./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2616101612
<...>
Warning: Permanently added '10.128.0.179' (ED25519) to the list of known hosts.
execve("./syz-executor2616101612", ["./syz-executor2616101612"], 0x7ffcaaaa0260 /* 10 vars */) = 0
brk(NULL) = 0x555555ba0000
brk(0x555555ba0d00) = 0x555555ba0d00
arch_prctl(ARCH_SET_FS, 0x555555ba0380) = 0
set_tid_address(0x555555ba0650) = 5033
set_robust_list(0x555555ba0660, 24) = 0
rseq(0x555555ba0ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2616101612", 4096) = 28
getrandom("\x8f\x54\x7d\xe7\x68\xde\xa8\x85", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555555ba0d00
brk(0x555555bc1d00) = 0x555555bc1d00
brk(0x555555bc2000) = 0x555555bc2000
mprotect(0x7f4b3b97a000, 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.PBvGhL", 0700) = 0
chmod("./syzkaller.PBvGhL", 0777) = 0
chdir("./syzkaller.PBvGhL") = 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=0x555555ba0650) = 5034
./strace-static-x86_64: Process 5034 attached
[pid 5034] set_robust_list(0x555555ba0660, 24) = 0
[pid 5034] chdir("./0") = 0
[pid 5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5034] setpgid(0, 0) = 0
[pid 5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5034] write(3, "1000", 4) = 4
[pid 5034] close(3) = 0
[pid 5034] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5034] memfd_create("syzkaller", 0) = 3
[pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4b334a7000
[pid 5034] 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 5034] munmap(0x7f4b334a7000, 1048576) = 0
[pid 5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 72.609195][ T5034] syz-executor261[5034]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
[pid 5034] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5034] close(3) = 0
[pid 5034] mkdir("./bus", 0777) = 0
[pid 5034] mount("/dev/loop0", "./bus", "udf", MS_NOEXEC|MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME|MS_SILENT|MS_POSIXACL|MS_LAZYTIME, "gid=forget,uid=00000000000000000000,nostrict,uid=forget,dmode=00000000000000000037050,mode=000000000"...) = 0
[pid 5034] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3
[pid 5034] chdir("./bus") = 0
[pid 5034] ioctl(4, LOOP_CLR_FD) = 0
[pid 5034] close(4) = 0
[pid 5034] creat("./bus", 000) = 4
[pid 5034] mount("/dev/loop0", "./bus", NULL, MS_MANDLOCK|MS_NODIRATIME|MS_BIND, NULL) = 0
[pid 5034] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c) = 5
[pid 5034] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0) = 0x20000000
[ 72.650850][ T5034] loop0: detected capacity change from 0 to 2048
[ 72.660756][ T5034] =======================================================
[ 72.660756][ T5034] WARNING: The mand mount option has been deprecated and
[ 72.660756][ T5034] and is ignored by this kernel. Remove the mand
[ 72.660756][ T5034] option from the mount to silence this warning.
[ 72.660756][ T5034] =======================================================
[pid 5034] memfd_create("syzkaller", 0) = 6
[pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4b2b1a7000
[pid 5034] write(6, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x10\x01\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\x01\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x78\x5f\xaa\x3b\xd7\x0e\xce\x68\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 5034] munmap(0x7f4b2b1a7000, 2097152) = 0
[pid 5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7
[pid 5034] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy)
[pid 5034] ioctl(7, LOOP_CLR_FD) = 0
[pid 5034] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy)
[pid 5034] close(7) = 0
[pid 5034] close(6) = 0
[pid 5034] exit_group(0) = ?
[pid 5034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5034, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} ---
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, 0x555555ba16f0 /* 4 entries */, 32768) = 104
[ 72.812501][ T5033] ==================================================================
[ 72.820656][ T5033] BUG: KASAN: use-after-free in crc_itu_t+0x1d5/0x2a0
[ 72.827480][ T5033] Read of size 1 at addr ffff8880743e6000 by task syz-executor261/5033
[ 72.835835][ T5033]
[ 72.838182][ T5033] CPU: 0 PID: 5033 Comm: syz-executor261 Not tainted 6.6.0-rc4-syzkaller-00012-gce36c8b14987 #0
[ 72.848610][ T5033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
[ 72.858663][ T5033] Call Trace:
[ 72.861938][ T5033]
[ 72.864901][ T5033] dump_stack_lvl+0x1e7/0x2d0
[ 72.869586][ T5033] ? nf_tcp_handle_invalid+0x650/0x650
[ 72.875042][ T5033] ? panic+0x770/0x770
[ 72.879117][ T5033] ? _printk+0xd5/0x120
[ 72.883296][ T5033] print_report+0x163/0x540
[ 72.887814][ T5033] ? ktime_get_real_ts64+0x460/0x460
[ 72.893107][ T5033] ? __mutex_lock+0x2ee/0xd60
[ 72.897796][ T5033] ? time64_to_tm+0x331/0x4d0
[ 72.902481][ T5033] ? __virt_addr_valid+0x22f/0x2e0
[ 72.907686][ T5033] ? __phys_addr+0xba/0x170
[ 72.912212][ T5033] ? crc_itu_t+0x1d5/0x2a0
[ 72.916642][ T5033] kasan_report+0x175/0x1b0
[ 72.921163][ T5033] ? crc_itu_t+0x1d5/0x2a0
[ 72.925610][ T5033] ? pvclock_gtod_unregister_notifier+0x50/0x50
[ 72.931865][ T5033] crc_itu_t+0x1d5/0x2a0
[ 72.936136][ T5033] udf_sync_fs+0x1d2/0x380
[ 72.940566][ T5033] ? udf_put_super+0x160/0x160
[ 72.945334][ T5033] ? dentry_kill+0xbb/0x290
[ 72.949841][ T5033] ? get_nr_dirty_inodes+0x1c7/0x210
[ 72.955228][ T5033] sync_filesystem+0xec/0x220
[ 72.959916][ T5033] generic_shutdown_super+0x72/0x2c0
[ 72.965213][ T5033] kill_block_super+0x41/0x70
[ 72.969899][ T5033] deactivate_locked_super+0xa4/0x110
[ 72.975280][ T5033] cleanup_mnt+0x426/0x4c0
[ 72.979708][ T5033] ? _raw_spin_unlock_irq+0x23/0x50
[ 72.984940][ T5033] task_work_run+0x24a/0x300
[ 72.989566][ T5033] ? task_work_cancel+0x2b0/0x2b0
[ 72.994599][ T5033] ? __x64_sys_umount+0x126/0x170
[ 72.999641][ T5033] ptrace_notify+0x2cd/0x380
[ 73.004249][ T5033] ? do_notify_parent+0x1100/0x1100
[ 73.009461][ T5033] ? user_path_at_empty+0x12f/0x180
[ 73.014667][ T5033] ? __x64_sys_umount+0x126/0x170
[ 73.019702][ T5033] ? path_umount+0xf40/0xf40
[ 73.024331][ T5033] ? syscall_enter_from_user_mode+0x32/0x230
[ 73.030322][ T5033] syscall_exit_to_user_mode+0x15c/0x280
[ 73.035967][ T5033] do_syscall_64+0x4d/0xc0
[ 73.040390][ T5033] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 73.046291][ T5033] RIP: 0033:0x7f4b3b8e75c7
[ 73.050711][ T5033] 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
[ 73.070323][ T5033] RSP: 002b:00007ffc5ce5e108 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[ 73.078747][ T5033] RAX: 0000000000000000 RBX: 0000000000011b76 RCX: 00007f4b3b8e75c7
[ 73.086811][ T5033] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc5ce5e1c0
[ 73.094782][ T5033] RBP: 00007ffc5ce5e1c0 R08: 0000000000000000 R09: 0000000000000000
[ 73.102756][ T5033] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc5ce5f230
[ 73.110734][ T5033] R13: 0000555555ba16c0 R14: 431bde82d7b634db R15: 00007ffc5ce5f250
[ 73.118740][ T5033]
[ 73.121781][ T5033]
[ 73.124121][ T5033] The buggy address belongs to the physical page:
[ 73.130539][ T5033] page:ffffea0001d0f980 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x743e6
[ 73.140694][ T5033] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 73.147824][ T5033] page_type: 0xffffffff()
[ 73.152154][ T5033] raw: 00fff00000000000 ffffea0001fdf9c8 ffffea0001d0f608 0000000000000000
[ 73.160737][ T5033] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
[ 73.169317][ T5033] page dumped because: kasan: bad access detected
[ 73.175724][ T5033] page_owner tracks the page as freed
[ 73.181116][ T5033] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5020, tgid 5020 (sshd), ts 65754574506, free_ts 65895280951
[ 73.199117][ T5033] post_alloc_hook+0x1e6/0x210
[ 73.203933][ T5033] get_page_from_freelist+0x31db/0x3360
[ 73.209498][ T5033] __alloc_pages+0x255/0x670
[ 73.214101][ T5033] __folio_alloc+0x13/0x30
[ 73.218523][ T5033] vma_alloc_folio+0x48a/0x9a0
[ 73.223290][ T5033] handle_mm_fault+0x2376/0x62b0
[ 73.228236][ T5033] exc_page_fault+0x455/0x860
[ 73.232924][ T5033] asm_exc_page_fault+0x26/0x30
[ 73.237782][ T5033] page last free stack trace:
[ 73.242451][ T5033] free_unref_page_prepare+0x8c3/0x9f0
[ 73.247928][ T5033] free_unref_page_list+0x596/0x830
[ 73.253141][ T5033] release_pages+0x2113/0x23f0
[ 73.258006][ T5033] tlb_flush_mmu+0x34c/0x4e0
[ 73.262603][ T5033] tlb_finish_mmu+0xd4/0x1f0
[ 73.267200][ T5033] unmap_region+0x300/0x350
[ 73.271710][ T5033] do_vmi_align_munmap+0x121e/0x1850
[ 73.277011][ T5033] do_vmi_munmap+0x24d/0x2d0
[ 73.281624][ T5033] __vm_munmap+0x230/0x450
[ 73.286052][ T5033] __x64_sys_munmap+0x69/0x80
[ 73.290741][ T5033] do_syscall_64+0x41/0xc0
[ 73.295216][ T5033] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 73.301133][ T5033]
[ 73.303460][ T5033] Memory state around the buggy address:
[ 73.309117][ T5033] ffff8880743e5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 73.317200][ T5033] ffff8880743e5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 73.325264][ T5033] >ffff8880743e6000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 73.333343][ T5033] ^
[ 73.337433][ T5033] ffff8880743e6080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 73.345494][ T5033] ffff8880743e6100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 73.353577][ T5033] ==================================================================
[ 73.362383][ T5033] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 73.369629][ T5033] CPU: 1 PID: 5033 Comm: syz-executor261 Not tainted 6.6.0-rc4-syzkaller-00012-gce36c8b14987 #0
[ 73.380076][ T5033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
[ 73.390133][ T5033] Call Trace:
[ 73.393435][ T5033]
[ 73.396370][ T5033] dump_stack_lvl+0x1e7/0x2d0
[ 73.401079][ T5033] ? nf_tcp_handle_invalid+0x650/0x650
[ 73.406560][ T5033] ? panic+0x770/0x770
[ 73.410635][ T5033] ? vscnprintf+0x5d/0x80
[ 73.414985][ T5033] panic+0x30f/0x770
[ 73.418885][ T5033] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 73.425061][ T5033] ? check_panic_on_warn+0x21/0xa0
[ 73.430188][ T5033] ? __memcpy_flushcache+0x2b0/0x2b0
[ 73.435976][ T5033] ? _raw_spin_unlock_irqrestore+0x12c/0x140
[ 73.441973][ T5033] ? _raw_spin_unlock+0x40/0x40
[ 73.446852][ T5033] check_panic_on_warn+0x82/0xa0
[ 73.451801][ T5033] ? crc_itu_t+0x1d5/0x2a0
[ 73.456230][ T5033] end_report+0x6e/0x130
[ 73.460494][ T5033] kasan_report+0x186/0x1b0
[ 73.465001][ T5033] ? crc_itu_t+0x1d5/0x2a0
[ 73.469422][ T5033] ? pvclock_gtod_unregister_notifier+0x50/0x50
[ 73.475664][ T5033] crc_itu_t+0x1d5/0x2a0
[ 73.479925][ T5033] udf_sync_fs+0x1d2/0x380
[ 73.484357][ T5033] ? udf_put_super+0x160/0x160
[ 73.489140][ T5033] ? dentry_kill+0xbb/0x290
[ 73.493661][ T5033] ? get_nr_dirty_inodes+0x1c7/0x210
[ 73.498966][ T5033] sync_filesystem+0xec/0x220
[ 73.503657][ T5033] generic_shutdown_super+0x72/0x2c0
[ 73.508952][ T5033] kill_block_super+0x41/0x70
[ 73.513636][ T5033] deactivate_locked_super+0xa4/0x110
[ 73.519021][ T5033] cleanup_mnt+0x426/0x4c0
[ 73.523442][ T5033] ? _raw_spin_unlock_irq+0x23/0x50
[ 73.528669][ T5033] task_work_run+0x24a/0x300
[ 73.533265][ T5033] ? task_work_cancel+0x2b0/0x2b0
[ 73.538315][ T5033] ? __x64_sys_umount+0x126/0x170
[ 73.543365][ T5033] ptrace_notify+0x2cd/0x380
[ 73.547972][ T5033] ? do_notify_parent+0x1100/0x1100
[ 73.553200][ T5033] ? user_path_at_empty+0x12f/0x180
[ 73.558409][ T5033] ? __x64_sys_umount+0x126/0x170
[ 73.563440][ T5033] ? path_umount+0xf40/0xf40
[ 73.568036][ T5033] ? syscall_enter_from_user_mode+0x32/0x230
[ 73.574040][ T5033] syscall_exit_to_user_mode+0x15c/0x280
[ 73.579767][ T5033] do_syscall_64+0x4d/0xc0
[ 73.584184][ T5033] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 73.590095][ T5033] RIP: 0033:0x7f4b3b8e75c7
[ 73.594529][ T5033] 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
[ 73.614157][ T5033] RSP: 002b:00007ffc5ce5e108 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[ 73.622572][ T5033] RAX: 0000000000000000 RBX: 0000000000011b76 RCX: 00007f4b3b8e75c7
[ 73.630540][ T5033] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc5ce5e1c0
[ 73.638680][ T5033] RBP: 00007ffc5ce5e1c0 R08: 0000000000000000 R09: 0000000000000000
[ 73.646647][ T5033] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc5ce5f230
[ 73.654613][ T5033] R13: 0000555555ba16c0 R14: 431bde82d7b634db R15: 00007ffc5ce5f250
[ 73.662595][ T5033]
[ 73.665969][ T5033] Kernel Offset: disabled
[ 73.670297][ T5033] Rebooting in 86400 seconds..