./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3238028197
<...>
[ 92.008436][ T918] cfg80211: failed to load regulatory.db
Warning: Permanently added '10.128.1.84' (ED25519) to the list of known hosts.
execve("./syz-executor3238028197", ["./syz-executor3238028197"], 0x7fff171194f0 /* 10 vars */) = 0
brk(NULL) = 0x555562547000
brk(0x555562547d00) = 0x555562547d00
arch_prctl(ARCH_SET_FS, 0x555562547380) = 0
set_tid_address(0x555562547650) = 5829
set_robust_list(0x555562547660, 24) = 0
rseq(0x555562547ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3238028197", 4096) = 28
getrandom("\xbf\xfb\x8f\xb8\x47\x56\xf2\x9c", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555562547d00
brk(0x555562568d00) = 0x555562568d00
brk(0x555562569000) = 0x555562569000
mprotect(0x7f3aa1bb2000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
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 5830 attached
, child_tidptr=0x555562547650) = 5830
[pid 5830] set_robust_list(0x555562547660, 24) = 0
[pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5830] setpgid(0, 0) = 0
[pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5830] write(3, "1000", 4) = 4
[pid 5830] close(3) = 0
[pid 5830] write(1, "executing program\n", 18executing program
) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3a99600000
[pid 5830] 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 5830] munmap(0x7f3a99600000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5830] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5830] close(3) = 0
[pid 5830] close(4) = 0
[pid 5830] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0
[ 94.074224][ T5830] loop0: detected capacity change from 0 to 32768
[ 94.182249][ T5830] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,fsck,fix_errors=ask,norecovery,recovery_pass_last=reconstruct_snapshots,nojournal_transaction_names,reconstruct_alloc
[ 94.205566][ T5830] bcachefs (loop0): recovering from clean shutdown, journal seq 10
[ 94.213679][ T5830] bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.25: extent_flags
[ 94.213679][ T5830] running recovery passes: check_allocations,check_extents_to_backpointers,check_inodes
[ 94.235017][ T5830] bcachefs (loop0): invalid btree id 251 (max 63), fix?
[ 94.242979][ T5830] bcachefs (loop0): dropping and reconstructing all alloc info
[ 94.254127][ T5830] bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0)
[ 94.265790][ T5830] bcachefs (loop0): bcachefs (loop0): error validating btree node on loop0 at btree xattrs level 0/0
[ 94.265811][ T5830] u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0
[ 94.265824][ T5830] node offset 0/16 bset u64s 0: incorrect max key U64_MAX:18374686479671623680:50331647, btree topology error:
[ 94.302583][ T5830] bcachefs (loop0): flagging btree xattrs lost data
[ 94.309292][ T5830] bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), currently at recovery_pass_empty (0)
[ 94.322210][ T5830] bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0)
[ 94.335290][ T5830] bcachefs (loop0): error reading btree root btree=xattrs level=0: btree_node_read_error, fixing
[ 94.349211][ T5830] ------------[ cut here ]------------
[ 94.354726][ T5830] UBSAN: shift-out-of-bounds in fs/bcachefs/btree_cache.c:218:18
[ 94.362570][ T5830] shift exponent 251 is too large for 64-bit type 'unsigned long long'
[ 94.370966][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor323 Not tainted 6.15.0-rc1-syzkaller-00246-g900241a5cc15 #0 PREEMPT(full)
[ 94.370988][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 94.370999][ T5830] Call Trace:
[ 94.371008][ T5830]
[ 94.371016][ T5830] dump_stack_lvl+0x241/0x360
[ 94.371074][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10
[ 94.371100][ T5830] ? __pfx__printk+0x10/0x10
[ 94.371140][ T5830] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420
[ 94.371198][ T5830] __bch2_btree_node_hash_insert+0x1b32/0x1ba0
[ 94.371239][ T5830] ? __bch2_btree_node_hash_insert+0x20f/0x1ba0
[ 94.371269][ T5830] ? __pfx___bch2_btree_node_hash_insert+0x10/0x10
[ 94.371311][ T5830] bch2_btree_node_hash_insert+0x7e/0xc0
[ 94.371341][ T5830] bch2_btree_root_read+0x605/0x7e0
[ 94.371371][ T5830] ? __pfx_bch2_btree_root_read+0x10/0x10
[ 94.371409][ T5830] ? bch2_current_has_btree_trans+0x142/0x180
[ 94.371429][ T5830] read_btree_roots+0x3d7/0xa80
[ 94.371477][ T5830] ? __pfx_read_btree_roots+0x10/0x10
[ 94.371497][ T5830] ? bch2_reconstruct_alloc+0x336/0x5d0
[ 94.371534][ T5830] bch2_fs_recovery+0x28e4/0x3e20
[ 94.371571][ T5830] ? __pfx_bch2_fs_recovery+0x10/0x10
[ 94.371606][ T5830] ? __lock_acquire+0xad5/0xd80
[ 94.371635][ T5830] ? __lock_acquire+0xad5/0xd80
[ 94.371669][ T5830] ? bch2_fs_start+0x279/0x620
[ 94.371694][ T5830] ? up_write+0x1ab/0x590
[ 94.371714][ T5830] ? bch2_get_next_online_dev+0x4ab/0x4e0
[ 94.371730][ T5830] ? bch2_get_next_online_dev+0x2e/0x4e0
[ 94.371747][ T5830] ? __pfx_up_write+0x10/0x10
[ 94.371769][ T5830] ? llist_reverse_order+0x72/0x90
[ 94.371790][ T5830] bch2_fs_start+0x310/0x620
[ 94.371818][ T5830] bch2_fs_get_tree+0x113e/0x18f0
[ 94.371865][ T5830] ? __pfx_bch2_fs_get_tree+0x10/0x10
[ 94.371880][ T5830] ? smack_fs_context_parse_param+0x10e/0x180
[ 94.371921][ T5830] ? vfs_parse_monolithic_sep+0x427/0x460
[ 94.371943][ T5830] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 94.371964][ T5830] ? rcu_is_watching+0x15/0xb0
[ 94.371983][ T5830] ? cap_capable+0x139/0x450
[ 94.372004][ T5830] ? safesetid_security_capable+0xb2/0x1d0
[ 94.372032][ T5830] vfs_get_tree+0x90/0x2b0
[ 94.372058][ T5830] do_new_mount+0x2cf/0xb70
[ 94.372080][ T5830] ? __pfx_do_new_mount+0x10/0x10
[ 94.372107][ T5830] __se_sys_mount+0x38c/0x400
[ 94.372130][ T5830] ? __pfx___se_sys_mount+0x10/0x10
[ 94.372154][ T5830] ? __x64_sys_mount+0x20/0xc0
[ 94.372173][ T5830] do_syscall_64+0xf3/0x230
[ 94.372198][ T5830] ? clear_bhb_loop+0x45/0xa0
[ 94.372217][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.372232][ T5830] RIP: 0033:0x7f3aa1b3afaa
[ 94.372247][ T5830] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 94.372259][ T5830] RSP: 002b:00007ffe042c3768 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[ 94.372277][ T5830] RAX: ffffffffffffffda RBX: 00007ffe042c3780 RCX: 00007f3aa1b3afaa
[ 94.372288][ T5830] RDX: 0000200000000180 RSI: 0000200000000540 RDI: 00007ffe042c3780
[ 94.372298][ T5830] RBP: 0000200000000540 R08: 00007ffe042c37c0 R09: 0000000000005964
[ 94.372308][ T5830] R10: 0000000000800000 R11: 0000000000000282 R12: 0000200000000180
[ 94.372318][ T5830] R13: 00007ffe042c37c0 R14: 0000000000000003 R15: 0000000000800000
[ 94.372343][ T5830]
[ 94.372353][ T5830] ---[ end trace ]---
[ 94.702838][ T5830] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 94.710052][ T5830] CPU: 1 UID: 0 PID: 5830 Comm: syz-executor323 Not tainted 6.15.0-rc1-syzkaller-00246-g900241a5cc15 #0 PREEMPT(full)
[ 94.722455][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 94.732505][ T5830] Call Trace:
[ 94.735888][ T5830]
[ 94.738898][ T5830] dump_stack_lvl+0x241/0x360
[ 94.743574][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10
[ 94.748765][ T5830] ? __pfx__printk+0x10/0x10
[ 94.753352][ T5830] ? vscnprintf+0x5d/0x90
[ 94.757670][ T5830] panic+0x349/0x880
[ 94.761564][ T5830] ? check_panic_on_warn+0x21/0xb0
[ 94.766851][ T5830] ? __pfx_panic+0x10/0x10
[ 94.771262][ T5830] ? _printk+0xd5/0x120
[ 94.775445][ T5830] ? __pfx__printk+0x10/0x10
[ 94.780050][ T5830] check_panic_on_warn+0x86/0xb0
[ 94.784984][ T5830] __ubsan_handle_shift_out_of_bounds+0x3e7/0x420
[ 94.791420][ T5830] __bch2_btree_node_hash_insert+0x1b32/0x1ba0
[ 94.797572][ T5830] ? __bch2_btree_node_hash_insert+0x20f/0x1ba0
[ 94.803805][ T5830] ? __pfx___bch2_btree_node_hash_insert+0x10/0x10
[ 94.810308][ T5830] bch2_btree_node_hash_insert+0x7e/0xc0
[ 94.815937][ T5830] bch2_btree_root_read+0x605/0x7e0
[ 94.821130][ T5830] ? __pfx_bch2_btree_root_read+0x10/0x10
[ 94.826847][ T5830] ? bch2_current_has_btree_trans+0x142/0x180
[ 94.832905][ T5830] read_btree_roots+0x3d7/0xa80
[ 94.837758][ T5830] ? __pfx_read_btree_roots+0x10/0x10
[ 94.843119][ T5830] ? bch2_reconstruct_alloc+0x336/0x5d0
[ 94.848668][ T5830] bch2_fs_recovery+0x28e4/0x3e20
[ 94.853707][ T5830] ? __pfx_bch2_fs_recovery+0x10/0x10
[ 94.859080][ T5830] ? __lock_acquire+0xad5/0xd80
[ 94.863925][ T5830] ? __lock_acquire+0xad5/0xd80
[ 94.868777][ T5830] ? bch2_fs_start+0x279/0x620
[ 94.873535][ T5830] ? up_write+0x1ab/0x590
[ 94.877872][ T5830] ? bch2_get_next_online_dev+0x4ab/0x4e0
[ 94.883582][ T5830] ? bch2_get_next_online_dev+0x2e/0x4e0
[ 94.889204][ T5830] ? __pfx_up_write+0x10/0x10
[ 94.893875][ T5830] ? llist_reverse_order+0x72/0x90
[ 94.898977][ T5830] bch2_fs_start+0x310/0x620
[ 94.903561][ T5830] bch2_fs_get_tree+0x113e/0x18f0
[ 94.908594][ T5830] ? __pfx_bch2_fs_get_tree+0x10/0x10
[ 94.913994][ T5830] ? smack_fs_context_parse_param+0x10e/0x180
[ 94.920102][ T5830] ? vfs_parse_monolithic_sep+0x427/0x460
[ 94.925833][ T5830] ? __pfx_vfs_parse_comma_sep+0x10/0x10
[ 94.931469][ T5830] ? rcu_is_watching+0x15/0xb0
[ 94.936231][ T5830] ? cap_capable+0x139/0x450
[ 94.940820][ T5830] ? safesetid_security_capable+0xb2/0x1d0
[ 94.946628][ T5830] vfs_get_tree+0x90/0x2b0
[ 94.951047][ T5830] do_new_mount+0x2cf/0xb70
[ 94.955549][ T5830] ? __pfx_do_new_mount+0x10/0x10
[ 94.960601][ T5830] __se_sys_mount+0x38c/0x400
[ 94.965307][ T5830] ? __pfx___se_sys_mount+0x10/0x10
[ 94.970508][ T5830] ? __x64_sys_mount+0x20/0xc0
[ 94.975286][ T5830] do_syscall_64+0xf3/0x230
[ 94.979915][ T5830] ? clear_bhb_loop+0x45/0xa0
[ 94.984628][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.990571][ T5830] RIP: 0033:0x7f3aa1b3afaa
[ 94.995008][ T5830] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 95.014660][ T5830] RSP: 002b:00007ffe042c3768 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[ 95.023168][ T5830] RAX: ffffffffffffffda RBX: 00007ffe042c3780 RCX: 00007f3aa1b3afaa
[ 95.031143][ T5830] RDX: 0000200000000180 RSI: 0000200000000540 RDI: 00007ffe042c3780
[ 95.039196][ T5830] RBP: 0000200000000540 R08: 00007ffe042c37c0 R09: 0000000000005964
[ 95.047182][ T5830] R10: 0000000000800000 R11: 0000000000000282 R12: 0000200000000180
[ 95.055331][ T5830] R13: 00007ffe042c37c0 R14: 0000000000000003 R15: 0000000000800000
[ 95.063320][ T5830]
[ 95.066694][ T5830] Kernel Offset: disabled
[ 95.071051][ T5830] Rebooting in 86400 seconds..