./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3721793428 <...> Warning: Permanently added '10.128.1.149' (ED25519) to the list of known hosts. execve("./syz-executor3721793428", ["./syz-executor3721793428"], 0x7ffc62cb3070 /* 10 vars */) = 0 brk(NULL) = 0x555571535000 brk(0x555571535d00) = 0x555571535d00 arch_prctl(ARCH_SET_FS, 0x555571535380) = 0 set_tid_address(0x555571535650) = 5095 set_robust_list(0x555571535660, 24) = 0 rseq(0x555571535ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3721793428", 4096) = 28 getrandom("\x24\xe0\x55\xb7\xfd\x2f\xea\x12", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555571535d00 brk(0x555571556d00) = 0x555571556d00 brk(0x555571557000) = 0x555571557000 mprotect(0x7f754d342000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7544e00000 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 munmap(0x7f7544e00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 75.904943][ T5095] loop0: detected capacity change from 0 to 32768 [ 75.995745][ T5095] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=crc64,data_checksum=none,nojournal_transaction_names [ 76.009860][ T5095] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 76.030501][ T5095] ------------[ cut here ]------------ [ 76.036292][ T5095] kernel BUG at fs/bcachefs/backpointers.h:75! [ 76.042452][ T5095] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 76.049387][ T5095] CPU: 0 PID: 5095 Comm: syz-executor372 Not tainted 6.9.0-rc6-next-20240503-syzkaller #0 [ 76.059272][ T5095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 76.069322][ T5095] RIP: 0010:bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.075667][ T5095] Code: fc ff ff e8 f6 19 8d fd 48 c7 c7 40 7f 91 8e 48 89 de e8 87 e9 e2 00 e9 fc f7 ff ff e8 dd 19 8d fd 90 0f 0b e8 d5 19 8d fd 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 53 e8 [ 76.095268][ T5095] RSP: 0018:ffffc9000344e600 EFLAGS: 00010293 [ 76.101330][ T5095] RAX: ffffffff8408fc0b RBX: 00000000002d3cb6 RCX: ffff88807db18000 [ 76.109386][ T5095] RDX: 0000000000000000 RSI: 00000000002d3cb6 RDI: 000000000000001b [ 76.117362][ T5095] RBP: 000000b4f2d90000 R08: ffffffff8408f5aa R09: 1ffffffff25f54b0 [ 76.125360][ T5095] R10: dffffc0000000000 R11: fffffbfff25f54b1 R12: 1ffff92000689d58 [ 76.133333][ T5095] R13: ffffc9000344eaa0 R14: ffff8880747000bb R15: 000000000000001b [ 76.141304][ T5095] FS: 0000555571535380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 76.150238][ T5095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.156832][ T5095] CR2: 0000561aa32c7360 CR3: 0000000077a0a000 CR4: 00000000003506f0 [ 76.164819][ T5095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.172793][ T5095] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.180768][ T5095] Call Trace: [ 76.184054][ T5095] [ 76.186989][ T5095] ? __die_body+0x88/0xe0 [ 76.191335][ T5095] ? die+0xcf/0x110 [ 76.195184][ T5095] ? do_trap+0x15a/0x3a0 [ 76.199437][ T5095] ? bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.205166][ T5095] ? do_error_trap+0x1dc/0x2c0 [ 76.209939][ T5095] ? bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.215665][ T5095] ? __pfx_do_error_trap+0x10/0x10 [ 76.220784][ T5095] ? handle_invalid_op+0x34/0x40 [ 76.225727][ T5095] ? bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.231456][ T5095] ? exc_invalid_op+0x38/0x50 [ 76.236156][ T5095] ? asm_exc_invalid_op+0x1a/0x20 [ 76.241282][ T5095] ? bch2_backpointer_invalid+0x36a/0x9d0 [ 76.247009][ T5095] ? bch2_backpointer_invalid+0x9cb/0x9d0 [ 76.252736][ T5095] ? bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.258478][ T5095] ? bch2_backpointer_invalid+0x82/0x9d0 [ 76.264126][ T5095] ? bch2_bkey_val_invalid+0xe5/0x1c0 [ 76.269520][ T5095] bch2_btree_node_read_done+0x3e7d/0x5ed0 [ 76.275360][ T5095] ? __pfx_bch2_btree_node_read_done+0x10/0x10 [ 76.281525][ T5095] ? __asan_memcpy+0x40/0x70 [ 76.286140][ T5095] ? __pfx_bch2_bkey_pick_read_device+0x10/0x10 [ 76.292470][ T5095] ? bch2_btree_ptr_v2_to_text+0x209/0x2f0 [ 76.298294][ T5095] btree_node_read_work+0x665/0x1300 [ 76.303621][ T5095] ? __pfx_btree_node_read_work+0x10/0x10 [ 76.309354][ T5095] ? print_irqtrace_events+0x1e0/0x220 [ 76.314817][ T5095] ? lockdep_hardirqs_on+0x99/0x150 [ 76.320027][ T5095] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 76.325926][ T5095] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 76.332259][ T5095] ? mean_and_variance_weighted_get_mean+0x73/0xc0 [ 76.338786][ T5095] ? __bch2_time_stats_update+0x2c6/0x370 [ 76.344529][ T5095] bch2_btree_node_read+0x2637/0x2c80 [ 76.349924][ T5095] ? __mutex_unlock_slowpath+0x21d/0x750 [ 76.355568][ T5095] ? __pfx_bch2_btree_node_read+0x10/0x10 [ 76.361307][ T5095] ? __pfx___bch2_btree_node_hash_insert+0x10/0x10 [ 76.367818][ T5095] ? bch2_btree_node_mem_alloc+0x967/0x1210 [ 76.373719][ T5095] ? bch2_btree_node_hash_insert+0x18b/0x1d0 [ 76.379707][ T5095] bch2_btree_root_read+0x61e/0x970 [ 76.384925][ T5095] ? __pfx_bch2_btree_root_read+0x10/0x10 [ 76.390668][ T5095] ? bch2_journal_log_msg+0xda/0x120 [ 76.395976][ T5095] read_btree_roots+0x22d/0x7b0 [ 76.400845][ T5095] bch2_fs_recovery+0x2334/0x36e0 [ 76.405879][ T5095] ? mark_lock+0x9a/0x350 [ 76.410222][ T5095] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 76.415613][ T5095] ? __pfx_lock_acquire+0x10/0x10 [ 76.420641][ T5095] ? bch2_get_next_online_dev+0x48/0x4b0 [ 76.426283][ T5095] ? __pfx_lock_release+0x10/0x10 [ 76.431316][ T5095] ? bch2_get_next_online_dev+0x48/0x4b0 [ 76.436962][ T5095] ? bch2_get_next_online_dev+0x47f/0x4b0 [ 76.442714][ T5095] ? bch2_get_next_online_dev+0x48/0x4b0 [ 76.448373][ T5095] ? llist_reverse_order+0x72/0x90 [ 76.453498][ T5095] bch2_fs_start+0x356/0x5b0 [ 76.458108][ T5095] bch2_fs_open+0xa8d/0xdf0 [ 76.462624][ T5095] ? __pfx_bch2_fs_open+0x10/0x10 [ 76.467680][ T5095] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 76.474022][ T5095] ? __pfx_bch2_test_super+0x10/0x10 [ 76.479324][ T5095] ? sget+0x2b8/0x620 [ 76.483322][ T5095] ? __pfx_bch2_noset_super+0x10/0x10 [ 76.488708][ T5095] bch2_mount+0x71d/0x1320 [ 76.493144][ T5095] ? __pfx_bch2_mount+0x10/0x10 [ 76.498015][ T5095] ? aa_get_newest_label+0xff/0x6f0 [ 76.503225][ T5095] ? vfs_parse_fs_string+0x190/0x230 [ 76.508514][ T5095] ? kfree+0x4e/0x360 [ 76.512508][ T5095] ? vfs_parse_fs_string+0x190/0x230 [ 76.517804][ T5095] legacy_get_tree+0xee/0x190 [ 76.522503][ T5095] ? __pfx_bch2_mount+0x10/0x10 [ 76.527358][ T5095] vfs_get_tree+0x90/0x2a0 [ 76.531782][ T5095] do_new_mount+0x2be/0xb40 [ 76.536292][ T5095] ? ns_capable+0x8a/0xf0 [ 76.540626][ T5095] ? __pfx_do_new_mount+0x10/0x10 [ 76.545660][ T5095] __se_sys_mount+0x2d9/0x3c0 [ 76.550365][ T5095] ? __pfx___se_sys_mount+0x10/0x10 [ 76.555567][ T5095] ? do_syscall_64+0x102/0x240 [ 76.560360][ T5095] ? __x64_sys_mount+0x20/0xc0 [ 76.565148][ T5095] do_syscall_64+0xf5/0x240 [ 76.569701][ T5095] ? clear_bhb_loop+0x35/0x90 [ 76.574406][ T5095] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.580323][ T5095] RIP: 0033:0x7f754d2be98a [ 76.584743][ T5095] 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 [ 76.604384][ T5095] RSP: 002b:00007fffdfc823d8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 76.612901][ T5095] RAX: ffffffffffffffda RBX: 00007fffdfc823f0 RCX: 00007f754d2be98a [ 76.620967][ T5095] RDX: 0000000020011a00 RSI: 0000000020011a40 RDI: 00007fffdfc823f0 [ 76.628963][ T5095] RBP: 0000000000000004 R08: 00007fffdfc82430 R09: 00000000000119f7 [ 76.636935][ T5095] R10: 0000000002000000 R11: 0000000000000282 R12: 0000000002000000 [ 76.644907][ T5095] R13: 00007fffdfc82430 R14: 0000000000000003 R15: 0000000001000000 [ 76.652892][ T5095] [ 76.655914][ T5095] Modules linked in: [ 76.660013][ T5095] ---[ end trace 0000000000000000 ]--- [ 76.665563][ T5095] RIP: 0010:bch2_backpointer_invalid+0x9cc/0x9d0 [ 76.672119][ T5095] Code: fc ff ff e8 f6 19 8d fd 48 c7 c7 40 7f 91 8e 48 89 de e8 87 e9 e2 00 e9 fc f7 ff ff e8 dd 19 8d fd 90 0f 0b e8 d5 19 8d fd 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 53 e8 [ 76.691784][ T5095] RSP: 0018:ffffc9000344e600 EFLAGS: 00010293 [ 76.697899][ T5095] RAX: ffffffff8408fc0b RBX: 00000000002d3cb6 RCX: ffff88807db18000 [ 76.705955][ T5095] RDX: 0000000000000000 RSI: 00000000002d3cb6 RDI: 000000000000001b [ 76.713934][ T5095] RBP: 000000b4f2d90000 R08: ffffffff8408f5aa R09: 1ffffffff25f54b0 [ 76.721949][ T5095] R10: dffffc0000000000 R11: fffffbfff25f54b1 R12: 1ffff92000689d58 [ 76.730000][ T5095] R13: ffffc9000344eaa0 R14: ffff8880747000bb R15: 000000000000001b [ 76.738120][ T5095] FS: 0000555571535380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 76.747142][ T5095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.753778][ T5095] CR2: 0000561aa3246638 CR3: 0000000077a0a000 CR4: 00000000003506f0 [ 76.761944][ T5095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.770045][ T5095] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.778094][ T5095] Kernel panic - not syncing: Fatal exception [ 76.784364][ T5095] Kernel Offset: disabled [ 76.788691][ T5095] Rebooting in 86400 seconds..