./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1245282469 <...> Warning: Permanently added '10.128.0.114' (ED25519) to the list of known hosts. execve("./syz-executor1245282469", ["./syz-executor1245282469"], 0x7ffe8af8f980 /* 10 vars */) = 0 brk(NULL) = 0x555587f3c000 brk(0x555587f3cd00) = 0x555587f3cd00 arch_prctl(ARCH_SET_FS, 0x555587f3c380) = 0 set_tid_address(0x555587f3c650) = 5174 set_robust_list(0x555587f3c660, 24) = 0 rseq(0x555587f3cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1245282469", 4096) = 28 getrandom("\xe8\xa4\xef\x32\x84\xfd\xba\x65", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555587f3cd00 brk(0x555587f5dd00) = 0x555587f5dd00 brk(0x555587f5e000) = 0x555587f5e000 mprotect(0x7fc6c560b000, 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=0x555587f3c650) = 5175 ./strace-static-x86_64: Process 5175 attached [pid 5175] set_robust_list(0x555587f3c660, 24) = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 executing program [pid 5175] write(1, "executing program\n", 18) = 18 [pid 5175] memfd_create("syzkaller", 0) = 3 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6bd000000 [pid 5175] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5175] munmap(0x7fc6bd000000, 138412032) = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5175] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5175] close(3) = 0 [pid 5175] close(4) = 0 [pid 5175] mkdir("./file1", 0777) = 0 [ 186.634428][ T5175] loop0: detected capacity change from 0 to 32768 [ 186.660909][ T5175] ======================================================= [ 186.660909][ T5175] WARNING: The mand mount option has been deprecated and [ 186.660909][ T5175] and is ignored by this kernel. Remove the mand [ 186.660909][ T5175] option from the mount to silence this warning. [ 186.660909][ T5175] ======================================================= [pid 5175] mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 0 [pid 5175] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5175] chdir("./file1") = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5175] openat(AT_FDCWD, "blkio.bfq.avg_queue_size", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 186.734204][ T5175] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 186.787509][ T5175] ===================================================== [ 186.795081][ T5175] BUG: KMSAN: uninit-value in from_kuid+0x41e/0x990 [ 186.802642][ T5175] from_kuid+0x41e/0x990 [ 186.807138][ T5175] ocfs2_setattr+0x254/0x3140 [ 186.812139][ T5175] notify_change+0x1a8e/0x1b80 [ 186.817145][ T5175] do_ftruncate+0x8c1/0xbf0 [ 186.822014][ T5175] __x64_sys_ftruncate+0x133/0x280 [ 186.827408][ T5175] x64_sys_call+0x9e4/0x3ba0 [ 186.832388][ T5175] do_syscall_64+0xcd/0x1e0 [ 186.837108][ T5175] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 186.843293][ T5175] [ 186.845717][ T5175] Local variable newattrs.i created at: [ 186.851375][ T5175] do_ftruncate+0x600/0xbf0 [ 186.856309][ T5175] __x64_sys_ftruncate+0x133/0x280 [ 186.861776][ T5175] [ 186.864237][ T5175] CPU: 1 UID: 0 PID: 5175 Comm: syz-executor124 Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 [ 186.875464][ T5175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 186.885776][ T5175] ===================================================== [ 186.892974][ T5175] Disabling lock debugging due to kernel taint [ 186.899255][ T5175] Kernel panic - not syncing: kmsan.panic set ... [ 186.905768][ T5175] CPU: 1 UID: 0 PID: 5175 Comm: syz-executor124 Tainted: G B 6.11.0-syzkaller-07337-g2004cef11ea0 #0 [ 186.918163][ T5175] Tainted: [B]=BAD_PAGE [ 186.922394][ T5175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 186.932614][ T5175] Call Trace: [ 186.936015][ T5175] [ 186.939059][ T5175] dump_stack_lvl+0x216/0x2d0 [ 186.943874][ T5175] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 186.949858][ T5175] dump_stack+0x1e/0x30 [ 186.954154][ T5175] panic+0x4e2/0xcf0 [ 186.958206][ T5175] ? kmsan_get_metadata+0x41/0x1c0 [ 186.963592][ T5175] kmsan_report+0x2c7/0x2d0 [ 186.968264][ T5175] ? ocfs2_inode_cache_io_unlock+0x22/0x30 [ 186.974227][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 186.979600][ T5175] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 186.985569][ T5175] ? __msan_warning+0x95/0x120 [ 186.990465][ T5175] ? from_kuid+0x41e/0x990 [ 186.995024][ T5175] ? ocfs2_setattr+0x254/0x3140 [ 186.999990][ T5175] ? notify_change+0x1a8e/0x1b80 [ 187.005104][ T5175] ? do_ftruncate+0x8c1/0xbf0 [ 187.010019][ T5175] ? __x64_sys_ftruncate+0x133/0x280 [ 187.015469][ T5175] ? x64_sys_call+0x9e4/0x3ba0 [ 187.020399][ T5175] ? do_syscall_64+0xcd/0x1e0 [ 187.025215][ T5175] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 187.031448][ T5175] ? filter_irq_stacks+0x60/0x1a0 [ 187.036653][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.042018][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.047382][ T5175] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 187.053858][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.059206][ T5175] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 187.065685][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.071034][ T5175] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 187.077084][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.082431][ T5175] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 187.088400][ T5175] __msan_warning+0x95/0x120 [ 187.093126][ T5175] from_kuid+0x41e/0x990 [ 187.097553][ T5175] ocfs2_setattr+0x254/0x3140 [ 187.102407][ T5175] ? kmsan_get_metadata+0x13e/0x1c0 [ 187.107780][ T5175] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 187.113742][ T5175] ? __pfx_ocfs2_setattr+0x10/0x10 [ 187.118974][ T5175] ? __pfx_ocfs2_setattr+0x10/0x10 [ 187.124205][ T5175] notify_change+0x1a8e/0x1b80 [ 187.129119][ T5175] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 187.135612][ T5175] do_ftruncate+0x8c1/0xbf0 [ 187.140291][ T5175] __x64_sys_ftruncate+0x133/0x280 [ 187.145572][ T5175] x64_sys_call+0x9e4/0x3ba0 [ 187.150331][ T5175] do_syscall_64+0xcd/0x1e0 [ 187.154965][ T5175] ? clear_bhb_loop+0x25/0x80 [ 187.159824][ T5175] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 187.165895][ T5175] RIP: 0033:0x7fc6c5593b99 [ 187.170421][ T5175] 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 [ 187.190226][ T5175] RSP: 002b:00007fffda2c8cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d [ 187.198874][ T5175] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc6c5593b99 [ 187.206975][ T5175] RDX: 00007fc6c5593b99 RSI: 000000000000c17a RDI: 0000000000000004 [ 187.215066][ T5175] RBP: 00007fc6c560b5f0 R08: 0000555587f3d4c0 R09: 0000555587f3d4c0 [ 187.223154][ T5175] R10: 0000000000004424 R11: 0000000000000246 R12: 00007fffda2c8d20 [ 187.231243][ T5175] R13: 00007fffda2c8f48 R14: 431bde82d7b634db R15: 00007fc6c55dc03b [ 187.239358][ T5175] [ 187.242821][ T5175] Kernel Offset: disabled [ 187.247235][ T5175] Rebooting in 86400 seconds..