./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2491239377 <...> Warning: Permanently added '10.128.0.230' (ED25519) to the list of known hosts. execve("./syz-executor2491239377", ["./syz-executor2491239377"], 0x7ffe19122950 /* 10 vars */) = 0 brk(NULL) = 0x55558ef29000 brk(0x55558ef29d00) = 0x55558ef29d00 arch_prctl(ARCH_SET_FS, 0x55558ef29380) = 0 set_tid_address(0x55558ef29650) = 5838 set_robust_list(0x55558ef29660, 24) = 0 rseq(0x55558ef29ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2491239377", 4096) = 28 getrandom("\xab\x5c\x56\xf2\x38\xe5\x68\x42", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558ef29d00 brk(0x55558ef4ad00) = 0x55558ef4ad00 brk(0x55558ef4b000) = 0x55558ef4b000 mprotect(0x7fbc8af7a000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5839 attached , child_tidptr=0x55558ef29650) = 5839 [pid 5839] set_robust_list(0x55558ef29660, 24) = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] getppid() = 0 [pid 5839] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5839] unshare(CLONE_NEWNS) = 0 [pid 5839] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5839] unshare(CLONE_NEWIPC) = 0 [pid 5839] unshare(CLONE_NEWCGROUP) = 0 [pid 5839] unshare(CLONE_NEWUTS) = 0 [pid 5839] unshare(CLONE_SYSVSEM) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "16777216", 8) = 8 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "536870912", 9) = 9 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "8192", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5839] close(3) = 0 [pid 5839] getpid() = 1 [pid 5839] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< u64s 7 type inline_data 536870912:8:U32_MAX len 8 ver 0, fixing [ 77.269449][ T40] bcachefs (loop0): btree_node_read_work: rewriting btree node at btree=extents level=0 SPOS_MAX due to error [ 77.281880][ T5839] done [ 77.284680][ T5839] bcachefs (loop0): accounting_read... done [ 77.292108][ T5839] bcachefs (loop0): alloc_read... done [ 77.297691][ T5839] bcachefs (loop0): stripes_read... done [ 77.303437][ T5839] bcachefs (loop0): snapshots_read... done [pid 5839] mount("/dev/loop0", "./file0", "bcachefs", MS_I_VERSION, "errors=continue,compression=gzip,version_upgrade=incompatible,degraded,very_degraded,norecovery,jour"...) = 0 [pid 5839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5839] chdir("./file0") = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_CLR_FD) = 0 [ 77.309641][ T5839] bcachefs (loop0): check_allocations... done [ 77.331113][ T5839] bcachefs (loop0): going read-write [ 77.340592][ T67] ------------[ cut here ]------------ [ 77.346296][ T67] kernel BUG at fs/bcachefs/alloc_foreground.c:493! [ 77.347546][ T5839] bcachefs (loop0): done starting filesystem [ 77.353391][ T67] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 77.365915][ T67] CPU: 1 UID: 0 PID: 67 Comm: kworker/u8:4 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0 [pid 5839] close(4) = 0 [pid 5839] exit_group(1) = ? [ 77.376348][ T67] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 77.386590][ T67] Workqueue: btree_node_rewrite async_btree_node_rewrite_work [ 77.394131][ T67] RIP: 0010:bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.400595][ T67] Code: e8 f9 aa ef fd e9 f0 c7 ff ff 89 d9 80 e1 07 38 c1 0f 8c f3 fd ff ff 48 89 df e8 8f a9 ef fd e9 e6 fd ff ff e8 b5 b7 88 fd 90 <0f> 0b e8 ad b7 88 fd 90 0f 0b e8 85 60 b6 07 f3 0f 1e fa e8 9c b7 [ 77.420341][ T67] RSP: 0018:ffffc900015e6140 EFLAGS: 00010293 [ 77.426448][ T67] RAX: ffffffff840c40cb RBX: 0000000000000019 RCX: ffff88801cb75a00 [ 77.434433][ T67] RDX: 0000000000000000 RSI: 0000000000000019 RDI: 0000000000000000 [ 77.442420][ T67] RBP: ffffc900015e6868 R08: ffffffff840c1399 R09: 0000000000000000 [ 77.450389][ T67] R10: ffffc900015e6728 R11: fffff520002bccea R12: dffffc0000000000 [ 77.458375][ T67] R13: ffff888079048000 R14: 0000000000000000 R15: 0000000000000000 [ 77.466346][ T67] FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 77.475273][ T67] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.481868][ T67] CR2: 00005611cfe163e0 CR3: 00000000331f4000 CR4: 00000000003526f0 [ 77.489894][ T67] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.497878][ T67] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.506113][ T67] Call Trace: [ 77.509405][ T67] [ 77.512334][ T67] ? __die_body+0x5f/0xb0 [ 77.516680][ T67] ? die+0x9e/0xc0 [ 77.520412][ T67] ? do_trap+0x15a/0x3a0 [ 77.524672][ T67] ? bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.530501][ T67] ? do_error_trap+0x1dc/0x2c0 [ 77.535280][ T67] ? bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.541098][ T67] ? __pfx_do_error_trap+0x10/0x10 [ 77.546222][ T67] ? report_bug+0x3e8/0x500 [ 77.550746][ T67] ? handle_invalid_op+0x34/0x40 [ 77.555706][ T67] ? bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.561515][ T67] ? exc_invalid_op+0x38/0x50 [ 77.566194][ T67] ? asm_exc_invalid_op+0x1a/0x20 [ 77.571250][ T67] ? bch2_bucket_alloc_trans+0xcb9/0x3a50 [ 77.576971][ T67] ? bch2_bucket_alloc_trans+0x39eb/0x3a50 [ 77.582783][ T67] ? bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.588635][ T67] ? __pfx_bch2_bucket_alloc_trans+0x10/0x10 [ 77.594621][ T67] ? __pfx_validate_chain+0x10/0x10 [ 77.599819][ T67] ? validate_chain+0x11e/0x5920 [ 77.604757][ T67] ? mark_lock+0x9a/0x360 [ 77.609090][ T67] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 77.615416][ T67] ? mark_lock+0x9a/0x360 [ 77.619744][ T67] ? __lock_acquire+0x1397/0x2100 [ 77.624774][ T67] ? __pfx_lock_acquire+0x10/0x10 [ 77.629797][ T67] ? bch2_bucket_alloc_set_trans+0x26f/0xd30 [ 77.635800][ T67] ? unwind_next_frame+0x18e6/0x22d0 [ 77.641105][ T67] bch2_bucket_alloc_set_trans+0x517/0xd30 [ 77.646974][ T67] ? bch2_bucket_alloc_set_trans+0x26f/0xd30 [ 77.652964][ T67] ? __pfx_bch2_bucket_alloc_set_trans+0x10/0x10 [ 77.659314][ T67] ? unwind_next_frame+0x18e6/0x22d0 [ 77.664613][ T67] ? deref_stack_reg+0x17c/0x210 [ 77.669557][ T67] ? __asan_memset+0x23/0x50 [ 77.674157][ T67] ? unwind_next_frame+0x193b/0x22d0 [ 77.679463][ T67] ? mark_lock+0x9a/0x360 [ 77.683797][ T67] ? __lock_acquire+0x1397/0x2100 [ 77.688835][ T67] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 77.695001][ T67] __open_bucket_add_buckets+0x13d0/0x1ec0 [ 77.700838][ T67] ? __pfx_stack_trace_save+0x10/0x10 [ 77.706322][ T67] ? __pfx___open_bucket_add_buckets+0x10/0x10 [ 77.712505][ T67] ? mark_lock+0x2ae/0x360 [ 77.717008][ T67] ? __lock_acquire+0x1397/0x2100 [ 77.722080][ T67] ? bch2_btree_path_verify_locks+0x633/0x720 [ 77.728162][ T67] ? __bch2_trans_relock+0x44a/0x5f0 [ 77.733452][ T67] open_bucket_add_buckets+0x33a/0x410 [ 77.738919][ T67] bch2_alloc_sectors_start_trans+0xce9/0x2030 [ 77.745087][ T67] ? __pfx_lock_release+0x10/0x10 [ 77.750112][ T67] ? trace_contention_end+0x3c/0x120 [ 77.755403][ T67] ? __pfx_bch2_alloc_sectors_start_trans+0x10/0x10 [ 77.761997][ T67] ? __mutex_unlock_slowpath+0x21e/0x790 [ 77.767658][ T67] ? __pfx___mutex_lock+0x10/0x10 [ 77.772692][ T67] bch2_btree_reserve_get+0x612/0x1890 [ 77.778169][ T67] ? __pfx_bch2_btree_reserve_get+0x10/0x10 [ 77.784064][ T67] ? rcuwait_wake_up+0x1e5/0x230 [ 77.789000][ T67] ? percpu_up_read+0xdc/0x1b0 [ 77.793773][ T67] ? __pfx___bch2_disk_reservation_add+0x10/0x10 [ 77.800106][ T67] ? bch2_btree_update_start+0x682/0x14e0 [ 77.805835][ T67] bch2_btree_update_start+0xe56/0x14e0 [ 77.811394][ T67] ? bch2_btree_node_rewrite+0x1c0/0x1280 [ 77.817129][ T67] ? __pfx_bch2_btree_update_start+0x10/0x10 [ 77.823120][ T67] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.829028][ T67] ? __pfx_bch2_path_get+0x10/0x10 [ 77.834149][ T67] ? bch2_trans_begin+0x9c5/0x1c00 [ 77.839284][ T67] bch2_btree_node_rewrite+0x1c0/0x1280 [ 77.844873][ T67] ? __pfx_bch2_btree_node_rewrite+0x10/0x10 [ 77.850892][ T67] async_btree_node_rewrite_work+0x31e/0xda0 [ 77.856883][ T67] ? __pfx_async_btree_node_rewrite_work+0x10/0x10 [ 77.863390][ T67] ? async_btree_node_rewrite_work+0x232/0xda0 [ 77.869545][ T67] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 77.875879][ T67] ? process_scheduled_works+0x976/0x1850 [ 77.881637][ T67] process_scheduled_works+0xa63/0x1850 [ 77.887247][ T67] ? __pfx_process_scheduled_works+0x10/0x10 [ 77.893269][ T67] ? assign_work+0x364/0x3d0 [ 77.897873][ T67] worker_thread+0x870/0xd30 [ 77.902475][ T67] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.908371][ T67] ? __kthread_parkme+0x169/0x1d0 [ 77.913420][ T67] ? __pfx_worker_thread+0x10/0x10 [ 77.918625][ T67] kthread+0x2f0/0x390 [ 77.922712][ T67] ? __pfx_worker_thread+0x10/0x10 [ 77.927831][ T67] ? __pfx_kthread+0x10/0x10 [ 77.932422][ T67] ret_from_fork+0x4b/0x80 [ 77.936856][ T67] ? __pfx_kthread+0x10/0x10 [ 77.941457][ T67] ret_from_fork_asm+0x1a/0x30 [ 77.946237][ T67] [ 77.949248][ T67] Modules linked in: [ 77.953320][ T67] ---[ end trace 0000000000000000 ]--- [ 77.958883][ T67] RIP: 0010:bch2_bucket_alloc_trans+0x39ec/0x3a50 [ 77.960759][ T5839] bcachefs (loop0): shutting down [ 77.965370][ T67] Code: e8 f9 aa ef fd e9 f0 c7 ff ff 89 d9 80 e1 07 38 c1 0f 8c f3 fd ff ff 48 89 df e8 8f a9 ef fd e9 e6 fd ff ff e8 b5 b7 88 fd 90 <0f> 0b e8 ad b7 88 fd 90 0f 0b e8 85 60 b6 07 f3 0f 1e fa e8 9c b7 [ 77.965392][ T67] RSP: 0018:ffffc900015e6140 EFLAGS: 00010293 [ 77.965415][ T67] RAX: ffffffff840c40cb RBX: 0000000000000019 RCX: ffff88801cb75a00 [ 77.965432][ T67] RDX: 0000000000000000 RSI: 0000000000000019 RDI: 0000000000000000 [ 77.994101][ T5839] bcachefs (loop0): going read-only [ 77.996496][ T67] RBP: ffffc900015e6868 R08: ffffffff840c1399 R09: 0000000000000000 [ 78.025627][ T67] R10: ffffc900015e6728 R11: fffff520002bccea R12: dffffc0000000000 [ 78.033690][ T67] R13: ffff888079048000 R14: 0000000000000000 R15: 0000000000000000 [ 78.041750][ T67] FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 78.050726][ T67] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.057416][ T67] CR2: 00005611cfe163e0 CR3: 00000000331f4000 CR4: 00000000003526f0 [ 78.065479][ T67] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.073521][ T67] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.081515][ T67] Kernel panic - not syncing: Fatal exception [ 78.087909][ T67] Kernel Offset: disabled [ 78.092248][ T67] Rebooting in 86400 seconds..