./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3259067924 <...> Warning: Permanently added '10.128.10.38' (ED25519) to the list of known hosts. execve("./syz-executor3259067924", ["./syz-executor3259067924"], 0x7ffd04253a80 /* 10 vars */) = 0 brk(NULL) = 0x555580b7a000 brk(0x555580b7ad00) = 0x555580b7ad00 arch_prctl(ARCH_SET_FS, 0x555580b7a380) = 0 set_tid_address(0x555580b7a650) = 5082 set_robust_list(0x555580b7a660, 24) = 0 rseq(0x555580b7aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3259067924", 4096) = 28 getrandom("\x17\x21\xdb\x52\x08\xc6\xae\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555580b7ad00 brk(0x555580b9bd00) = 0x555580b9bd00 brk(0x555580b9c000) = 0x555580b9c000 mprotect(0x7f1f4b2be000, 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./strace-static-x86_64: Process 5083 attached , child_tidptr=0x555580b7a650) = 5083 [pid 5083] set_robust_list(0x555580b7a660, 24) = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setpgid(0, 0) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] memfd_create("syzkaller", 0) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1f42c00000 [pid 5083] 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"..., 16777216) = 16777216 [pid 5083] munmap(0x7f1f42c00000, 138412032) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5083] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5083] close(3) = 0 [pid 5083] close(4) = 0 [pid 5083] mkdir("./file0", 0777) = 0 [ 72.137202][ T5083] loop0: detected capacity change from 0 to 32768 [ 72.220000][ T5083] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=xxhash,compression=zstd,nocow [ 72.234342][ T5083] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 72.257148][ T5083] bcachefs (loop0): alloc_read... done [ 72.263331][ T5083] bcachefs (loop0): stripes_read... done [pid 5083] mount("/dev/loop0", "./file0", "bcachefs", MS_NODEV|MS_SYNCHRONOUS|MS_RELATIME|MS_STRICTATIME, "data_checksum=xxhash,spr_hash=siphash,data_checksum=xxhash,compression=zstd,") = 0 [pid 5083] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5083] chdir("./file0") = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5083] ioctl(4, LOOP_CLR_FD) = 0 [pid 5083] close(4) = 0 [ 72.269822][ T5083] bcachefs (loop0): snapshots_read... done [ 72.279437][ T5083] bcachefs (loop0): journal_replay... done [ 72.285400][ T5083] bcachefs (loop0): resume_logged_ops... done [ 72.293574][ T5083] bcachefs (loop0): going read-write [ 72.302775][ T5083] bcachefs (loop0): done starting filesystem [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = 4 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5083] ftruncate(5, 33587195) = 0 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_DIRECT|O_NOFOLLOW|O_NOATIME, 000) = 6 [pid 5083] open("./bus", O_RDONLY) = 7 [ 72.383809][ T28] audit: type=1804 audit(1715225042.490:2): pid=5083 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor325" name="/root/file0/bus" dev="loop0" ino=1073741829 res=1 errno=0 [ 72.498719][ T1083] bcachefs (loop0 inum 1073741827 offset 0): data data checksum error, type chacha20_poly1305_80: got d7b7aa05396b21f13a2f should be 9894d374992ac97ed273 [ 72.498734][ T2474] bcachefs (loop0 inum 1073741825 offset 0): data data checksum error, type chacha20_poly1305_80: got 6b55c2f38f6b316a4c68 should be 3f9e892ceabd1d47b0c2 [ 72.499199][ T2474] bcachefs (loop0 inum 1073741825 offset 0): no device to read from [ 72.515729][ T1083] bcachefs (loop0 inum 1073741827 offset 0): no device to read from [pid 5083] sendfile(6, 7, NULL, 281483568746501 [pid 5082] kill(-5083, SIGKILL) = 0 [pid 5082] kill(5083, SIGKILL) = 0 [pid 5082] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5082] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5082] getdents64(3, 0x555580b7b6f0 /* 2 entries */, 32768) = 48 [pid 5082] getdents64(3, 0x555580b7b6f0 /* 0 entries */, 32768) = 0 [pid 5082] close(3) = 0 [ 87.141401][ T45] cfg80211: failed to load regulatory.db [ 286.813893][ T29] INFO: task syz-executor325:5083 blocked for more than 143 seconds. [ 286.822087][ T29] Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 286.829745][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.838570][ T29] task:syz-executor325 state:D stack:12240 pid:5083 tgid:5083 ppid:5082 flags:0x00004006 [ 286.848951][ T29] Call Trace: [ 286.852416][ T29] [ 286.855519][ T29] __schedule+0x1796/0x4a00 [ 286.860103][ T29] ? __pfx___schedule+0x10/0x10 [ 286.865069][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.870217][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.875580][ T29] ? schedule+0x90/0x320 [ 286.879888][ T29] schedule+0x14b/0x320 [ 286.884216][ T29] __closure_sync+0x259/0x2f0 [ 286.888986][ T29] ? __closure_sync+0x149/0x2f0 [ 286.893961][ T29] ? __pfx___closure_sync+0x10/0x10 [ 286.899331][ T29] __bch2_write+0x5458/0x5bd0 [ 286.904206][ T29] ? __pfx_validate_chain+0x10/0x10 [ 286.909485][ T29] ? find_get_entries+0x1bd/0xa10 [ 286.914690][ T29] ? __pfx___bch2_write+0x10/0x10 [ 286.919908][ T29] ? bch2_write+0xf92/0x1590 [ 286.924643][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.929723][ T29] ? do_raw_spin_unlock+0x13c/0x8b0 [ 286.935120][ T29] bch2_write+0x947/0x1590 [ 286.939588][ T29] ? __pfx_bch2_write+0x10/0x10 [ 286.944564][ T29] ? iov_iter_revert+0x1be/0x390 [ 286.949556][ T29] ? bch2_direct_write+0x1160/0x3050 [ 286.955044][ T29] bch2_direct_write+0x1a52/0x3050 [ 286.960250][ T29] ? __pfx_bch2_direct_write+0x10/0x10 [ 286.965841][ T29] ? iter_file_splice_write+0x308/0x14e0 [ 286.971512][ T29] ? kasan_save_track+0x51/0x80 [ 286.976527][ T29] ? kasan_save_track+0x3f/0x80 [ 286.981423][ T29] ? __kasan_kmalloc+0x98/0xb0 [ 286.986309][ T29] ? __kmalloc+0x233/0x4a0 [ 286.990784][ T29] bch2_write_iter+0x206/0x2840 [ 286.995776][ T29] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.001914][ T29] ? __pfx_bch2_write_iter+0x10/0x10 [ 287.007419][ T29] ? splice_from_pipe_next+0x606/0x660 [ 287.012923][ T29] ? rcu_is_watching+0x15/0xb0 [ 287.017818][ T29] iter_file_splice_write+0xbd7/0x14e0 [ 287.023356][ T29] ? __pfx_iter_file_splice_write+0x10/0x10 [ 287.029375][ T29] ? rcu_read_lock_any_held+0xb7/0x160 [ 287.035035][ T29] ? __pfx_iter_file_splice_write+0x10/0x10 [ 287.040970][ T29] direct_splice_actor+0x11e/0x220 [ 287.046190][ T29] splice_direct_to_actor+0x58e/0xc90 [ 287.051606][ T29] ? __lock_acquire+0x1346/0x1fd0 [ 287.056773][ T29] ? __pfx_direct_splice_actor+0x10/0x10 [ 287.062442][ T29] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 287.068557][ T29] do_splice_direct+0x28c/0x3e0 [ 287.073469][ T29] ? __pfx_do_splice_direct+0x10/0x10 [ 287.078941][ T29] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 287.084949][ T29] ? rw_verify_area+0x1d2/0x580 [ 287.089871][ T29] do_sendfile+0x56d/0xdc0 [ 287.094405][ T29] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.100781][ T29] ? __pfx_do_sendfile+0x10/0x10 [ 287.105865][ T29] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.111118][ T29] ? ptrace_notify+0x279/0x380 [ 287.116008][ T29] __se_sys_sendfile64+0x17c/0x1e0 [ 287.121165][ T29] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 287.126992][ T29] ? do_syscall_64+0x102/0x240 [ 287.131870][ T29] do_syscall_64+0xf5/0x240 [ 287.136457][ T29] ? clear_bhb_loop+0x35/0x90 [ 287.141193][ T29] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.147207][ T29] RIP: 0033:0x7f1f4b239bd9 [ 287.151744][ T29] RSP: 002b:00007ffe5d38bd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 287.160276][ T29] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1f4b239bd9 [ 287.168377][ T29] RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 [ 287.176434][ T29] RBP: 00007f1f4b2be5f0 R08: 0000555580b7b4c0 R09: 0000555580b7b4c0 [ 287.184489][ T29] R10: 0001000200201005 R11: 0000000000000246 R12: 00007ffe5d38bdc0 [ 287.192469][ T29] R13: 00007ffe5d38bfe8 R14: 431bde82d7b634db R15: 00007f1f4b28203b [ 287.200554][ T29] [ 287.203620][ T29] [ 287.203620][ T29] Showing all locks held in the system: [ 287.211465][ T29] 1 lock held by khungtaskd/29: [ 287.216463][ T29] #0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 287.226459][ T29] 5 locks held by kworker/u8:5/1083: [ 287.231813][ T29] 1 lock held by klogd/4520: [ 287.239309][ T29] 2 locks held by getty/4836: [ 287.244084][ T29] #0: ffff88802af640a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.254042][ T29] #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 287.264361][ T29] 1 lock held by syz-executor325/5083: [ 287.269871][ T29] #0: ffff888023eba420 (sb_writers#9){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 [ 287.279669][ T29] [ 287.282103][ T29] ============================================= [ 287.282103][ T29] [ 287.290612][ T29] NMI backtrace for cpu 1 [ 287.294961][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 287.304777][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 287.314855][ T29] Call Trace: [ 287.318145][ T29] [ 287.321084][ T29] dump_stack_lvl+0x241/0x360 [ 287.325782][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.330992][ T29] ? __pfx__printk+0x10/0x10 [ 287.335595][ T29] ? vprintk_emit+0x631/0x770 [ 287.340280][ T29] ? __pfx_vprintk_emit+0x10/0x10 [ 287.345490][ T29] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.350437][ T29] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.355900][ T29] ? _printk+0xd5/0x120 [ 287.360077][ T29] ? __pfx__printk+0x10/0x10 [ 287.364679][ T29] ? __wake_up_klogd+0xcc/0x110 [ 287.369557][ T29] ? __pfx__printk+0x10/0x10 [ 287.374155][ T29] ? __rcu_read_unlock+0xa1/0x110 [ 287.379193][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.385179][ T29] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.391172][ T29] watchdog+0xfde/0x1020 [ 287.395427][ T29] ? watchdog+0x1ea/0x1020 [ 287.399860][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.404558][ T29] kthread+0x2f0/0x390 [ 287.408640][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.413323][ T29] ? __pfx_kthread+0x10/0x10 [ 287.417953][ T29] ret_from_fork+0x4b/0x80 [ 287.422413][ T29] ? __pfx_kthread+0x10/0x10 [ 287.427036][ T29] ret_from_fork_asm+0x1a/0x30 [ 287.431837][ T29] [ 287.435022][ T29] Sending NMI from CPU 1 to CPUs 0: [ 287.440269][ C0] NMI backtrace for cpu 0 [ 287.440283][ C0] CPU: 0 PID: 1083 Comm: kworker/u8:5 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 287.440302][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 287.440312][ C0] Workqueue: events_unbound toggle_allocation_gate [ 287.440341][ C0] RIP: 0010:lock_acquire+0x1a4/0x550 [ 287.440361][ C0] Code: 00 00 00 00 00 9c 8f 84 24 80 00 00 00 42 80 3c 2b 00 74 08 4c 89 ff e8 5a de 84 00 48 8d 5c 24 60 4c 8b bc 24 80 00 00 00 fa <48> c7 c7 80 c5 ca 8b e8 30 17 05 0a 65 ff 05 49 05 90 7e 45 31 c9 [ 287.440375][ C0] RSP: 0018:ffffc900046df420 EFLAGS: 00000046 [ 287.440389][ C0] RAX: 0000000000000000 RBX: ffffc900046df480 RCX: ffffffff81728454 [ 287.440402][ C0] RDX: 0000000000000000 RSI: ffffffff8c1eac80 RDI: ffffffff8c1eac40 [ 287.440414][ C0] RBP: ffffc900046df568 R08: ffffffff8fa7cb6f R09: 1ffffffff1f4f96d [ 287.440427][ C0] R10: dffffc0000000000 R11: fffffbfff1f4f96e R12: 1ffff920008dbe8c [ 287.440440][ C0] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000246 [ 287.440452][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 287.440467][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.440479][ C0] CR2: 000055c91826b600 CR3: 000000000e134000 CR4: 00000000003506f0 [ 287.440495][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.440505][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.440516][ C0] Call Trace: [ 287.440522][ C0] [ 287.440529][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.440551][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.440570][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.440589][ C0] ? nmi_handle+0x2a/0x5a0 [ 287.440616][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.440638][ C0] ? nmi_handle+0x14f/0x5a0 [ 287.440656][ C0] ? nmi_handle+0x2a/0x5a0 [ 287.440674][ C0] ? lock_acquire+0x1a4/0x550 [ 287.440692][ C0] ? default_do_nmi+0x63/0x160 [ 287.440712][ C0] ? exc_nmi+0x123/0x1f0 [ 287.440731][ C0] ? end_repeat_nmi+0xf/0x53 [ 287.440757][ C0] ? lock_acquire+0xd4/0x550 [ 287.440774][ C0] ? lock_acquire+0x1a4/0x550 [ 287.440792][ C0] ? lock_acquire+0x1a4/0x550 [ 287.440810][ C0] ? lock_acquire+0x1a4/0x550 [ 287.440827][ C0] [ 287.440833][ C0] [ 287.440843][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.440864][ C0] ? __pfx_switch_ldt+0x10/0x10 [ 287.440884][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.440906][ C0] __pte_offset_map+0x9e/0x380 [ 287.440932][ C0] ? __pte_offset_map+0x82/0x380 [ 287.440965][ C0] ? __pfx___pte_offset_map+0x10/0x10 [ 287.440998][ C0] __pte_offset_map_lock+0xc7/0x300 [ 287.441024][ C0] ? __text_poke+0xaf1/0xd30 [ 287.441045][ C0] ? __pfx_lock_release+0x10/0x10 [ 287.441062][ C0] ? __pfx___pte_offset_map_lock+0x10/0x10 [ 287.441091][ C0] ? do_raw_spin_unlock+0x13c/0x8b0 [ 287.441115][ C0] ? walk_to_pmd+0x19b/0x240 [ 287.441140][ C0] ? __kmalloc_node_track_caller+0x126/0x4f0 [ 287.441166][ C0] __text_poke+0x2c5/0xd30 [ 287.441185][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 287.441207][ C0] ? __kmalloc+0x123/0x4a0 [ 287.441231][ C0] ? __pfx_text_poke_memcpy+0x10/0x10 [ 287.441253][ C0] ? __pfx___text_poke+0x10/0x10 [ 287.441272][ C0] ? __kmalloc+0x122/0x4a0 [ 287.441296][ C0] ? perf_event_text_poke+0x258/0x330 [ 287.441326][ C0] ? __pfx_perf_event_text_poke+0x10/0x10 [ 287.441352][ C0] ? __mutex_trylock_common+0x183/0x2e0 [ 287.441375][ C0] ? __pfx___might_resched+0x10/0x10 [ 287.441404][ C0] text_poke_bp_batch+0x59c/0xb30 [ 287.441432][ C0] ? __kmalloc_node_track_caller+0x126/0x4f0 [ 287.441459][ C0] ? __pfx_text_poke_bp_batch+0x10/0x10 [ 287.441485][ C0] ? arch_jump_label_transform_queue+0x9b/0x100 [ 287.441513][ C0] ? process_scheduled_works+0x91b/0x17c0 [ 287.441532][ C0] text_poke_finish+0x30/0x50 [ 287.441552][ C0] arch_jump_label_transform_apply+0x1c/0x30 [ 287.441577][ C0] static_key_disable_cpuslocked+0xce/0x1c0 [ 287.441601][ C0] static_key_disable+0x1a/0x20 [ 287.441620][ C0] toggle_allocation_gate+0x1b8/0x250 [ 287.441643][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 287.441666][ C0] ? __pfx_autoremove_wake_function+0x10/0x10 [ 287.441691][ C0] process_scheduled_works+0xa10/0x17c0 [ 287.441726][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 287.441749][ C0] ? assign_work+0x364/0x3d0 [ 287.441769][ C0] worker_thread+0x86d/0xd70 [ 287.441797][ C0] ? __kthread_parkme+0x169/0x1d0 [ 287.441819][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.441837][ C0] kthread+0x2f0/0x390 [ 287.441859][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.441877][ C0] ? __pfx_kthread+0x10/0x10 [ 287.441898][ C0] ret_from_fork+0x4b/0x80 [ 287.441923][ C0] ? __pfx_kthread+0x10/0x10 [ 287.441944][ C0] ret_from_fork_asm+0x1a/0x30 [ 287.441983][ C0] [ 287.441990][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.721 msecs [ 287.442267][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.928454][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 287.938345][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 287.948397][ T29] Call Trace: [ 287.951717][ T29] [ 287.954651][ T29] dump_stack_lvl+0x241/0x360 [ 287.959351][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.964559][ T29] ? __pfx__printk+0x10/0x10 [ 287.969154][ T29] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.975162][ T29] ? vscnprintf+0x5d/0x90 [ 287.979506][ T29] panic+0x349/0x860 [ 287.983418][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.989582][ T29] ? __pfx_panic+0x10/0x10 [ 287.994005][ T29] ? tick_nohz_tick_stopped+0x82/0xb0 [ 287.999575][ T29] ? __irq_work_queue_local+0x137/0x410 [ 288.005131][ T29] ? irq_work_queue+0xca/0x150 [ 288.009988][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 288.015976][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 288.021964][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 288.027953][ T29] ? nmi_trigger_cpumask_backtrace+0x251/0x320 [ 288.034127][ T29] watchdog+0x101d/0x1020 [ 288.038472][ T29] ? watchdog+0x1ea/0x1020 [ 288.042908][ T29] ? __pfx_watchdog+0x10/0x10 [ 288.047583][ T29] kthread+0x2f0/0x390 [ 288.051653][ T29] ? __pfx_watchdog+0x10/0x10 [ 288.056350][ T29] ? __pfx_kthread+0x10/0x10 [ 288.060943][ T29] ret_from_fork+0x4b/0x80 [ 288.065375][ T29] ? __pfx_kthread+0x10/0x10 [ 288.069996][ T29] ret_from_fork_asm+0x1a/0x30 [ 288.074776][ T29] [ 288.078129][ T29] Kernel Offset: disabled [ 288.082463][ T29] Rebooting in 86400 seconds..