./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1443648588
<...>
Warning: Permanently added '10.128.0.247' (ED25519) to the list of known hosts.
execve("./syz-executor1443648588", ["./syz-executor1443648588"], 0x7fffddf61560 /* 10 vars */) = 0
brk(NULL) = 0x555556d25000
brk(0x555556d25d00) = 0x555556d25d00
arch_prctl(ARCH_SET_FS, 0x555556d25380) = 0
set_tid_address(0x555556d25650) = 5030
set_robust_list(0x555556d25660, 24) = 0
rseq(0x555556d25ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1443648588", 4096) = 28
getrandom("\x52\x9a\x77\x9a\x38\x2f\xad\x49", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555556d25d00
brk(0x555556d46d00) = 0x555556d46d00
brk(0x555556d47000) = 0x555556d47000
mprotect(0x7f84d4dbe000, 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
mkdir("./syzkaller.2XBCzK", 0700) = 0
chmod("./syzkaller.2XBCzK", 0777) = 0
chdir("./syzkaller.2XBCzK") = 0
mkdir("./0", 0777) = 0
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=0x555556d25650) = 5031
./strace-static-x86_64: Process 5031 attached
[pid 5031] set_robust_list(0x555556d25660, 24) = 0
[pid 5031] chdir("./0") = 0
[pid 5031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5031] setpgid(0, 0) = 0
[pid 5031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5031] write(3, "1000", 4) = 4
[pid 5031] close(3) = 0
[pid 5031] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5031] memfd_create("syzkaller", 0) = 3
[pid 5031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f84cc8eb000
[pid 5031] 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
[pid 5031] munmap(0x7f84cc8eb000, 1048576) = 0
[pid 5031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5031] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5031] close(3) = 0
[pid 5031] mkdir("./file0", 0777) = 0
syzkaller login: [ 74.098191][ T5031] syz-executor144[5031]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
[ 74.133221][ T5031] loop0: detected capacity change from 0 to 2048
[pid 5031] mount("/dev/loop0", "./file0", "udf", MS_NODEV, "novrs,") = 0
[pid 5031] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5031] chdir("./file0") = 0
[pid 5031] ioctl(4, LOOP_CLR_FD) = 0
[pid 5031] close(4) = 0
[pid 5031] memfd_create("syzkaller", 0) = 4
[pid 5031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f84c45eb000
[ 74.147602][ T5031] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0
[ 74.159845][ T5031] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
[ 74.167528][ T5031] UDF-fs: Scanning with blocksize 512 failed
[ 74.178159][ T5031] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
[pid 5031] write(4, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x8f\x24\x2d\x5f\x49\x6d\x50\x0b\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5031] munmap(0x7f84c45eb000, 2097152) = 0
[pid 5031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5031] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy)
[pid 5031] ioctl(5, LOOP_CLR_FD) = 0
[pid 5031] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy)
[pid 5031] close(5) = 0
[pid 5031] close(4) = 0
[pid 5031] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4
[pid 5031] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0
[pid 5031] open("./bus", O_RDWR|O_NOCTTY|O_SYNC|O_NOATIME|0x3c) = 5
[pid 5031] write(5, "\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"..., 34136651) = 1048576
[pid 5031] exit_group(0) = ?
[pid 5031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5031, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x555556d266f0 /* 4 entries */, 32768) = 112
umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./0/binderfs") = 0
[ 74.438886][ T5030] ==================================================================
[ 74.447044][ T5030] BUG: KASAN: use-after-free in crc_itu_t+0x21c/0x2a0
[ 74.453865][ T5030] Read of size 1 at addr ffff8880737ac000 by task syz-executor144/5030
[ 74.462160][ T5030]
[ 74.464487][ T5030] CPU: 1 PID: 5030 Comm: syz-executor144 Not tainted 6.6.0-rc4-syzkaller-00029-gcbf3a2cb156a #0
[ 74.475018][ T5030] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
[ 74.485254][ T5030] Call Trace:
[ 74.488603][ T5030]
[ 74.491560][ T5030] dump_stack_lvl+0x1e7/0x2d0
[ 74.496283][ T5030] ? nf_tcp_handle_invalid+0x650/0x650
[ 74.501758][ T5030] ? panic+0x770/0x770
[ 74.505856][ T5030] ? _printk+0xd5/0x120
[ 74.510036][ T5030] print_report+0x163/0x540
[ 74.514559][ T5030] ? ktime_get_real_ts64+0x460/0x460
[ 74.519860][ T5030] ? __mutex_lock+0x2ee/0xd60
[ 74.524551][ T5030] ? time64_to_tm+0x331/0x4d0
[ 74.529420][ T5030] ? __virt_addr_valid+0x22f/0x2e0
[ 74.534543][ T5030] ? __phys_addr+0xba/0x170
[ 74.539060][ T5030] ? crc_itu_t+0x21c/0x2a0
[ 74.543494][ T5030] kasan_report+0x175/0x1b0
[ 74.548017][ T5030] ? crc_itu_t+0x21c/0x2a0
[ 74.552453][ T5030] ? pvclock_gtod_unregister_notifier+0x50/0x50
[ 74.558710][ T5030] crc_itu_t+0x21c/0x2a0
[ 74.563143][ T5030] udf_sync_fs+0x1d2/0x380
[ 74.567570][ T5030] ? udf_put_super+0x160/0x160
[ 74.572343][ T5030] ? dentry_kill+0xbb/0x290
[ 74.576857][ T5030] ? get_nr_dirty_inodes+0x1c7/0x210
[ 74.582244][ T5030] sync_filesystem+0xec/0x220
[ 74.586938][ T5030] generic_shutdown_super+0x72/0x2c0
[ 74.592237][ T5030] kill_block_super+0x41/0x70
[ 74.596928][ T5030] deactivate_locked_super+0xa4/0x110
[ 74.602335][ T5030] cleanup_mnt+0x426/0x4c0
[ 74.606794][ T5030] ? _raw_spin_unlock_irq+0x23/0x50
[ 74.612039][ T5030] task_work_run+0x24a/0x300
[ 74.616657][ T5030] ? task_work_cancel+0x2b0/0x2b0
[ 74.621742][ T5030] ? __x64_sys_umount+0x126/0x170
[ 74.626786][ T5030] ptrace_notify+0x2cd/0x380
[ 74.631401][ T5030] ? do_notify_parent+0x1100/0x1100
[ 74.636794][ T5030] ? user_path_at_empty+0x12f/0x180
[ 74.642182][ T5030] ? __x64_sys_umount+0x126/0x170
[ 74.647309][ T5030] ? path_umount+0xf40/0xf40
[ 74.651912][ T5030] ? syscall_enter_from_user_mode+0x32/0x230
[ 74.657914][ T5030] syscall_exit_to_user_mode+0x15c/0x280
[ 74.663570][ T5030] do_syscall_64+0x4d/0xc0
[ 74.668045][ T5030] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 74.674007][ T5030] RIP: 0033:0x7f84d4d2b6c7
[ 74.678430][ T5030] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
[ 74.698049][ T5030] RSP: 002b:00007ffc1dac1858 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[ 74.706472][ T5030] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f84d4d2b6c7
[ 74.714453][ T5030] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc1dac1910
[ 74.722431][ T5030] RBP: 00007ffc1dac1910 R08: 0000000000000000 R09: 0000000000000000
[ 74.730678][ T5030] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc1dac2980
[ 74.738661][ T5030] R13: 0000555556d266c0 R14: 431bde82d7b634db R15: 00007ffc1dac29a0
[ 74.746740][ T5030]
[ 74.749768][ T5030]
[ 74.752102][ T5030] The buggy address belongs to the physical page:
[ 74.758688][ T5030] page:ffffea0001cdeb00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x737ac
[ 74.768850][ T5030] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 74.775968][ T5030] page_type: 0xffffffff()
[ 74.780307][ T5030] raw: 00fff00000000000 ffffea0001cdeb48 ffffea0001cdaa48 0000000000000000
[ 74.788899][ T5030] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
[ 74.797544][ T5030] page dumped because: kasan: bad access detected
[ 74.803959][ T5030] page_owner tracks the page as freed
[ 74.809345][ T5030] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5031, tgid 5031 (syz-executor144), ts 74119821510, free_ts 74292718413
[ 74.828367][ T5030] post_alloc_hook+0x1e6/0x210
[ 74.833245][ T5030] get_page_from_freelist+0x31db/0x3360
[ 74.838804][ T5030] __alloc_pages+0x255/0x670
[ 74.843404][ T5030] __folio_alloc+0x13/0x30
[ 74.847830][ T5030] vma_alloc_folio+0x48a/0x9a0
[ 74.852629][ T5030] handle_mm_fault+0x2376/0x62b0
[ 74.857577][ T5030] exc_page_fault+0x455/0x860
[ 74.862267][ T5030] asm_exc_page_fault+0x26/0x30
[ 74.867144][ T5030] page last free stack trace:
[ 74.871818][ T5030] free_unref_page_prepare+0x8c3/0x9f0
[ 74.877306][ T5030] free_unref_page_list+0x596/0x830
[ 74.882524][ T5030] release_pages+0x2113/0x23f0
[ 74.887297][ T5030] folio_batch_move_lru+0x5ef/0x6d0
[ 74.892505][ T5030] lru_add_drain_cpu+0x10c/0x8c0
[ 74.897449][ T5030] lru_add_drain+0x122/0x3e0
[ 74.902166][ T5030] __folio_batch_release+0x55/0x100
[ 74.907387][ T5030] shmem_undo_range+0x6ad/0x19c0
[ 74.912351][ T5030] shmem_evict_inode+0x29e/0xa80
[ 74.917300][ T5030] evict+0x2a4/0x620
[ 74.921310][ T5030] __dentry_kill+0x436/0x650
[ 74.925999][ T5030] dentry_kill+0xbb/0x290
[ 74.930425][ T5030] dput+0x21e/0x470
[ 74.934244][ T5030] do_renameat2+0xd85/0x1660
[ 74.938850][ T5030] __x64_sys_rename+0x86/0x90
[ 74.943625][ T5030] do_syscall_64+0x41/0xc0
[ 74.948052][ T5030]
[ 74.950450][ T5030] Memory state around the buggy address:
[ 74.956083][ T5030] ffff8880737abf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 74.964152][ T5030] ffff8880737abf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 74.972217][ T5030] >ffff8880737ac000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 74.980289][ T5030] ^
[ 74.984365][ T5030] ffff8880737ac080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 74.992431][ T5030] ffff8880737ac100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 75.000497][ T5030] ==================================================================
[ 75.008835][ T5030] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 75.016153][ T5030] CPU: 0 PID: 5030 Comm: syz-executor144 Not tainted 6.6.0-rc4-syzkaller-00029-gcbf3a2cb156a #0
[ 75.026600][ T5030] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
[ 75.036665][ T5030] Call Trace:
[ 75.039990][ T5030]
[ 75.042932][ T5030] dump_stack_lvl+0x1e7/0x2d0
[ 75.047626][ T5030] ? nf_tcp_handle_invalid+0x650/0x650
[ 75.053097][ T5030] ? panic+0x770/0x770
[ 75.057186][ T5030] ? vscnprintf+0x5d/0x80
[ 75.061619][ T5030] panic+0x30f/0x770
[ 75.065524][ T5030] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 75.071692][ T5030] ? check_panic_on_warn+0x21/0xa0
[ 75.076822][ T5030] ? __memcpy_flushcache+0x2b0/0x2b0
[ 75.082125][ T5030] ? _raw_spin_unlock_irqrestore+0x12c/0x140
[ 75.088125][ T5030] ? _raw_spin_unlock+0x40/0x40
[ 75.093000][ T5030] check_panic_on_warn+0x82/0xa0
[ 75.097950][ T5030] ? crc_itu_t+0x21c/0x2a0
[ 75.102382][ T5030] end_report+0x6e/0x130
[ 75.106731][ T5030] kasan_report+0x186/0x1b0
[ 75.111261][ T5030] ? crc_itu_t+0x21c/0x2a0
[ 75.115719][ T5030] ? pvclock_gtod_unregister_notifier+0x50/0x50
[ 75.122080][ T5030] crc_itu_t+0x21c/0x2a0
[ 75.126887][ T5030] udf_sync_fs+0x1d2/0x380
[ 75.131328][ T5030] ? udf_put_super+0x160/0x160
[ 75.136209][ T5030] ? dentry_kill+0xbb/0x290
[ 75.140739][ T5030] ? get_nr_dirty_inodes+0x1c7/0x210
[ 75.146072][ T5030] sync_filesystem+0xec/0x220
[ 75.150784][ T5030] generic_shutdown_super+0x72/0x2c0
[ 75.156121][ T5030] kill_block_super+0x41/0x70
[ 75.160823][ T5030] deactivate_locked_super+0xa4/0x110
[ 75.166218][ T5030] cleanup_mnt+0x426/0x4c0
[ 75.170652][ T5030] ? _raw_spin_unlock_irq+0x23/0x50
[ 75.175880][ T5030] task_work_run+0x24a/0x300
[ 75.180489][ T5030] ? task_work_cancel+0x2b0/0x2b0
[ 75.185547][ T5030] ? __x64_sys_umount+0x126/0x170
[ 75.190598][ T5030] ptrace_notify+0x2cd/0x380
[ 75.195220][ T5030] ? do_notify_parent+0x1100/0x1100
[ 75.200452][ T5030] ? user_path_at_empty+0x12f/0x180
[ 75.205669][ T5030] ? __x64_sys_umount+0x126/0x170
[ 75.210708][ T5030] ? path_umount+0xf40/0xf40
[ 75.215347][ T5030] ? syscall_enter_from_user_mode+0x32/0x230
[ 75.221546][ T5030] syscall_exit_to_user_mode+0x15c/0x280
[ 75.227214][ T5030] do_syscall_64+0x4d/0xc0
[ 75.231656][ T5030] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 75.237940][ T5030] RIP: 0033:0x7f84d4d2b6c7
[ 75.242478][ T5030] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
[ 75.262212][ T5030] RSP: 002b:00007ffc1dac1858 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[ 75.270737][ T5030] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f84d4d2b6c7
[ 75.278754][ T5030] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc1dac1910
[ 75.286739][ T5030] RBP: 00007ffc1dac1910 R08: 0000000000000000 R09: 0000000000000000
[ 75.294896][ T5030] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc1dac2980
[ 75.302880][ T5030] R13: 0000555556d266c0 R14: 431bde82d7b634db R15: 00007ffc1dac29a0
[ 75.311057][ T5030]
[ 75.314478][ T5030] Kernel Offset: disabled
[ 75.318917][ T5030] Rebooting in 86400 seconds..