./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1966092875 <...> Warning: Permanently added '10.128.0.17' (ED25519) to the list of known hosts. execve("./syz-executor1966092875", ["./syz-executor1966092875"], 0x7ffc987395a0 /* 10 vars */) = 0 brk(NULL) = 0x555555cbd000 brk(0x555555cbdd00) = 0x555555cbdd00 arch_prctl(ARCH_SET_FS, 0x555555cbd380) = 0 set_tid_address(0x555555cbd650) = 5008 set_robust_list(0x555555cbd660, 24) = 0 rseq(0x555555cbdca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1966092875", 4096) = 28 getrandom("\xc9\xbe\xb0\xad\xaf\x8e\x2f\xb1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555cbdd00 brk(0x555555cded00) = 0x555555cded00 brk(0x555555cdf000) = 0x555555cdf000 mprotect(0x7f8d61c10000, 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, child_tidptr=0x555555cbd650) = 5009 ./strace-static-x86_64: Process 5009 attached [pid 5009] set_robust_list(0x555555cbd660, 24) = 0 [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setpgid(0, 0) = 0 [pid 5009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1000", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] memfd_create("syzkaller", 0) = 3 [pid 5009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8d5975c000 [pid 5009] 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"..., 4194304) = 4194304 [pid 5009] munmap(0x7f8d5975c000, 138412032) = 0 [pid 5009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5009] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5009] close(3) = 0 [pid 5009] mkdir("./file0", 0777) = 0 [ 140.281034][ T5009] loop0: detected capacity change from 0 to 8192 [ 140.304759][ T5009] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 140.318182][ T5009] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [pid 5009] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0 [pid 5009] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5009] chdir("./file0") = 0 [pid 5009] ioctl(4, LOOP_CLR_FD) = 0 [pid 5009] close(4) = 0 [pid 5009] mkdir(".", 0777) = -1 EEXIST (File exists) [ 140.328160][ T5009] REISERFS (device loop0): using ordered data mode [ 140.335055][ T5009] reiserfs: using flush barriers [ 140.343326][ T5009] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 140.360646][ T5009] REISERFS (device loop0): checking transaction log (loop0) [ 140.371116][ T5009] REISERFS (device loop0): Using r5 hash to sort names [pid 5009] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0 [pid 5009] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4 [pid 5009] chdir(".") = 0 [pid 5009] openat(AT_FDCWD, "./file0", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|FASYNC, 000) = 5 [ 140.401266][ T5009] reiserfs: enabling write barrier flush mode [ 140.419580][ T5009] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 140.494292][ T5009] ===================================================== [ 140.501522][ T5009] BUG: KMSAN: uninit-value in search_by_key+0x3293/0x6780 [ 140.508782][ T5009] search_by_key+0x3293/0x6780 [ 140.513978][ T5009] reiserfs_delete_solid_item+0x4ec/0xe90 [ 140.519926][ T5009] remove_save_link+0x2ed/0x420 [ 140.525123][ T5009] reiserfs_truncate_file+0xd00/0x1b70 [ 140.530811][ T5009] reiserfs_setattr+0x1b79/0x1ee0 [ 140.535986][ T5009] notify_change+0x19fd/0x1af0 [ 140.540990][ T5009] do_truncate+0x22a/0x2a0 [ 140.545582][ T5009] do_sys_ftruncate+0x81c/0xb30 [ 140.550837][ T5009] __x64_sys_ftruncate+0x71/0xa0 [ 140.555958][ T5009] do_syscall_64+0x44/0x110 [ 140.560841][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 140.566922][ T5009] [ 140.569329][ T5009] Local variable cpu_key created at: [ 140.574852][ T5009] reiserfs_delete_solid_item+0xbf/0xe90 [ 140.580825][ T5009] remove_save_link+0x2ed/0x420 [ 140.585860][ T5009] [ 140.588269][ T5009] CPU: 0 PID: 5009 Comm: syz-executor196 Not tainted 6.7.0-rc8-syzkaller #0 [ 140.597347][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 140.607653][ T5009] ===================================================== [ 140.614910][ T5009] Disabling lock debugging due to kernel taint [ 140.621229][ T5009] Kernel panic - not syncing: kmsan.panic set ... [ 140.627753][ T5009] CPU: 0 PID: 5009 Comm: syz-executor196 Tainted: G B 6.7.0-rc8-syzkaller #0 [ 140.638038][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 140.648244][ T5009] Call Trace: [ 140.651608][ T5009] [ 140.654619][ T5009] dump_stack_lvl+0x1bf/0x240 [ 140.659464][ T5009] dump_stack+0x1e/0x20 [ 140.663800][ T5009] panic+0x4de/0xc90 [ 140.667923][ T5009] ? add_taint+0x108/0x1a0 [ 140.672531][ T5009] kmsan_report+0x2d0/0x2d0 [ 140.677341][ T5009] ? __msan_warning+0x96/0x110 [ 140.682317][ T5009] ? search_by_key+0x3293/0x6780 [ 140.687469][ T5009] ? reiserfs_delete_solid_item+0x4ec/0xe90 [ 140.693529][ T5009] ? remove_save_link+0x2ed/0x420 [ 140.698695][ T5009] ? reiserfs_truncate_file+0xd00/0x1b70 [ 140.704514][ T5009] ? reiserfs_setattr+0x1b79/0x1ee0 [ 140.709844][ T5009] ? notify_change+0x19fd/0x1af0 [ 140.715000][ T5009] ? do_truncate+0x22a/0x2a0 [ 140.719763][ T5009] ? do_sys_ftruncate+0x81c/0xb30 [ 140.724917][ T5009] ? __x64_sys_ftruncate+0x71/0xa0 [ 140.730180][ T5009] ? do_syscall_64+0x44/0x110 [ 140.735073][ T5009] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 140.741359][ T5009] ? __find_get_block+0x3bc/0x1d10 [ 140.746626][ T5009] ? __find_get_block+0x4b/0x1d10 [ 140.751787][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.758244][ T5009] ? bdev_getblk+0xf0/0x1790 [ 140.762987][ T5009] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 140.769074][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 140.775044][ T5009] __msan_warning+0x96/0x110 [ 140.779761][ T5009] search_by_key+0x3293/0x6780 [ 140.784695][ T5009] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 140.790628][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.797004][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 140.802972][ T5009] reiserfs_delete_solid_item+0x4ec/0xe90 [ 140.808940][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.815395][ T5009] ? do_journal_begin_r+0x9f/0x1930 [ 140.820800][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 140.826910][ T5009] ? do_journal_begin_r+0x9f/0x1930 [ 140.832313][ T5009] ? filter_irq_stacks+0x60/0x1a0 [ 140.837467][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.843925][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.850384][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 140.856378][ T5009] ? do_journal_begin_r+0x1803/0x1930 [ 140.861915][ T5009] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 140.868389][ T5009] remove_save_link+0x2ed/0x420 [ 140.873387][ T5009] reiserfs_truncate_file+0xd00/0x1b70 [ 140.879012][ T5009] reiserfs_setattr+0x1b79/0x1ee0 [ 140.884198][ T5009] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 140.890163][ T5009] ? reiserfs_commit_write+0xb60/0xb60 [ 140.895765][ T5009] notify_change+0x19fd/0x1af0 [ 140.900759][ T5009] do_truncate+0x22a/0x2a0 [ 140.905357][ T5009] do_sys_ftruncate+0x81c/0xb30 [ 140.910354][ T5009] __x64_sys_ftruncate+0x71/0xa0 [ 140.915428][ T5009] do_syscall_64+0x44/0x110 [ 140.920136][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 140.926227][ T5009] RIP: 0033:0x7f8d61b9af59 [ 140.930762][ T5009] 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 [ 140.950658][ T5009] RSP: 002b:00007ffeac795e88 EFLAGS: 00000246 ORIG_RAX: 000000000000004d [ 140.959252][ T5009] RAX: ffffffffffffffda RBX: 00007f8d61be4082 RCX: 00007f8d61b9af59 [ 140.967375][ T5009] RDX: 0000000000000014 RSI: 0000000006000000 RDI: 0000000000000005 [ 140.975464][ T5009] RBP: 00007f8d61be4092 R08: 0000000020000480 R09: 0000555555cbe4c0 [ 140.983543][ T5009] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeac795eb0 [ 140.991658][ T5009] R13: 00007ffeac7960d8 R14: 431bde82d7b634db R15: 00007f8d61be401d [ 140.999786][ T5009] [ 141.003238][ T5009] Kernel Offset: disabled [ 141.007621][ T5009] Rebooting in 86400 seconds..