./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2422089987 <...> Warning: Permanently added '10.128.0.233' (ED25519) to the list of known hosts. execve("./syz-executor2422089987", ["./syz-executor2422089987"], 0x7ffe2a5b5e20 /* 10 vars */) = 0 brk(NULL) = 0x555566f23000 brk(0x555566f23d00) = 0x555566f23d00 arch_prctl(ARCH_SET_FS, 0x555566f23380) = 0 set_tid_address(0x555566f23650) = 5825 set_robust_list(0x555566f23660, 24) = 0 rseq(0x555566f23ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2422089987", 4096) = 28 getrandom("\xe1\xf3\x82\xbb\x21\x95\x8d\x82", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555566f23d00 brk(0x555566f44d00) = 0x555566f44d00 brk(0x555566f45000) = 0x555566f45000 mprotect(0x7fda5ee55000, 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 5826 attached [pid 5826] set_robust_list(0x555566f23660, 24 [pid 5825] <... clone resumed>, child_tidptr=0x555566f23650) = 5826 [pid 5826] <... set_robust_list resumed>) = 0 [pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5826] setpgid(0, 0) = 0 [pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5826] write(3, "1000", 4) = 4 [pid 5826] close(3) = 0 executing program [pid 5826] write(1, "executing program\n", 18) = 18 [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fda56800000 [pid 5826] 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 5826] munmap(0x7fda56800000, 138412032) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5826] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5826] close(3) = 0 [pid 5826] close(4) = 0 [pid 5826] mkdir("./file1", 0777) = 0 [ 88.251682][ T5826] loop0: detected capacity change from 0 to 32768 [ 88.313386][ T5826] ======================================================= [ 88.313386][ T5826] WARNING: The mand mount option has been deprecated and [ 88.313386][ T5826] and is ignored by this kernel. Remove the mand [ 88.313386][ T5826] option from the mount to silence this warning. [ 88.313386][ T5826] ======================================================= [ 88.363956][ T5826] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 88.386214][ T5826] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,erasure_code,no_splitbrain_check,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc [ 88.386214][ T5826] allowing incompatible features above 0.0: (unknown version) [ 88.386214][ T5826] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 88.429287][ T5826] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 88.437660][ T5826] bcachefs (loop0): Version upgrade required: [ 88.437660][ T5826] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 88.437660][ T5826] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive [ 88.437660][ T5826] running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,check_rebalance_work,set_fs_needs_rebalance [ 88.511807][ T5826] bcachefs (loop0): dropping and reconstructing all alloc info [pid 5826] mount("/dev/loop0", "./file1", "bcachefs", MS_SYNCHRONOUS|MS_MANDLOCK|MS_DIRSYNC|MS_NOATIME|MS_POSIXACL, "fsck,inlineraded,str_hash=siphash,norecovery,discard,reconstruct_alloc,erasure_code,acl,no_splitbrai"...) = 0 [pid 5826] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5826] chdir("./file1") = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 88.533991][ T5826] bcachefs (loop0): accounting_read... done [ 88.540843][ T5826] bcachefs (loop0): alloc_read... done [ 88.546782][ T5826] bcachefs (loop0): snapshots_read... done [ 88.554161][ T5826] bcachefs (loop0): done starting filesystem [pid 5826] ioctl(4, LOOP_CLR_FD) = 0 [pid 5826] close(4) = 0 [pid 5826] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = 4 [ 88.630014][ T5826] ------------[ cut here ]------------ [ 88.635750][ T5826] WARNING: CPU: 0 PID: 5826 at block/bio.c:513 bio_alloc_bioset+0xd45/0x1110 [ 88.644649][ T5826] Modules linked in: [ 88.649011][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor242 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) [ 88.661137][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.671304][ T5826] RIP: 0010:bio_alloc_bioset+0xd45/0x1110 [ 88.677084][ T5826] Code: db f6 ff 81 ce 00 20 09 00 e8 c7 68 80 fd 48 85 c0 0f 84 8b 00 00 00 49 89 c7 e8 b6 07 2a fd e9 65 f8 ff ff e8 ac 07 2a fd 90 <0f> 0b 90 e9 41 fb ff ff e8 9e 07 2a fd 90 0f 0b 90 e9 04 fb ff ff [ 88.696919][ T5826] RSP: 0018:ffffc900042ff278 EFLAGS: 00010293 [ 88.703039][ T5826] RAX: ffffffff84963234 RBX: 0000000000000000 RCX: ffff88807c87da00 [ 88.711018][ T5826] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 88.719022][ T5826] RBP: dffffc0000000000 R08: ffff888074e48908 R09: 1ffffd40003a4d68 [ 88.727029][ T5826] R10: dffffc0000000000 R11: fffff940003a4d69 R12: 0000000000000001 [ 88.735195][ T5826] R13: ffff888074e48908 R14: ffff888074e48a20 R15: 0000000000000100 [ 88.743221][ T5826] FS: 0000555566f23380(0000) GS:ffff888125c95000(0000) knlGS:0000000000000000 [ 88.752211][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.758808][ T5826] CR2: 000020000000a000 CR3: 00000000786f8000 CR4: 00000000003526f0 [ 88.766836][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.774836][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.782858][ T5826] Call Trace: [ 88.786146][ T5826] [ 88.789078][ T5826] ? folio_unlock+0x101/0x160 [ 88.793805][ T5826] __bch2_writepage+0x1581/0x2790 [ 88.798901][ T5826] ? __pfx___bch2_writepage+0x10/0x10 [ 88.804328][ T5826] write_cache_pages+0x64/0x100 [ 88.809208][ T5826] bch2_writepages+0x154/0x360 [ 88.814012][ T5826] ? __pfx_bch2_writepages+0x10/0x10 [ 88.819324][ T5826] ? __lock_acquire+0xab9/0xd20 [ 88.824211][ T5826] ? __pfx_bch2_writepages+0x10/0x10 [ 88.829512][ T5826] do_writepages+0x32b/0x550 [ 88.834149][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 88.839372][ T5826] file_write_and_wait_range+0x22c/0x330 [ 88.845069][ T5826] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 88.851321][ T5826] bch2_fsync+0x127/0x330 [ 88.855663][ T5826] bch2_write_iter+0x2822/0x2b90 [ 88.860613][ T5826] ? __pfx_bch2_write_iter+0x10/0x10 [ 88.865943][ T5826] ? rcu_read_lock_any_held+0xb3/0x120 [ 88.871457][ T5826] vfs_write+0x54b/0xa90 [ 88.875723][ T5826] ? __pfx_bch2_write_iter+0x10/0x10 [ 88.881035][ T5826] ? __pfx_vfs_write+0x10/0x10 [ 88.885886][ T5826] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.891136][ T5826] ? _raw_spin_unlock_irq+0x2e/0x50 [ 88.896441][ T5826] __x64_sys_pwrite64+0x193/0x220 [ 88.901530][ T5826] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 88.907110][ T5826] do_syscall_64+0xfa/0x3b0 [ 88.911684][ T5826] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.916897][ T5826] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.922996][ T5826] ? clear_bhb_loop+0x60/0xb0 [ 88.927680][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.933597][ T5826] RIP: 0033:0x7fda5eddbdd9 [ 88.938033][ T5826] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 88.957666][ T5826] RSP: 002b:00007fff20eeed78 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 88.966136][ T5826] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fda5eddbdd9 [ 88.974297][ T5826] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004 [ 88.982481][ T5826] RBP: 00007fda5ee25095 R08: 0000555566f244c0 R09: 0000555566f244c0 [ 88.990442][ T5826] R10: 0000000000000e7c R11: 0000000000000246 R12: 00007fff20eeeda0 [ 88.998443][ T5826] R13: 00007fff20eeefc8 R14: 431bde82d7b634db R15: 00007fda5ee2503b [ 89.006458][ T5826] [ 89.009474][ T5826] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 89.016747][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor242 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) [ 89.028805][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.038864][ T5826] Call Trace: [ 89.042147][ T5826] [ 89.045081][ T5826] dump_stack_lvl+0x99/0x250 [ 89.049683][ T5826] ? __asan_memcpy+0x40/0x70 [ 89.054300][ T5826] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.059501][ T5826] ? __pfx__printk+0x10/0x10 [ 89.064118][ T5826] panic+0x2db/0x790 [ 89.068023][ T5826] ? __pfx_panic+0x10/0x10 [ 89.072461][ T5826] __warn+0x31b/0x4b0 [ 89.076456][ T5826] ? bio_alloc_bioset+0xd45/0x1110 [ 89.081572][ T5826] ? bio_alloc_bioset+0xd45/0x1110 [ 89.086685][ T5826] report_bug+0x2be/0x4f0 [ 89.091010][ T5826] ? bio_alloc_bioset+0xd45/0x1110 [ 89.096123][ T5826] ? bio_alloc_bioset+0xd45/0x1110 [ 89.101234][ T5826] ? bio_alloc_bioset+0xd47/0x1110 [ 89.106356][ T5826] handle_bug+0x84/0x160 [ 89.110600][ T5826] exc_invalid_op+0x1a/0x50 [ 89.115106][ T5826] asm_exc_invalid_op+0x1a/0x20 [ 89.119954][ T5826] RIP: 0010:bio_alloc_bioset+0xd45/0x1110 [ 89.125673][ T5826] Code: db f6 ff 81 ce 00 20 09 00 e8 c7 68 80 fd 48 85 c0 0f 84 8b 00 00 00 49 89 c7 e8 b6 07 2a fd e9 65 f8 ff ff e8 ac 07 2a fd 90 <0f> 0b 90 e9 41 fb ff ff e8 9e 07 2a fd 90 0f 0b 90 e9 04 fb ff ff [ 89.145289][ T5826] RSP: 0018:ffffc900042ff278 EFLAGS: 00010293 [ 89.151357][ T5826] RAX: ffffffff84963234 RBX: 0000000000000000 RCX: ffff88807c87da00 [ 89.159411][ T5826] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 89.167377][ T5826] RBP: dffffc0000000000 R08: ffff888074e48908 R09: 1ffffd40003a4d68 [ 89.175344][ T5826] R10: dffffc0000000000 R11: fffff940003a4d69 R12: 0000000000000001 [ 89.183309][ T5826] R13: ffff888074e48908 R14: ffff888074e48a20 R15: 0000000000000100 [ 89.191279][ T5826] ? bio_alloc_bioset+0xd44/0x1110 [ 89.196403][ T5826] ? bio_alloc_bioset+0xd44/0x1110 [ 89.201515][ T5826] ? folio_unlock+0x101/0x160 [ 89.206198][ T5826] __bch2_writepage+0x1581/0x2790 [ 89.211266][ T5826] ? __pfx___bch2_writepage+0x10/0x10 [ 89.216644][ T5826] write_cache_pages+0x64/0x100 [ 89.221499][ T5826] bch2_writepages+0x154/0x360 [ 89.226263][ T5826] ? __pfx_bch2_writepages+0x10/0x10 [ 89.231560][ T5826] ? __lock_acquire+0xab9/0xd20 [ 89.236412][ T5826] ? __pfx_bch2_writepages+0x10/0x10 [ 89.241700][ T5826] do_writepages+0x32b/0x550 [ 89.246304][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 89.251513][ T5826] file_write_and_wait_range+0x22c/0x330 [ 89.257157][ T5826] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 89.263361][ T5826] bch2_fsync+0x127/0x330 [ 89.267693][ T5826] bch2_write_iter+0x2822/0x2b90 [ 89.272661][ T5826] ? __pfx_bch2_write_iter+0x10/0x10 [ 89.277950][ T5826] ? rcu_read_lock_any_held+0xb3/0x120 [ 89.283432][ T5826] vfs_write+0x54b/0xa90 [ 89.287681][ T5826] ? __pfx_bch2_write_iter+0x10/0x10 [ 89.292972][ T5826] ? __pfx_vfs_write+0x10/0x10 [ 89.297743][ T5826] ? _raw_spin_unlock_irq+0x23/0x50 [ 89.302949][ T5826] ? _raw_spin_unlock_irq+0x2e/0x50 [ 89.308147][ T5826] __x64_sys_pwrite64+0x193/0x220 [ 89.313171][ T5826] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 89.318726][ T5826] do_syscall_64+0xfa/0x3b0 [ 89.323232][ T5826] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.328435][ T5826] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.334494][ T5826] ? clear_bhb_loop+0x60/0xb0 [ 89.339170][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.345061][ T5826] RIP: 0033:0x7fda5eddbdd9 [ 89.349479][ T5826] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 89.369088][ T5826] RSP: 002b:00007fff20eeed78 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 89.377506][ T5826] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fda5eddbdd9 [ 89.385474][ T5826] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004 [ 89.393439][ T5826] RBP: 00007fda5ee25095 R08: 0000555566f244c0 R09: 0000555566f244c0 [ 89.401422][ T5826] R10: 0000000000000e7c R11: 0000000000000246 R12: 00007fff20eeeda0 [ 89.409394][ T5826] R13: 00007fff20eeefc8 R14: 431bde82d7b634db R15: 00007fda5ee2503b [ 89.417376][ T5826] [ 89.420700][ T5826] Kernel Offset: disabled [ 89.425024][ T5826] Rebooting in 86400 seconds..