor1192487570"], 0x7ffcebc29ed0 /* 10 vars */) = 0 brk(NULL) = 0x55558f228000 brk(0x55558f228d00) = 0x55558f228d00 arch_prctl(ARCH_SET_FS, 0x55558f228380) = 0 set_tid_address(0x55558f228650) = 5077 set_robust_list(0x55558f228660, 24) = 0 rseq(0x55558f228ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1192487570", 4096) = 28 getrandom("\x88\x5c\x81\xfc\x51\x7e\x60\xa0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558f228d00 brk(0x55558f249d00) = 0x55558f249d00 brk(0x55558f24a000) = 0x55558f24a000 mprotect(0x7fb713293000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb70ac00000 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"..., 262144) = 262144 munmap(0x7fb70ac00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./bus", 0777) = 0 [ 76.476021][ T5077] loop0: detected capacity change from 0 to 512 [ 76.513416][ T5077] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 76.521475][ T5077] UDF-fs: Scanning with blocksize 512 failed [ 76.528794][ T5077] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 76.536325][ T5077] UDF-fs: Scanning with blocksize 1024 failed [ 76.544574][ T5077] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 76.552281][ T5077] UDF-fs: Scanning with blocksize 2048 failed [ 76.559285][ T5077] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 mount("/dev/loop0", "./bus", "udf", MS_STRICTATIME, "") = 0 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 76.572521][ T5077] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_APPEND|O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC, 000) = 4 ftruncate(4, 382977) = 0 write(4, "\x7f\x45\x4c\x46\x3f\x08\x01\xab\x07\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00\xff\x03\x00\x00\x68\x03\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00\x2e\x01\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x01\x00\x38\x00\x02\x00\x00\x02\x04\x00\x80\x00\x06\x00\x00\x00\x04\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x09\x00\x00\x00\x00\x00\x00\x00\x1f\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00"..., 1968) = -1 EIO (Input/output error) [ 76.647201][ T5077] ------------[ cut here ]------------ [ 76.653132][ T5077] kernel BUG at fs/buffer.c:2768! [ 76.658205][ T5077] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 76.665151][ T5077] CPU: 0 PID: 5077 Comm: syz-executor119 Not tainted 6.9.0-syzkaller-01768-ga5131c3fdf26 #0 [ 76.675228][ T5077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 76.685304][ T5077] RIP: 0010:submit_bh_wbc+0x546/0x560 [ 76.690718][ T5077] Code: 74 7b ff be 00 10 00 00 48 c7 c7 00 c3 47 8e 4c 89 fa e8 dd 87 c5 02 e9 95 fe ff ff e8 e3 73 7b ff 90 0f 0b e8 db 73 7b ff 90 <0f> 0b e8 d3 73 7b ff 90 0f 0b e8 cb 73 7b ff 90 0f 0b e8 c3 73 7b [ 76.710359][ T5077] RSP: 0018:ffffc90003e37878 EFLAGS: 00010293 [ 76.716431][ T5077] RAX: ffffffff821acf05 RBX: 0000000000000000 RCX: ffff88807fd35a00 [ 76.724401][ T5077] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 76.732390][ T5077] RBP: 0000000000000000 R08: ffffffff821aca63 R09: 1ffff1100fe3783a [ 76.740901][ T5077] R10: dffffc0000000000 R11: ffffed100fe3783b R12: 0000000000000000 [ 76.749179][ T5077] R13: ffff88807f1bc1d0 R14: 0000000000000000 R15: 1ffff1100fe3783a [ 76.757265][ T5077] FS: 000055558f228380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 76.766558][ T5077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.773356][ T5077] CR2: 000055717debdb78 CR3: 000000004fdce000 CR4: 00000000003506f0 [ 76.781343][ T5077] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.789642][ T5077] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.797902][ T5077] Call Trace: [ 76.801184][ T5077] [ 76.804116][ T5077] ? __die_body+0x88/0xe0 [ 76.808445][ T5077] ? die+0xcf/0x110 [ 76.812352][ T5077] ? do_trap+0x15a/0x3a0 [ 76.816601][ T5077] ? submit_bh_wbc+0x546/0x560 [ 76.821386][ T5077] ? do_error_trap+0x1dc/0x2c0 [ 76.826168][ T5077] ? submit_bh_wbc+0x546/0x560 [ 76.830953][ T5077] ? __pfx_do_error_trap+0x10/0x10 [ 76.836457][ T5077] ? handle_invalid_op+0x34/0x40 [ 76.841844][ T5077] ? submit_bh_wbc+0x546/0x560 [ 76.847060][ T5077] ? exc_invalid_op+0x38/0x50 [ 76.851746][ T5077] ? asm_exc_invalid_op+0x1a/0x20 [ 76.856805][ T5077] ? submit_bh_wbc+0xa3/0x560 [ 76.861493][ T5077] ? submit_bh_wbc+0x545/0x560 [ 76.866270][ T5077] ? submit_bh_wbc+0x546/0x560 [ 76.871144][ T5077] ? submit_bh_wbc+0x545/0x560 [ 76.875929][ T5077] __block_write_begin_int+0x12d0/0x1a70 [ 76.881685][ T5077] ? folio_wait_stable+0x70/0x90 [ 76.886828][ T5077] ? __pfx_udf_get_block+0x10/0x10 [ 76.891960][ T5077] ? __pfx___block_write_begin_int+0x10/0x10 [ 76.898095][ T5077] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 76.904809][ T5077] ? __pfx_udf_get_block+0x10/0x10 [ 76.909956][ T5077] block_write_begin+0x9b/0x1e0 [ 76.914828][ T5077] udf_write_begin+0x10d/0x1a0 [ 76.919628][ T5077] generic_perform_write+0x322/0x640 [ 76.924929][ T5077] ? __pfx_generic_perform_write+0x10/0x10 [ 76.930739][ T5077] ? file_update_time+0x2a3/0x3e0 [ 76.935774][ T5077] ? __generic_file_write_iter+0x105/0x230 [ 76.941580][ T5077] ? udf_file_write_iter+0x1c0/0x660 [ 76.946865][ T5077] udf_file_write_iter+0x2fd/0x660 [ 76.951976][ T5077] vfs_write+0xa2d/0xc50 [ 76.956239][ T5077] ? __pfx_udf_file_write_iter+0x10/0x10 [ 76.961955][ T5077] ? __pfx_vfs_write+0x10/0x10 [ 76.966725][ T5077] ? lockdep_hardirqs_on+0x99/0x150 [ 76.971920][ T5077] ? __fdget_pos+0x272/0x320 [ 76.976512][ T5077] ksys_write+0x1a0/0x2c0 [ 76.980855][ T5077] ? __pfx_ksys_write+0x10/0x10 [ 76.985709][ T5077] ? do_syscall_64+0x102/0x240 [ 76.990863][ T5077] do_syscall_64+0xf5/0x240 [ 76.996470][ T5077] ? clear_bhb_loop+0x35/0x90 [ 77.001157][ T5077] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.007065][ T5077] RIP: 0033:0x7fb713220839 [ 77.011640][ T5077] 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 [ 77.031701][ T5077] RSP: 002b:00007ffc803fb7a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.040230][ T5077] RAX: ffffffffffffffda RBX: 00007ffc803fb978 RCX: 00007fb713220839 [ 77.048199][ T5077] RDX: 0000000000000001 RSI: 0000000020000700 RDI: 0000000000000004 [ 77.056167][ T5077] RBP: 00007fb713293610 R08: 00007ffc803fb978 R09: 00007ffc803fb978 [ 77.064145][ T5077] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000001 [ 77.072122][ T5077] R13: 00007ffc803fb968 R14: 0000000000000001 R15: 0000000000000001 [ 77.080193][ T5077] [ 77.083213][ T5077] Modules linked in: [ 77.087245][ T5077] ---[ end trace 0000000000000000 ]--- [ 77.092853][ T5077] RIP: 0010:submit_bh_wbc+0x546/0x560 [ 77.098272][ T5077] Code: 74 7b ff be 00 10 00 00 48 c7 c7 00 c3 47 8e 4c 89 fa e8 dd 87 c5 02 e9 95 fe ff ff e8 e3 73 7b ff 90 0f 0b e8 db 73 7b ff 90 <0f> 0b e8 d3 73 7b ff 90 0f 0b e8 cb 73 7b ff 90 0f 0b e8 c3 73 7b [ 77.117935][ T5077] RSP: 0018:ffffc90003e37878 EFLAGS: 00010293 [ 77.124054][ T5077] RAX: ffffffff821acf05 RBX: 0000000000000000 RCX: ffff88807fd35a00 [ 77.132073][ T5077] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 77.140085][ T5077] RBP: 0000000000000000 R08: ffffffff821aca63 R09: 1ffff1100fe3783a [ 77.148144][ T5077] R10: dffffc0000000000 R11: ffffed100fe3783b R12: 0000000000000000 [ 77.156182][ T5077] R13: ffff88807f1bc1d0 R14: 0000000000000000 R15: 1ffff1100fe3783a [ 77.164202][ T5077] FS: 000055558f228380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 77.173360][ T5077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.180050][ T5077] CR2: 000055717debdb78 CR3: 000000004fdce000 CR4: 00000000003506f0 [ 77.188058][ T5077] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.196125][ T5077] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.204319][ T5077] Kernel panic - not syncing: Fatal exception [ 77.210598][ T5077] Kernel Offset: disabled [ 77.214921][ T5077] Rebooting in 86400 seconds..