./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1208253513 <...> Warning: Permanently added '10.128.0.94' (ED25519) to the list of known hosts. execve("./syz-executor1208253513", ["./syz-executor1208253513"], 0x7fff3eb9ff20 /* 10 vars */) = 0 brk(NULL) = 0x555585948000 brk(0x555585948d00) = 0x555585948d00 arch_prctl(ARCH_SET_FS, 0x555585948380) = 0 set_tid_address(0x555585948650) = 5105 set_robust_list(0x555585948660, 24) = 0 rseq(0x555585948ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1208253513", 4096) = 28 getrandom("\xe7\xee\xb2\x3f\xf2\xaf\xbe\xb6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555585948d00 brk(0x555585969d00) = 0x555585969d00 brk(0x55558596a000) = 0x55558596a000 mprotect(0x7f45c5634000, 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 5106 attached , child_tidptr=0x555585948650) = 5106 [pid 5106] set_robust_list(0x555585948660, 24) = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] write(1, "executing program\n", 18executing program ) = 18 [pid 5106] chdir(NULL) = -1 EFAULT (Bad address) [pid 5106] memfd_create("syzkaller", 0) = 3 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f45bd000000 [pid 5106] 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 5106] munmap(0x7f45bd000000, 138412032) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] close(4) = 0 [pid 5106] mkdir("./bus", 0777) = 0 [ 265.300107][ T5106] loop0: detected capacity change from 0 to 32768 [ 265.382827][ T5106] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,nojournal_transaction_names [ 265.397168][ T5106] bcachefs (loop0): recovering from clean shutdown, journal seq 8 [ 265.418118][ T5106] bcachefs (loop0): alloc_read... done [ 265.423945][ T5106] bcachefs (loop0): stripes_read... done [pid 5106] mount("/dev/loop0", "./bus", "bcachefs", MS_SYNCHRONOUS, "") = 0 [pid 5106] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] chdir("./bus") = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5106] ioctl(4, LOOP_CLR_FD) = 0 [pid 5106] close(4) = 0 [pid 5106] fallocate(-1, 0, 0, 0) = -1 EBADF (Bad file descriptor) [pid 5106] creat("./bus", 000) = 4 [pid 5106] openat(AT_FDCWD, "/sys/kernel/debug/bluetooth/6lowpan_enable", O_RDWR) = 5 [pid 5106] readv(5, [], 0) = 0 [ 265.429721][ T5106] bcachefs (loop0): snapshots_read... done [ 265.438480][ T5106] bcachefs (loop0): journal_replay... done [ 265.444336][ T5106] bcachefs (loop0): resume_logged_ops... done [ 265.450722][ T5106] bcachefs (loop0): going read-write [ 265.459793][ T5106] bcachefs (loop0): done starting filesystem [pid 5106] write(4, "\x74\x68\x72\x65\x61\x64\x65\x64\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 258223742 [pid 5105] kill(-5106, SIGKILL) = 0 [pid 5105] kill(5106, SIGKILL) = 0 [pid 5105] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5105] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5105] getdents64(3, 0x5555859496f0 /* 2 entries */, 32768) = 48 [pid 5105] getdents64(3, 0x5555859496f0 /* 0 entries */, 32768) = 0 [pid 5105] close(3) = 0 [ 279.246923][ T5106] Allocator stuck? Waited for 10 seconds [ 279.246947][ T5106] Allocator debug: [ 279.246953][ T5106] hidden8448 [ 279.246957][ T5106] btree 2816 [ 279.246962][ T5106] data 6432 [ 279.246967][ T5106] cached 0 [ 279.246972][ T5106] reserved 0 [ 279.246977][ T5106] online_reserved 26616 [ 279.246981][ T5106] nr_inodes 9 [ 279.246986][ T5106] [ 279.246990][ T5106] freelist_wait waiting [ 279.246995][ T5106] open buckets allocated1 [ 279.247000][ T5106] open buckets total 1024 [ 279.247004][ T5106] open_buckets_wait empty [ 279.247009][ T5106] open_buckets_btree 0 [ 279.247035][ T5106] open_buckets_user 0 [ 279.247040][ T5106] btree reserve cache 0 [ 279.247045][ T5106] [ 279.247049][ T5106] Dev 0: [ 279.247053][ T5106] buckets sectors fragmented [ 279.247059][ T5106] free 58 0 0 [ 279.247064][ T5106] sb 25 6152 248 [ 279.247070][ T5106] journal 8 2048 0 [ 279.247076][ T5106] btree 11 2816 0 [ 279.247081][ T5106] user 26 6432 224 [ 279.247087][ T5106] cached 0 0 0 [ 279.247092][ T5106] parity 0 0 0 [ 279.247097][ T5106] stripe 0 0 0 [ 279.247103][ T5106] need_gc_gens 0 0 0 [ 279.247115][ T5106] need_discard 0 0 0 [ 279.247120][ T5106] [ 279.247124][ T5106] reserves: [ 279.247129][ T5106] stripe 60 [ 279.247134][ T5106] normal 58 [ 279.247138][ T5106] copygc 56 [ 279.247143][ T5106] btree 28 [ 279.247148][ T5106] btree_copygc 0 [ 279.247153][ T5106] reclaim 0 [ 279.247171][ T5106] interior_updates 0 [ 279.247176][ T5106] [ 279.247180][ T5106] open buckets 0 [ 279.247185][ T5106] buckets to invalidate 0 [ 279.247194][ T5106] [ 279.247198][ T5106] Copygc debug: [ 279.247203][ T5106] Currently waiting for: 0 B [ 279.247208][ T5106] Currently waiting since: 1.00 MiB [ 279.247217][ T5106] Currently calculated wait: 0 B [ 279.247222][ T5106] [ 279.247226][ T5106] Journal debug: [ 279.247231][ T5106] flags: replay_done,running,may_skip_flush [ 279.247236][ T5106] dirty journal entries: 0/32768 [ 279.247241][ T5106] seq: 11 [ 279.247246][ T5106] seq_ondisk: 11 [ 279.247251][ T5106] last_seq: 12 [ 279.247255][ T5106] last_seq_ondisk: 11 [ 279.247260][ T5106] flushed_seq_ondisk: 11 [ 279.247265][ T5106] watermark: stripe [ 279.247270][ T5106] each entry reserved: 361 [ 279.247275][ T5106] nr flush writes: 3 [ 279.247279][ T5106] nr noflush writes: 0 [ 279.247284][ T5106] average write size: 5.42 KiB [ 279.247289][ T5106] nr direct reclaim: 0 [ 279.247294][ T5106] nr background reclaim: 18 [ 279.247298][ T5106] reclaim kicked: 0 [ 279.247318][ T5106] reclaim runs in: 0 ms [ 279.247323][ T5106] blocked: 0 [ 279.247328][ T5106] current entry sectors: 256 [ 279.247332][ T5106] current entry error: ok [ 279.247337][ T5106] current entry: closed [ 279.247342][ T5106] unwritten entries: [ 279.247347][ T5106] last buf closed [ 279.247351][ T5106] space: [ 279.247355][ T5106] discarded 256:1536 [ 279.247361][ T5106] clean ondisk 256:1536 [ 279.247365][ T5106] clean 256:1536 [ 279.247370][ T5106] total 256:2048 [ 279.247375][ T5106] dev 0: [ 279.247380][ T5106] nr 8 [ 279.247384][ T5106] bucket size 256 [ 279.247389][ T5106] available 6:208 [ 279.247394][ T5106] discard_idx 0 [ 279.247399][ T5106] dirty_ondisk 0 (seq 11) [ 279.247404][ T5106] dirty_idx 0 (seq 11) [ 279.247409][ T5106] cur_idx 0 (seq 11) [ 279.247414][ T5106] [ 301.006193][ T130] Allocator stuck? Waited for 10 seconds [ 301.006215][ T130] Allocator debug: [ 301.006220][ T130] hidden8448 [ 301.006225][ T130] btree 2816 [ 301.006230][ T130] data 6432 [ 301.006235][ T130] cached 0 [ 301.006240][ T130] reserved 0 [ 301.006245][ T130] online_reserved 26616 [ 301.006250][ T130] nr_inodes 9 [ 301.006255][ T130] [ 301.006260][ T130] freelist_wait waiting [ 301.006265][ T130] open buckets allocated1 [ 301.006270][ T130] open buckets total 1024 [ 301.006275][ T130] open_buckets_wait empty [ 301.006280][ T130] open_buckets_btree 0 [ 301.006285][ T130] open_buckets_user 0 [ 301.006290][ T130] btree reserve cache 0 [ 301.006294][ T130] [ 301.006299][ T130] Dev 0: [ 301.006304][ T130] buckets sectors fragmented [ 301.006309][ T130] free 58 0 0 [ 301.006315][ T130] sb 25 6152 248 [ 301.006321][ T130] journal 8 2048 0 [ 301.006327][ T130] btree 11 2816 0 [ 301.006332][ T130] user 26 6432 224 [ 301.006338][ T130] cached 0 0 0 [ 301.006344][ T130] parity 0 0 0 [ 301.006349][ T130] stripe 0 0 0 [ 301.006355][ T130] need_gc_gens 0 0 0 [ 301.006361][ T130] need_discard 0 0 0 [ 301.006366][ T130] [ 301.006371][ T130] reserves: [ 301.006375][ T130] stripe 60 [ 301.006380][ T130] normal 58 [ 301.006385][ T130] copygc 56 [ 301.006390][ T130] btree 28 [ 301.006395][ T130] btree_copygc 0 [ 301.006400][ T130] reclaim 0 [ 301.006405][ T130] interior_updates 0 [ 301.006410][ T130] [ 301.006415][ T130] open buckets 0 [ 301.006419][ T130] buckets to invalidate 0 [ 301.006424][ T130] [ 301.006429][ T130] Copygc debug: [ 301.006434][ T130] Currently waiting for: 0 B [ 301.006439][ T130] Currently waiting since: 2.00 MiB [ 301.006444][ T130] Currently calculated wait: 0 B [ 301.006449][ T130] [ 301.006453][ T130] Journal debug: [ 301.006458][ T130] flags: replay_done,running,may_skip_flush [ 301.006464][ T130] dirty journal entries: 0/32768 [ 301.006469][ T130] seq: 11 [ 301.006474][ T130] seq_ondisk: 11 [ 301.006479][ T130] last_seq: 12 [ 301.006484][ T130] last_seq_ondisk: 11 [ 301.006489][ T130] flushed_seq_ondisk: 11 [ 301.006494][ T130] watermark: stripe [ 301.006499][ T130] each entry reserved: 361 [ 301.006504][ T130] nr flush writes: 3 [ 301.006509][ T130] nr noflush writes: 0 [ 301.006514][ T130] average write size: 5.42 KiB [ 301.006520][ T130] nr direct reclaim: 0 [ 301.006525][ T130] nr background reclaim: 18 [ 301.006530][ T130] reclaim kicked: 0 [ 301.006535][ T130] reclaim runs in: 0 ms [ 301.006540][ T130] blocked: 0 [ 301.006545][ T130] current entry sectors: 256 [ 301.006550][ T130] current entry error: ok [ 301.006555][ T130] current entry: closed [ 301.006560][ T130] unwritten entries: [ 301.006565][ T130] last buf closed [ 301.006570][ T130] space: [ 301.006574][ T130] discarded 256:1536 [ 301.006579][ T130] clean ondisk 256:1536 [ 301.006584][ T130] clean 256:1536 [ 301.006589][ T130] total 256:2048 [ 301.006595][ T130] dev 0: [ 301.006599][ T130] nr 8 [ 301.006604][ T130] bucket size 256 [ 301.006609][ T130] available 6:208 [ 301.006614][ T130] discard_idx 0 [ 301.006674][ T130] dirty_ondisk 0 (seq 11) [ 301.006680][ T130] dirty_idx 0 (seq 11) [ 301.006685][ T130] cur_idx 0 (seq 11) [ 301.006690][ T130] [ 430.275299][ T30] INFO: task syz-executor120:5106 blocked for more than 143 seconds. [ 430.283888][ T30] Not tainted 6.10.0-syzkaller-00017-g5e0497553643 #0 [ 430.291439][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.300188][ T30] task:syz-executor120 state:D stack:14744 pid:5106 tgid:5106 ppid:5105 flags:0x00004006 [ 430.310462][ T30] Call Trace: [ 430.313759][ T30] [ 430.316841][ T30] __schedule+0x17ae/0x4a10 [ 430.321384][ T30] ? __pfx___schedule+0x10/0x10 [ 430.326289][ T30] ? __blk_flush_plug+0x449/0x500 [ 430.331371][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.336458][ T30] ? bch2_print_allocator_stuck+0x143/0xc80 [ 430.342369][ T30] ? bch2_print_allocator_stuck+0x143/0xc80 [ 430.348340][ T30] ? bch2_printbuf_exit+0x6d/0xa0 [ 430.353383][ T30] ? schedule+0x90/0x320 [ 430.357701][ T30] schedule+0x14b/0x320 [ 430.361870][ T30] __closure_sync+0x259/0x2f0 [ 430.366598][ T30] ? __closure_sync+0x149/0x2f0 [ 430.371469][ T30] ? __pfx___closure_sync+0x10/0x10 [ 430.376739][ T30] __bch2_write+0x54a5/0x5c40 [ 430.381471][ T30] ? __pfx___bch2_write+0x10/0x10 [ 430.386654][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.392575][ T30] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 430.399116][ T30] ? ttwu_queue_wakelist+0x286/0x3b0 [ 430.404432][ T30] ? try_to_wake_up+0x939/0x1470 [ 430.409454][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.414491][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.420713][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.426013][ T30] bch2_write+0x947/0x1670 [ 430.430542][ T30] ? __pfx_bch2_write+0x10/0x10 [ 430.435761][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.441021][ T30] ? folio_unlock+0x126/0x2f0 [ 430.445929][ T30] __bch2_writepage+0x1416/0x2b50 [ 430.450981][ T30] ? folio_clear_dirty_for_io+0x7e1/0xcf0 [ 430.456768][ T30] ? rcu_is_watching+0x15/0xb0 [ 430.461543][ T30] ? __pfx___bch2_writepage+0x10/0x10 [ 430.467075][ T30] write_cache_pages+0xd0/0x230 [ 430.471972][ T30] ? __pfx___bch2_writepage+0x10/0x10 [ 430.477401][ T30] ? __pfx_write_cache_pages+0x10/0x10 [ 430.482873][ T30] ? blk_start_plug+0x70/0x1b0 [ 430.487684][ T30] bch2_writepages+0x14f/0x380 [ 430.492492][ T30] ? __pfx_bch2_writepages+0x10/0x10 [ 430.497839][ T30] ? __lock_acquire+0x1346/0x1fd0 [ 430.502879][ T30] ? __pfx_bch2_writepages+0x10/0x10 [ 430.508241][ T30] do_writepages+0x359/0x870 [ 430.512850][ T30] ? __pfx_do_writepages+0x10/0x10 [ 430.518018][ T30] ? filemap_fdatawrite_wbc+0x11a/0x180 [ 430.523668][ T30] ? do_raw_spin_lock+0x14f/0x370 [ 430.528754][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.533795][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.539139][ T30] ? wbc_attach_and_unlock_inode+0xbe/0x580 [ 430.545109][ T30] filemap_fdatawrite_wbc+0x125/0x180 [ 430.550503][ T30] file_write_and_wait_range+0x1aa/0x290 [ 430.556214][ T30] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 430.562435][ T30] ? up_write+0x1a9/0x590 [ 430.566820][ T30] ? __pfx_up_write+0x10/0x10 [ 430.571517][ T30] bch2_fsync+0x93/0x130 [ 430.575836][ T30] bch2_write_iter+0x262e/0x2840 [ 430.580806][ T30] ? __pfx_bch2_write_iter+0x10/0x10 [ 430.586163][ T30] ? rcu_read_lock_any_held+0xb7/0x160 [ 430.591645][ T30] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 430.597601][ T30] vfs_write+0xa72/0xc90 [ 430.601947][ T30] ? __pfx_bch2_write_iter+0x10/0x10 [ 430.607281][ T30] ? __pfx_vfs_write+0x10/0x10 [ 430.612065][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 430.617340][ T30] ksys_write+0x1a0/0x2c0 [ 430.621691][ T30] ? __pfx_ksys_write+0x10/0x10 [ 430.626591][ T30] ? do_syscall_64+0x100/0x230 [ 430.631368][ T30] do_syscall_64+0xf3/0x230 [ 430.635917][ T30] ? clear_bhb_loop+0x35/0x90 [ 430.640604][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.646563][ T30] RIP: 0033:0x7f45c55bbb19 [ 430.650992][ T30] RSP: 002b:00007ffcd5cb9d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 430.659466][ T30] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45c55bbb19 [ 430.667478][ T30] RDX: 000000000f642e7e RSI: 0000000020000200 RDI: 0000000000000004 [ 430.675548][ T30] RBP: 00007f45c56345f0 R08: 00005555859494c0 R09: 00005555859494c0 [ 430.683651][ T30] R10: 00005555859494c0 R11: 0000000000000246 R12: 00007ffcd5cb9dc0 [ 430.691676][ T30] R13: 00007ffcd5cb9fe8 R14: 431bde82d7b634db R15: 00007f45c560403b [ 430.699697][ T30] [ 430.702719][ T30] [ 430.702719][ T30] Showing all locks held in the system: [ 430.710567][ T30] 1 lock held by khungtaskd/30: [ 430.715469][ T30] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 430.725419][ T30] 3 locks held by kworker/u8:5/130: [ 430.730716][ T30] #0: ffff888017a8a148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 430.741996][ T30] #1: ffffc90002dcfd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 430.754689][ T30] #2: ffff8880241aa0e0 (&type->s_umount_key#44){.+.+}-{3:3}, at: super_trylock_shared+0x22/0xf0 [ 430.765347][ T30] 2 locks held by getty/4828: [ 430.770023][ T30] #0: ffff88802b3ed0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.780259][ T30] #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 430.790442][ T30] 1 lock held by syz-executor120/5106: [ 430.795928][ T30] #0: ffff8880241aa420 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 [ 430.804869][ T30] [ 430.807260][ T30] ============================================= [ 430.807260][ T30] [ 430.815726][ T30] NMI backtrace for cpu 1 [ 430.820067][ T30] CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-00017-g5e0497553643 #0 [ 430.829602][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 430.839927][ T30] Call Trace: [ 430.843214][ T30] [ 430.846141][ T30] dump_stack_lvl+0x241/0x360 [ 430.850825][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.856023][ T30] ? __pfx__printk+0x10/0x10 [ 430.860641][ T30] ? vprintk_emit+0x631/0x770 [ 430.865332][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 430.870362][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 430.875304][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.880767][ T30] ? _printk+0xd5/0x120 [ 430.884924][ T30] ? __pfx__printk+0x10/0x10 [ 430.889516][ T30] ? __wake_up_klogd+0xcc/0x110 [ 430.894451][ T30] ? __pfx__printk+0x10/0x10 [ 430.899041][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.905022][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.911003][ T30] watchdog+0xfde/0x1020 [ 430.915242][ T30] ? watchdog+0x1ea/0x1020 [ 430.919652][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.924515][ T30] kthread+0x2f0/0x390 [ 430.928595][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.933277][ T30] ? __pfx_kthread+0x10/0x10 [ 430.937891][ T30] ret_from_fork+0x4b/0x80 [ 430.942308][ T30] ? __pfx_kthread+0x10/0x10 [ 430.946891][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.951748][ T30] [ 430.954916][ T30] Sending NMI from CPU 1 to CPUs 0: [ 430.960215][ C0] NMI backtrace for cpu 0 [ 430.960227][ C0] CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.10.0-syzkaller-00017-g5e0497553643 #0 [ 430.960244][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 430.960254][ C0] Workqueue: events_unbound toggle_allocation_gate [ 430.960276][ C0] RIP: 0010:mark_lock+0x14d/0x350 [ 430.960294][ C0] Code: 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 1a cb 85 00 41 bc 01 00 00 00 44 85 33 74 16 44 89 e0 48 83 c4 10 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 cc cc cc cc e8 84 3c ff ff 85 c0 0f 84 33 01 00 [ 430.960307][ C0] RSP: 0018:ffffc90000ab7660 EFLAGS: 00000086 [ 430.960319][ C0] RAX: 0000000000000001 RBX: ffff888019aea958 RCX: ffffffff8172db5a [ 430.960331][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92f76580 [ 430.960341][ C0] RBP: 0000000000000002 R08: ffffffff92f76587 R09: 1ffffffff25eecb0 [ 430.960352][ C0] R10: dffffc0000000000 R11: fffffbfff25eecb1 R12: ffff888019aea978 [ 430.960363][ C0] R13: 0000000000000003 R14: 0000000000000004 R15: ffff888019aea958 [ 430.960373][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 430.960386][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.960397][ C0] CR2: 000055cc68e0c610 CR3: 000000000e132000 CR4: 00000000003506f0 [ 430.960411][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.960420][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.960429][ C0] Call Trace: [ 430.960436][ C0] [ 430.960442][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 430.960459][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 430.960476][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.960499][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 430.960515][ C0] ? nmi_handle+0x14f/0x5a0 [ 430.960535][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.960554][ C0] ? mark_lock+0x14d/0x350 [ 430.960569][ C0] ? default_do_nmi+0x63/0x160 [ 430.960586][ C0] ? exc_nmi+0x123/0x1f0 [ 430.960602][ C0] ? end_repeat_nmi+0xf/0x53 [ 430.960619][ C0] ? mark_lock+0x9a/0x350 [ 430.960634][ C0] ? mark_lock+0x14d/0x350 [ 430.960650][ C0] ? mark_lock+0x14d/0x350 [ 430.960666][ C0] ? mark_lock+0x14d/0x350 [ 430.960681][ C0] [ 430.960686][ C0] [ 430.960692][ C0] lockdep_hardirqs_on_prepare+0x282/0x780 [ 430.960709][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.960724][ C0] ? text_poke_memcpy+0x25/0x30 [ 430.960740][ C0] ? kmalloc_node_trace_noprof+0x8c/0x300 [ 430.960757][ C0] ? rcu_is_watching+0x15/0xb0 [ 430.960773][ C0] ? kmalloc_node_trace_noprof+0x8c/0x300 [ 430.960789][ C0] trace_hardirqs_on+0x28/0x40 [ 430.960804][ C0] __text_poke+0x9bf/0xd30 [ 430.960820][ C0] ? kmalloc_node_trace_noprof+0x8c/0x300 [ 430.960837][ C0] ? __pfx_text_poke_memcpy+0x10/0x10 [ 430.960853][ C0] ? __pfx___text_poke+0x10/0x10 [ 430.960867][ C0] ? kmem_cache_alloc_bulk_noprof+0x146/0x770 [ 430.960885][ C0] ? perf_event_text_poke+0x258/0x330 [ 430.960904][ C0] ? __pfx_smp_call_function_many_cond+0x10/0x10 [ 430.960923][ C0] ? __pfx_perf_event_text_poke+0x10/0x10 [ 430.960939][ C0] ? __mutex_trylock_common+0x183/0x2e0 [ 430.960959][ C0] ? preempt_schedule_thunk+0x1a/0x30 [ 430.960978][ C0] text_poke_bp_batch+0x8cd/0xb30 [ 430.960998][ C0] ? kmem_cache_alloc_bulk_noprof+0x147/0x770 [ 430.961016][ C0] ? __pfx_text_poke_bp_batch+0x10/0x10 [ 430.961034][ C0] ? arch_jump_label_transform_queue+0x9b/0x100 [ 430.961054][ C0] text_poke_finish+0x30/0x50 [ 430.961069][ C0] arch_jump_label_transform_apply+0x1c/0x30 [ 430.961086][ C0] static_key_disable_cpuslocked+0xce/0x1c0 [ 430.961107][ C0] static_key_disable+0x1a/0x20 [ 430.961126][ C0] toggle_allocation_gate+0x1b8/0x250 [ 430.961141][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 430.961156][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.961175][ C0] ? process_scheduled_works+0x945/0x1830 [ 430.961196][ C0] process_scheduled_works+0xa2c/0x1830 [ 430.961222][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 430.961240][ C0] ? assign_work+0x364/0x3d0 [ 430.961256][ C0] worker_thread+0x86d/0xd50 [ 430.961277][ C0] ? __kthread_parkme+0x169/0x1d0 [ 430.961294][ C0] ? __pfx_worker_thread+0x10/0x10 [ 430.961308][ C0] kthread+0x2f0/0x390 [ 430.961325][ C0] ? __pfx_worker_thread+0x10/0x10 [ 430.961339][ C0] ? __pfx_kthread+0x10/0x10 [ 430.961355][ C0] ret_from_fork+0x4b/0x80 [ 430.961373][ C0] ? __pfx_kthread+0x10/0x10 [ 430.961389][ C0] ret_from_fork_asm+0x1a/0x30 [ 430.961414][ C0] [ 430.961421][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.206 msecs [ 430.962239][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 431.417213][ T30] CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-00017-g5e0497553643 #0 [ 431.426742][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 431.436886][ T30] Call Trace: [ 431.440240][ T30] [ 431.443158][ T30] dump_stack_lvl+0x241/0x360 [ 431.447916][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.453102][ T30] ? __pfx__printk+0x10/0x10 [ 431.457695][ T30] ? vscnprintf+0x5d/0x90 [ 431.462016][ T30] panic+0x349/0x860 [ 431.465923][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.472076][ T30] ? __pfx_panic+0x10/0x10 [ 431.476482][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 431.481939][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.488075][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 431.494219][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 431.500367][ T30] watchdog+0x101d/0x1020 [ 431.504689][ T30] ? watchdog+0x1ea/0x1020 [ 431.509091][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.513756][ T30] kthread+0x2f0/0x390 [ 431.517812][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.522472][ T30] ? __pfx_kthread+0x10/0x10 [ 431.527045][ T30] ret_from_fork+0x4b/0x80 [ 431.531445][ T30] ? __pfx_kthread+0x10/0x10 [ 431.536023][ T30] ret_from_fork_asm+0x1a/0x30 [ 431.540780][ T30] [ 431.543969][ T30] Kernel Offset: disabled [ 431.548293][ T30] Rebooting in 86400 seconds..