./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor957418992 <...> Warning: Permanently added '10.128.1.212' (ED25519) to the list of known hosts. execve("./syz-executor957418992", ["./syz-executor957418992"], 0x7ffc2878ee90 /* 10 vars */) = 0 brk(NULL) = 0x55555c906000 brk(0x55555c906d00) = 0x55555c906d00 arch_prctl(ARCH_SET_FS, 0x55555c906380) = 0 set_tid_address(0x55555c906650) = 5175 set_robust_list(0x55555c906660, 24) = 0 rseq(0x55555c906ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor957418992", 4096) = 27 getrandom("\x3c\x58\xf4\xff\x13\xef\x54\x7a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555c906d00 brk(0x55555c927d00) = 0x55555c927d00 brk(0x55555c928000) = 0x55555c928000 mprotect(0x7ff96a3af000, 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=0x55555c906650) = 5176 ./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x55555c906660, 24) = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3executing program ) = 0 [pid 5176] write(1, "executing program\n", 18) = 18 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff961e00000 [pid 5176] 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 5176] munmap(0x7ff961e00000, 138412032) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] close(4) = 0 [pid 5176] mkdir("./file1", 0777) = 0 [ 190.224191][ T5176] loop0: detected capacity change from 0 to 32768 [ 190.255257][ T5176] ======================================================= [ 190.255257][ T5176] WARNING: The mand mount option has been deprecated and [ 190.255257][ T5176] and is ignored by this kernel. Remove the mand [ 190.255257][ T5176] option from the mount to silence this warning. [ 190.255257][ T5176] ======================================================= [pid 5176] 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 5176] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] chdir("./file1") = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5176] openat(AT_FDCWD, "blkio.bfq.avg_queue_size", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 190.354308][ T5176] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 190.389506][ T5176] ===================================================== [ 190.397535][ T5176] BUG: KMSAN: uninit-value in from_kuid+0x41e/0x990 [ 190.405538][ T5176] from_kuid+0x41e/0x990 [ 190.410054][ T5176] ocfs2_setattr+0x254/0x3140 [ 190.415082][ T5176] notify_change+0x1a8e/0x1b80 [ 190.420077][ T5176] do_ftruncate+0x8c1/0xbf0 [ 190.424950][ T5176] __x64_sys_ftruncate+0x133/0x280 [ 190.430287][ T5176] x64_sys_call+0x9e4/0x3ba0 [ 190.435192][ T5176] do_syscall_64+0xcd/0x1e0 [ 190.439910][ T5176] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 190.446141][ T5176] [ 190.448564][ T5176] Local variable newattrs.i created at: [ 190.454338][ T5176] do_ftruncate+0x600/0xbf0 [ 190.459082][ T5176] __x64_sys_ftruncate+0x133/0x280 [ 190.464507][ T5176] [ 190.466950][ T5176] CPU: 0 UID: 0 PID: 5176 Comm: syz-executor957 Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 [ 190.478089][ T5176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 190.488406][ T5176] ===================================================== [ 190.495658][ T5176] Disabling lock debugging due to kernel taint [ 190.502199][ T5176] Kernel panic - not syncing: kmsan.panic set ... [ 190.508779][ T5176] CPU: 0 UID: 0 PID: 5176 Comm: syz-executor957 Tainted: G B 6.11.0-syzkaller-07337-g2004cef11ea0 #0 [ 190.521188][ T5176] Tainted: [B]=BAD_PAGE [ 190.525415][ T5176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 190.535586][ T5176] Call Trace: [ 190.538991][ T5176] [ 190.542040][ T5176] dump_stack_lvl+0x216/0x2d0 [ 190.546885][ T5176] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.552854][ T5176] dump_stack+0x1e/0x30 [ 190.557143][ T5176] panic+0x4e2/0xcf0 [ 190.561184][ T5176] ? kmsan_get_metadata+0x41/0x1c0 [ 190.566534][ T5176] kmsan_report+0x2c7/0x2d0 [ 190.571183][ T5176] ? ocfs2_inode_cache_io_unlock+0x22/0x30 [ 190.577136][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.582483][ T5176] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.588440][ T5176] ? __msan_warning+0x95/0x120 [ 190.593351][ T5176] ? from_kuid+0x41e/0x990 [ 190.597910][ T5176] ? ocfs2_setattr+0x254/0x3140 [ 190.602901][ T5176] ? notify_change+0x1a8e/0x1b80 [ 190.608004][ T5176] ? do_ftruncate+0x8c1/0xbf0 [ 190.612922][ T5176] ? __x64_sys_ftruncate+0x133/0x280 [ 190.618384][ T5176] ? x64_sys_call+0x9e4/0x3ba0 [ 190.623296][ T5176] ? do_syscall_64+0xcd/0x1e0 [ 190.628100][ T5176] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 190.634330][ T5176] ? filter_irq_stacks+0x60/0x1a0 [ 190.639533][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.644889][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.650233][ T5176] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 190.656711][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.662086][ T5176] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 190.668579][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.673925][ T5176] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.679904][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.685252][ T5176] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.691213][ T5176] __msan_warning+0x95/0x120 [ 190.695937][ T5176] from_kuid+0x41e/0x990 [ 190.700357][ T5176] ocfs2_setattr+0x254/0x3140 [ 190.705216][ T5176] ? kmsan_get_metadata+0x13e/0x1c0 [ 190.710682][ T5176] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.716637][ T5176] ? __pfx_ocfs2_setattr+0x10/0x10 [ 190.721875][ T5176] ? __pfx_ocfs2_setattr+0x10/0x10 [ 190.727138][ T5176] notify_change+0x1a8e/0x1b80 [ 190.732084][ T5176] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 190.738571][ T5176] do_ftruncate+0x8c1/0xbf0 [ 190.743248][ T5176] __x64_sys_ftruncate+0x133/0x280 [ 190.748524][ T5176] x64_sys_call+0x9e4/0x3ba0 [ 190.753262][ T5176] do_syscall_64+0xcd/0x1e0 [ 190.757923][ T5176] ? clear_bhb_loop+0x25/0x80 [ 190.762827][ T5176] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 190.768899][ T5176] RIP: 0033:0x7ff96a337b99 [ 190.773419][ T5176] 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 [ 190.793206][ T5176] RSP: 002b:00007fff079176c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d [ 190.801853][ T5176] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff96a337b99 [ 190.809939][ T5176] RDX: 00007ff96a337b99 RSI: 000000000000c17a RDI: 0000000000000004 [ 190.818020][ T5176] RBP: 00007ff96a3af5f0 R08: 000055555c9074c0 R09: 000055555c9074c0 [ 190.826104][ T5176] R10: 0000000000004424 R11: 0000000000000246 R12: 00007fff079176f0 [ 190.834186][ T5176] R13: 00007fff07917918 R14: 431bde82d7b634db R15: 00007ff96a38003b [ 190.842291][ T5176] [ 190.845731][ T5176] Kernel Offset: disabled [ 190.850143][ T5176] Rebooting in 86400 seconds..