./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3318180177 <...> Warning: Permanently added '10.128.1.181' (ED25519) to the list of known hosts. execve("./syz-executor3318180177", ["./syz-executor3318180177"], 0x7ffddd1374f0 /* 10 vars */) = 0 brk(NULL) = 0x55558ce71000 brk(0x55558ce71d00) = 0x55558ce71d00 arch_prctl(ARCH_SET_FS, 0x55558ce71380) = 0 set_tid_address(0x55558ce71650) = 5822 set_robust_list(0x55558ce71660, 24) = 0 rseq(0x55558ce71ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3318180177", 4096) = 28 getrandom("\xa9\x05\x2c\xf8\x56\x45\xa6\xb2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558ce71d00 brk(0x55558ce92d00) = 0x55558ce92d00 brk(0x55558ce93000) = 0x55558ce93000 mprotect(0x7f0c36dcf000, 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 5823 attached [pid 5823] set_robust_list(0x55558ce71660, 24) = 0 [pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5822] <... clone resumed>, child_tidptr=0x55558ce71650) = 5823 [pid 5823] <... prctl resumed>) = 0 [pid 5823] setpgid(0, 0) = 0 [pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5823] write(3, "1000", 4) = 4 [pid 5823] close(3) = 0 [pid 5823] write(1, "executing program\n", 18executing program ) = 18 [pid 5823] memfd_create("syzkaller", 0) = 3 [pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0c2e800000 [pid 5823] 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 5823] munmap(0x7f0c2e800000, 138412032) = 0 [pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5823] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5823] close(3) = 0 [pid 5823] close(4) = 0 [pid 5823] mkdir("./file1", 0777) = 0 [ 90.640436][ T5823] loop0: detected capacity change from 0 to 32768 [ 90.673617][ T5823] ======================================================= [ 90.673617][ T5823] WARNING: The mand mount option has been deprecated and [ 90.673617][ T5823] and is ignored by this kernel. Remove the mand [ 90.673617][ T5823] option from the mount to silence this warning. [ 90.673617][ T5823] ======================================================= [ 90.727881][ T5823] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 90.754301][ T5823] 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 [ 90.754301][ T5823] allowing incompatible features above 0.0: (unknown version) [ 90.754301][ T5823] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 90.797276][ T5823] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 90.805724][ T5823] bcachefs (loop0): Version upgrade required: [ 90.805724][ T5823] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 90.805724][ T5823] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive [ 90.805724][ T5823] 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 [ 90.880213][ T5823] bcachefs (loop0): dropping and reconstructing all alloc info [pid 5823] 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 5823] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5823] chdir("./file1") = 0 [ 90.907715][ T5823] bcachefs (loop0): accounting_read... done [ 90.914943][ T5823] bcachefs (loop0): alloc_read... done [ 90.920787][ T5823] bcachefs (loop0): snapshots_read... done [ 90.927834][ T5823] bcachefs (loop0): done starting filesystem [pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5823] ioctl(4, LOOP_CLR_FD) = 0 [pid 5823] close(4) = 0 [pid 5823] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = 4 [ 91.027829][ T5823] ------------[ cut here ]------------ [ 91.033451][ T5823] WARNING: CPU: 1 PID: 5823 at block/bio.c:513 bio_alloc_bioset+0xd45/0x1110 [ 91.042737][ T5823] Modules linked in: [ 91.046854][ T5823] CPU: 1 UID: 0 PID: 5823 Comm: syz-executor331 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) [ 91.059010][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.069106][ T5823] RIP: 0010:bio_alloc_bioset+0xd45/0x1110 [ 91.074893][ T5823] 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 [ 91.094597][ T5823] RSP: 0018:ffffc9000446f278 EFLAGS: 00010293 [ 91.100692][ T5823] RAX: ffffffff84963234 RBX: 0000000000000000 RCX: ffff888032c31e00 [ 91.108757][ T5823] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 91.116809][ T5823] RBP: dffffc0000000000 R08: ffff88805dc48908 R09: 1ffffd40002f3ed8 [ 91.124874][ T5823] R10: dffffc0000000000 R11: fffff940002f3ed9 R12: 0000000000000001 [ 91.132873][ T5823] R13: ffff88805dc48908 R14: ffff88805dc48a20 R15: 0000000000000100 [ 91.140940][ T5823] FS: 000055558ce71380(0000) GS:ffff888125d95000(0000) knlGS:0000000000000000 [ 91.149919][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.156573][ T5823] CR2: 000020000000a000 CR3: 0000000077e2a000 CR4: 00000000003526f0 [ 91.164615][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.172616][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.180654][ T5823] Call Trace: [ 91.183955][ T5823] [ 91.186934][ T5823] ? folio_unlock+0x101/0x160 [ 91.191648][ T5823] __bch2_writepage+0x1581/0x2790 [ 91.196796][ T5823] ? __pfx___bch2_writepage+0x10/0x10 [ 91.202198][ T5823] write_cache_pages+0x64/0x100 [ 91.207137][ T5823] bch2_writepages+0x154/0x360 [ 91.211924][ T5823] ? __pfx_bch2_writepages+0x10/0x10 [ 91.217294][ T5823] ? __lock_acquire+0xab9/0xd20 [ 91.222174][ T5823] ? __pfx_bch2_writepages+0x10/0x10 [ 91.227512][ T5823] do_writepages+0x32b/0x550 [ 91.232137][ T5823] ? do_raw_spin_unlock+0x122/0x240 [ 91.237425][ T5823] file_write_and_wait_range+0x22c/0x330 [ 91.243103][ T5823] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 91.249421][ T5823] bch2_fsync+0x127/0x330 [ 91.253809][ T5823] bch2_write_iter+0x2822/0x2b90 [ 91.258918][ T5823] ? __pfx_bch2_write_iter+0x10/0x10 [ 91.264276][ T5823] ? rcu_read_lock_any_held+0xb3/0x120 [ 91.269788][ T5823] vfs_write+0x54b/0xa90 [ 91.274126][ T5823] ? __pfx_bch2_write_iter+0x10/0x10 [ 91.279444][ T5823] ? __pfx_vfs_write+0x10/0x10 [ 91.284273][ T5823] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.289510][ T5823] ? _raw_spin_unlock_irq+0x2e/0x50 [ 91.294797][ T5823] __x64_sys_pwrite64+0x193/0x220 [ 91.299857][ T5823] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 91.305459][ T5823] do_syscall_64+0xfa/0x3b0 [ 91.310012][ T5823] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.315293][ T5823] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.321380][ T5823] ? clear_bhb_loop+0x60/0xb0 [ 91.326109][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.332025][ T5823] RIP: 0033:0x7f0c36d55dd9 [ 91.336529][ T5823] 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 [ 91.356223][ T5823] RSP: 002b:00007ffcd9f815e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 91.364682][ T5823] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f0c36d55dd9 [ 91.372671][ T5823] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004 [ 91.380711][ T5823] RBP: 00007f0c36d9f095 R08: 000055558ce724c0 R09: 000055558ce724c0 [ 91.388721][ T5823] R10: 0000000000000e7c R11: 0000000000000246 R12: 00007ffcd9f81610 [ 91.396761][ T5823] R13: 00007ffcd9f81838 R14: 431bde82d7b634db R15: 00007f0c36d9f03b [ 91.404818][ T5823] [ 91.407868][ T5823] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 91.415160][ T5823] CPU: 1 UID: 0 PID: 5823 Comm: syz-executor331 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) [ 91.427222][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.437292][ T5823] Call Trace: [ 91.440583][ T5823] [ 91.443513][ T5823] dump_stack_lvl+0x99/0x250 [ 91.448116][ T5823] ? __asan_memcpy+0x40/0x70 [ 91.452719][ T5823] ? __pfx_dump_stack_lvl+0x10/0x10 [ 91.457927][ T5823] ? __pfx__printk+0x10/0x10 [ 91.462526][ T5823] panic+0x2db/0x790 [ 91.466435][ T5823] ? __pfx_panic+0x10/0x10 [ 91.470881][ T5823] __warn+0x31b/0x4b0 [ 91.474875][ T5823] ? bio_alloc_bioset+0xd45/0x1110 [ 91.479994][ T5823] ? bio_alloc_bioset+0xd45/0x1110 [ 91.485111][ T5823] report_bug+0x2be/0x4f0 [ 91.489443][ T5823] ? bio_alloc_bioset+0xd45/0x1110 [ 91.494558][ T5823] ? bio_alloc_bioset+0xd45/0x1110 [ 91.499691][ T5823] ? bio_alloc_bioset+0xd47/0x1110 [ 91.504809][ T5823] handle_bug+0x84/0x160 [ 91.509066][ T5823] exc_invalid_op+0x1a/0x50 [ 91.513581][ T5823] asm_exc_invalid_op+0x1a/0x20 [ 91.518443][ T5823] RIP: 0010:bio_alloc_bioset+0xd45/0x1110 [ 91.524163][ T5823] 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 [ 91.543767][ T5823] RSP: 0018:ffffc9000446f278 EFLAGS: 00010293 [ 91.549842][ T5823] RAX: ffffffff84963234 RBX: 0000000000000000 RCX: ffff888032c31e00 [ 91.557821][ T5823] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 [ 91.565792][ T5823] RBP: dffffc0000000000 R08: ffff88805dc48908 R09: 1ffffd40002f3ed8 [ 91.573781][ T5823] R10: dffffc0000000000 R11: fffff940002f3ed9 R12: 0000000000000001 [ 91.581755][ T5823] R13: ffff88805dc48908 R14: ffff88805dc48a20 R15: 0000000000000100 [ 91.589738][ T5823] ? bio_alloc_bioset+0xd44/0x1110 [ 91.594863][ T5823] ? bio_alloc_bioset+0xd44/0x1110 [ 91.599984][ T5823] ? folio_unlock+0x101/0x160 [ 91.604671][ T5823] __bch2_writepage+0x1581/0x2790 [ 91.609735][ T5823] ? __pfx___bch2_writepage+0x10/0x10 [ 91.615113][ T5823] write_cache_pages+0x64/0x100 [ 91.619975][ T5823] bch2_writepages+0x154/0x360 [ 91.624744][ T5823] ? __pfx_bch2_writepages+0x10/0x10 [ 91.630059][ T5823] ? __lock_acquire+0xab9/0xd20 [ 91.634918][ T5823] ? __pfx_bch2_writepages+0x10/0x10 [ 91.640209][ T5823] do_writepages+0x32b/0x550 [ 91.644821][ T5823] ? do_raw_spin_unlock+0x122/0x240 [ 91.650031][ T5823] file_write_and_wait_range+0x22c/0x330 [ 91.655674][ T5823] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 91.661878][ T5823] bch2_fsync+0x127/0x330 [ 91.666209][ T5823] bch2_write_iter+0x2822/0x2b90 [ 91.671172][ T5823] ? __pfx_bch2_write_iter+0x10/0x10 [ 91.676459][ T5823] ? rcu_read_lock_any_held+0xb3/0x120 [ 91.681931][ T5823] vfs_write+0x54b/0xa90 [ 91.686177][ T5823] ? __pfx_bch2_write_iter+0x10/0x10 [ 91.691463][ T5823] ? __pfx_vfs_write+0x10/0x10 [ 91.696226][ T5823] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.701427][ T5823] ? _raw_spin_unlock_irq+0x2e/0x50 [ 91.706631][ T5823] __x64_sys_pwrite64+0x193/0x220 [ 91.711658][ T5823] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 91.717210][ T5823] do_syscall_64+0xfa/0x3b0 [ 91.721715][ T5823] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.726915][ T5823] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.732982][ T5823] ? clear_bhb_loop+0x60/0xb0 [ 91.737665][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.743559][ T5823] RIP: 0033:0x7f0c36d55dd9 [ 91.747987][ T5823] 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 [ 91.767590][ T5823] RSP: 002b:00007ffcd9f815e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 91.776013][ T5823] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f0c36d55dd9 [ 91.783983][ T5823] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004 [ 91.791981][ T5823] RBP: 00007f0c36d9f095 R08: 000055558ce724c0 R09: 000055558ce724c0 [ 91.799964][ T5823] R10: 0000000000000e7c R11: 0000000000000246 R12: 00007ffcd9f81610 [ 91.807963][ T5823] R13: 00007ffcd9f81838 R14: 431bde82d7b634db R15: 00007f0c36d9f03b [ 91.815961][ T5823] [ 91.819298][ T5823] Kernel Offset: disabled [ 91.823629][ T5823] Rebooting in 86400 seconds..