./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3243557626 <...> forked to background, child pid 5491 no interfaces have a carrier [ 50.642709][ T5492] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.662475][ T5492] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 92.180888][ T1222] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.10.31' (ED25519) to the list of known hosts. execve("./syz-executor3243557626", ["./syz-executor3243557626"], 0x7ffc310e3ce0 /* 10 vars */) = 0 brk(NULL) = 0x555590da8000 brk(0x555590da8d40) = 0x555590da8d40 arch_prctl(ARCH_SET_FS, 0x555590da83c0) = 0 set_tid_address(0x555590da8690) = 5844 set_robust_list(0x555590da86a0, 24) = 0 rseq(0x555590da8ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3243557626", 4096) = 28 getrandom("\x4c\x0a\x15\x44\xe3\x5d\x8f\xb7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555590da8d40 brk(0x555590dc9d40) = 0x555590dc9d40 brk(0x555590dca000) = 0x555590dca000 mprotect(0x7fac725fc000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 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./strace-static-x86_64: Process 5845 attached [pid 5845] set_robust_list(0x555590da86a0, 24 [pid 5844] <... clone resumed>, child_tidptr=0x555590da8690) = 5845 [pid 5845] <... set_robust_list resumed>) = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] setpgid(0, 0) = 0 [pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1000", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] write(1, "executing program\n", 18executing program ) = 18 [pid 5845] futex(0x7fac7260260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5845] rt_sigaction(SIGRT_1, {sa_handler=0x7fac725a0370, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fac72591a20}, NULL, 8) = 0 [pid 5845] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fac72511000 [pid 5845] mprotect(0x7fac72512000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fac72531990, parent_tid=0x7fac72531990, exit_signal=0, stack=0x7fac72511000, stack_size=0x20300, tls=0x7fac725316c0}./strace-static-x86_64: Process 5846 attached [pid 5846] rseq(0x7fac72531fe0, 0x20, 0, 0x53053053) = 0 [pid 5845] <... clone3 resumed> => {parent_tid=[5846]}, 88) = 5846 [pid 5846] set_robust_list(0x7fac725319a0, 24 [pid 5845] rt_sigprocmask(SIG_SETMASK, [], [pid 5846] <... set_robust_list resumed>) = 0 [pid 5845] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5846] rt_sigprocmask(SIG_SETMASK, [], [pid 5845] futex(0x7fac72602608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5846] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5845] <... futex resumed>) = 0 [pid 5846] memfd_create("syzkaller", 0 [pid 5845] futex(0x7fac7260260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5846] <... memfd_create resumed>) = 3 [pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac6a000000 [pid 5846] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5846] munmap(0x7fac6a000000, 138412032) = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5846] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5846] close(3) = 0 [pid 5846] close(4) = 0 [pid 5846] mkdir("./file1", 0777) = 0 [ 124.800148][ T5846] loop0: detected capacity change from 0 to 256 [pid 5846] mount("/dev/loop0", "./file1", "exfat", 0, "") = 0 [pid 5846] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5846] chdir("./file1") = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5846] futex(0x7fac7260260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5846] futex(0x7fac72602608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5845] <... futex resumed>) = 0 [pid 5846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5845] futex(0x7fac72602608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5846] truncate("./file1", 48953 [pid 5845] <... futex resumed>) = 0 [pid 5845] futex(0x7fac7260260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5846] <... truncate resumed>) = 0 [pid 5846] futex(0x7fac7260260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5845] <... futex resumed>) = 0 [pid 5846] <... futex resumed>) = 1 [pid 5845] futex(0x7fac72602608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5846] open("./file1", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 0104 [pid 5845] <... futex resumed>) = 0 [pid 5845] futex(0x7fac7260260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5846] <... open resumed>) = 4 [ 124.845945][ T5846] exFAT-fs (loop0): Volume was not properly unmounted. Some data may be corrupt. Please run fsck. [ 124.856684][ T5846] exFAT-fs (loop0): Medium has reported failures. Some data may be lost. [ 124.871270][ T5846] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0xe5674ec2, utbl_chksum : 0xe619d30d) [pid 5846] futex(0x7fac7260260c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5846] futex(0x7fac72602608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5845] <... futex resumed>) = 0 [pid 5845] futex(0x7fac72602608, FUTEX_WAKE_PRIVATE, 1000000 [pid 5846] <... futex resumed>) = 0 [pid 5845] <... futex resumed>) = 1 [pid 5846] truncate("./file1", 58568 [ 124.925065][ T30] audit: type=1800 audit(1741771411.862:2): pid=5846 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor324" name="file1" dev="loop0" ino=2 res=0 errno=0 [pid 5845] futex(0x7fac7260260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5845] futex(0x7fac7260261c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fac724f0000 [pid 5845] mprotect(0x7fac724f1000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fac72510990, parent_tid=0x7fac72510990, exit_signal=0, stack=0x7fac724f0000, stack_size=0x20300, tls=0x7fac725106c0}./strace-static-x86_64: Process 5847 attached => {parent_tid=[5847]}, 88) = 5847 [pid 5847] rseq(0x7fac72510fe0, 0x20, 0, 0x53053053) = 0 [pid 5845] rt_sigprocmask(SIG_SETMASK, [], [pid 5847] set_robust_list(0x7fac725109a0, 24) = 0 [pid 5845] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5847] rt_sigprocmask(SIG_SETMASK, [], [pid 5845] futex(0x7fac72602618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5847] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5845] futex(0x7fac7260261c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5847] sendfile(4, 4, NULL, 34359738377 [pid 5845] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5845] exit_group(0) = ? [pid 5844] kill(-5845, SIGKILL) = 0 [pid 5844] kill(5845, SIGKILL) = 0 [pid 5844] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5844] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5844] getdents64(3, 0x555590da9730 /* 2 entries */, 32768) = 48 [pid 5844] getdents64(3, 0x555590da9730 /* 0 entries */, 32768) = 0 [pid 5844] close(3) = 0 [ 286.740095][ T31] INFO: task syz-executor324:5847 blocked for more than 143 seconds. [ 286.748623][ T31] Not tainted 6.14.0-rc6-syzkaller-00007-g0b46b049d6ec #0 [ 286.756466][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.765661][ T31] task:syz-executor324 state:D stack:24944 pid:5847 tgid:5845 ppid:5844 task_flags:0x400040 flags:0x00004006 [ 286.778823][ T31] Call Trace: [ 286.782160][ T31] [ 286.785140][ T31] __schedule+0x18bc/0x4c40 [ 286.790324][ T31] ? preempt_schedule_notrace_thunk+0x1a/0x30 [ 286.796466][ T31] ? __pfx___schedule+0x10/0x10 [ 286.801829][ T31] ? __pfx_lock_release+0x10/0x10 [ 286.806903][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.813389][ T31] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.820084][ T31] ? _raw_spin_lock_irq+0xdf/0x120 [ 286.825252][ T31] ? schedule+0x90/0x320 [ 286.829913][ T31] schedule+0x14b/0x320 [ 286.834111][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.840480][ T31] rwsem_down_write_slowpath+0xeee/0x13b0 [ 286.846236][ T31] ? rwsem_down_write_slowpath+0xa09/0x13b0 [ 286.852606][ T31] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 286.859111][ T31] ? __pfx_lock_acquire+0x10/0x10 [ 286.864214][ T31] down_write+0x1d7/0x220 [ 286.868997][ T31] ? __pfx_down_write+0x10/0x10 [ 286.873884][ T31] ? kmem_cache_alloc_noprof+0x22d/0x380 [ 286.880569][ T31] __blockdev_direct_IO+0x31d/0x4890 [ 286.885907][ T31] ? page_ext_get+0x20/0x2a0 [ 286.891042][ T31] ? __pfx_exfat_get_block+0x10/0x10 [ 286.896394][ T31] ? get_page_from_freelist+0x3651/0x37a0 [ 286.902643][ T31] ? __pfx___might_resched+0x10/0x10 [ 286.907973][ T31] ? __pfx___blockdev_direct_IO+0x10/0x10 [ 286.914122][ T31] ? filemap_write_and_wait_range+0x1ec/0x3a0 [ 286.920564][ T31] ? __pfx_filemap_write_and_wait_range+0x10/0x10 [ 286.927041][ T31] ? __alloc_frozen_pages_noprof+0x350/0x710 [ 286.933485][ T31] exfat_direct_IO+0x151/0x400 [ 286.938300][ T31] generic_file_read_iter+0x341/0x550 [ 286.944183][ T31] copy_splice_read+0x637/0xb40 [ 286.949365][ T31] ? __pfx_copy_splice_read+0x10/0x10 [ 286.954812][ T31] ? alloc_pipe_info+0x370/0x4d0 [ 286.960275][ T31] splice_direct_to_actor+0x4fa/0xc80 [ 286.965720][ T31] ? __pfx_direct_splice_actor+0x10/0x10 [ 286.971771][ T31] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 286.977711][ T31] ? __fget_files+0x2a/0x410 [ 286.982780][ T31] ? __pfx_lock_release+0x10/0x10 [ 286.987850][ T31] ? do_raw_spin_lock+0x14f/0x370 [ 286.993902][ T31] do_splice_direct+0x289/0x3e0 [ 286.999115][ T31] ? __pfx_do_splice_direct+0x10/0x10 [ 287.004558][ T31] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 287.010894][ T31] ? rw_verify_area+0x243/0x630 [ 287.015792][ T31] do_sendfile+0x564/0x8a0 [ 287.020729][ T31] ? __pfx_do_sendfile+0x10/0x10 [ 287.025708][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.031358][ T31] ? ptrace_notify+0x27f/0x380 [ 287.036186][ T31] __se_sys_sendfile64+0x17c/0x1e0 [ 287.041781][ T31] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 287.047526][ T31] ? do_syscall_64+0x100/0x230 [ 287.052828][ T31] do_syscall_64+0xf3/0x230 [ 287.057496][ T31] ? clear_bhb_loop+0x35/0x90 [ 287.063057][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.069264][ T31] RIP: 0033:0x7fac7257a489 [ 287.073716][ T31] RSP: 002b:00007fac72510218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 287.082633][ T31] RAX: ffffffffffffffda RBX: 00007fac72602618 RCX: 00007fac7257a489 [ 287.090868][ T31] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 287.099849][ T31] RBP: 00007fac72602610 R08: 00007ffe20f900a7 R09: 0000000000000000 [ 287.107858][ T31] R10: 0000000800000009 R11: 0000000000000246 R12: 00007fac725cf5cc [ 287.116390][ T31] R13: 0031656c69662f2e R14: 0000400000000240 R15: 0000400000000140 [ 287.124775][ T31] [ 287.127883][ T31] [ 287.127883][ T31] Showing all locks held in the system: [ 287.136202][ T31] 1 lock held by khungtaskd/31: [ 287.141405][ T31] #0: ffffffff8eb393e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 287.151709][ T31] 2 locks held by getty/5583: [ 287.156412][ T31] #0: ffff8880353700a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.166664][ T31] #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 [ 287.177149][ T31] 2 locks held by syz-executor324/5846: [ 287.182993][ T31] 1 lock held by syz-executor324/5847: [ 287.188711][ T31] #0: ffff8880738582a0 (&sb->s_type->i_mutex_key#14){++++}-{4:4}, at: __blockdev_direct_IO+0x31d/0x4890 [ 287.200329][ T31] [ 287.202685][ T31] ============================================= [ 287.202685][ T31] [ 287.212232][ T31] NMI backtrace for cpu 0 [ 287.212255][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc6-syzkaller-00007-g0b46b049d6ec #0 [ 287.212277][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 287.212289][ T31] Call Trace: [ 287.212296][ T31] [ 287.212304][ T31] dump_stack_lvl+0x241/0x360 [ 287.212331][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.212358][ T31] ? __pfx__printk+0x10/0x10 [ 287.212401][ T31] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.212433][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.212456][ T31] ? _printk+0xd5/0x120 [ 287.212486][ T31] ? __pfx__printk+0x10/0x10 [ 287.212515][ T31] ? __wake_up_klogd+0xcc/0x110 [ 287.212542][ T31] ? __pfx__printk+0x10/0x10 [ 287.212573][ T31] ? __rcu_read_unlock+0xa1/0x110 [ 287.212603][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.212629][ T31] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.212658][ T31] watchdog+0x1058/0x10a0 [ 287.212689][ T31] ? watchdog+0x1ea/0x10a0 [ 287.212722][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.212751][ T31] kthread+0x7a9/0x920 [ 287.212780][ T31] ? __pfx_kthread+0x10/0x10 [ 287.212811][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.212840][ T31] ? __pfx_kthread+0x10/0x10 [ 287.212867][ T31] ? __pfx_kthread+0x10/0x10 [ 287.212900][ T31] ? __pfx_kthread+0x10/0x10 [ 287.212927][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.212953][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 287.212981][ T31] ? __pfx_kthread+0x10/0x10 [ 287.213011][ T31] ret_from_fork+0x4b/0x80 [ 287.213036][ T31] ? __pfx_kthread+0x10/0x10 [ 287.213066][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.213102][ T31] [ 287.213110][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.382620][ C1] NMI backtrace for cpu 1 [ 287.382634][ C1] CPU: 1 UID: 0 PID: 5846 Comm: syz-executor324 Not tainted 6.14.0-rc6-syzkaller-00007-g0b46b049d6ec #0 [ 287.382654][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 287.382665][ C1] RIP: 0010:__bread_gfp+0x3b0/0x400 [ 287.382688][ C1] Code: 00 e8 74 83 db ff f0 41 ff 0e eb 17 e8 19 c2 76 ff 90 48 c7 c7 20 5e 39 8c e8 2c 7e 36 ff 90 0f 0b 90 90 45 31 ff 4c 89 f8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 ed c1 76 ff eb e4 89 [ 287.382702][ C1] RSP: 0018:ffffc9000414f8f8 EFLAGS: 00000293 [ 287.382718][ C1] RAX: ffff888078fdf2b8 RBX: ffff88807e5f4160 RCX: ffff88807e950000 [ 287.382731][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 287.382741][ C1] RBP: 0000000000000001 R08: ffffffff824b19c1 R09: 1ffff1100f1fbe57 [ 287.382752][ C1] R10: dffffc0000000000 R11: ffffed100f1fbe58 R12: 0000000000000008 [ 287.382764][ C1] R13: ffff888148c87300 R14: 0000000000000200 R15: ffff888078fdf2b8 [ 287.382776][ C1] FS: 00007fac725316c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 287.382790][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.382801][ C1] CR2: 0000555590db1738 CR3: 0000000076738000 CR4: 00000000003526f0 [ 287.382816][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.382826][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.382836][ C1] Call Trace: [ 287.382844][ C1] [ 287.382851][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.382872][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.382898][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.382918][ C1] ? nmi_handle+0x2a/0x5a0 [ 287.382949][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.382969][ C1] ? nmi_handle+0x14f/0x5a0 [ 287.382993][ C1] ? nmi_handle+0x2a/0x5a0 [ 287.383017][ C1] ? __bread_gfp+0x3b0/0x400 [ 287.383033][ C1] ? default_do_nmi+0x63/0x160 [ 287.383053][ C1] ? exc_nmi+0x123/0x1f0 [ 287.383070][ C1] ? end_repeat_nmi+0xf/0x53 [ 287.383104][ C1] ? __bread_gfp+0xc1/0x400 [ 287.383121][ C1] ? __bread_gfp+0x3b0/0x400 [ 287.383138][ C1] ? __bread_gfp+0x3b0/0x400 [ 287.383155][ C1] ? __bread_gfp+0x3b0/0x400 [ 287.383171][ C1] [ 287.383177][ C1] [ 287.383184][ C1] exfat_ent_get+0x14d/0x400 [ 287.383209][ C1] exfat_find_last_cluster+0x15d/0x380 [ 287.383233][ C1] ? __pfx_exfat_find_last_cluster+0x10/0x10 [ 287.383257][ C1] ? inode_newsize_ok+0x181/0x1c0 [ 287.383282][ C1] exfat_setattr+0xa8d/0x1a90 [ 287.383315][ C1] ? __pfx_exfat_setattr+0x10/0x10 [ 287.383337][ C1] ? evm_inode_setattr+0x1b2/0x7d0 [ 287.383369][ C1] ? security_inode_setattr+0xdb/0x350 [ 287.383393][ C1] ? __pfx_exfat_setattr+0x10/0x10 [ 287.383417][ C1] notify_change+0xbca/0xe90 [ 287.383446][ C1] do_truncate+0x220/0x310 [ 287.383470][ C1] ? __pfx_do_truncate+0x10/0x10 [ 287.383490][ C1] ? rcu_read_lock_any_held+0xb7/0x160 [ 287.383513][ C1] ? mnt_get_write_access+0x226/0x2b0 [ 287.383536][ C1] ? bpf_lsm_path_truncate+0x9/0x10 [ 287.383555][ C1] vfs_truncate+0x492/0x530 [ 287.383579][ C1] ? __pfx_vfs_truncate+0x10/0x10 [ 287.383600][ C1] ? kmem_cache_free+0x195/0x410 [ 287.383616][ C1] ? user_path_at+0x44/0x60 [ 287.383640][ C1] do_sys_truncate+0xdb/0x190 [ 287.383662][ C1] ? __pfx_do_sys_truncate+0x10/0x10 [ 287.383685][ C1] ? do_syscall_64+0x100/0x230 [ 287.383715][ C1] do_syscall_64+0xf3/0x230 [ 287.383740][ C1] ? clear_bhb_loop+0x35/0x90 [ 287.383765][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.383788][ C1] RIP: 0033:0x7fac7257a489 [ 287.383802][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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 b0 ff ff ff f7 d8 64 89 01 48 [ 287.383815][ C1] RSP: 002b:00007fac72531218 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 287.383831][ C1] RAX: ffffffffffffffda RBX: 00007fac72602608 RCX: 00007fac7257a489 [ 287.383844][ C1] RDX: 00007fac7257a489 RSI: 000000000000e4c8 RDI: 0000400000000140 [ 287.383855][ C1] RBP: 00007fac72602600 R08: 0000000000000000 R09: 0000000000000000 [ 287.383865][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fac725cf5cc [ 287.383875][ C1] R13: 0031656c69662f2e R14: 0000400000000240 R15: 0000400000000140 [ 287.383895][ C1] [ 287.383903][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.283 msecs [ 287.384778][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.819168][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc6-syzkaller-00007-g0b46b049d6ec #0 [ 287.829671][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 287.839728][ T31] Call Trace: [ 287.843021][ T31] [ 287.845958][ T31] dump_stack_lvl+0x241/0x360 [ 287.850663][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.855866][ T31] ? __pfx__printk+0x10/0x10 [ 287.860478][ T31] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.866476][ T31] ? vscnprintf+0x5d/0x90 [ 287.870822][ T31] panic+0x349/0x880 [ 287.874739][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.880903][ T31] ? __pfx_panic+0x10/0x10 [ 287.885335][ T31] ? preempt_schedule_thunk+0x1a/0x30 [ 287.890721][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.896884][ T31] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 287.903048][ T31] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 287.909214][ T31] watchdog+0x1097/0x10a0 [ 287.913558][ T31] ? watchdog+0x1ea/0x10a0 [ 287.917991][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.922681][ T31] kthread+0x7a9/0x920 [ 287.926766][ T31] ? __pfx_kthread+0x10/0x10 [ 287.931371][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.936068][ T31] ? __pfx_kthread+0x10/0x10 [ 287.940670][ T31] ? __pfx_kthread+0x10/0x10 [ 287.945276][ T31] ? __pfx_kthread+0x10/0x10 [ 287.949880][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.955087][ T31] ? lockdep_hardirqs_on+0x99/0x150 [ 287.960302][ T31] ? __pfx_kthread+0x10/0x10 [ 287.964912][ T31] ret_from_fork+0x4b/0x80 [ 287.969339][ T31] ? __pfx_kthread+0x10/0x10 [ 287.974472][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.979262][ T31] [ 287.982580][ T31] Kernel Offset: disabled [ 287.986906][ T31] Rebooting in 86400 seconds..