./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3458167429 <...> Warning: Permanently added '10.128.0.171' (ED25519) to the list of known hosts. execve("./syz-executor3458167429", ["./syz-executor3458167429"], 0x7ffe4bd6d290 /* 10 vars */) = 0 brk(NULL) = 0x55556741b000 brk(0x55556741bd00) = 0x55556741bd00 arch_prctl(ARCH_SET_FS, 0x55556741b380) = 0 set_tid_address(0x55556741b650) = 5826 set_robust_list(0x55556741b660, 24) = 0 rseq(0x55556741bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3458167429", 4096) = 28 getrandom("\x24\xec\xd7\x08\x74\x76\x25\xef", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556741bd00 brk(0x55556743cd00) = 0x55556743cd00 brk(0x55556743d000) = 0x55556743d000 mprotect(0x7f0a54a1d000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0a4c400000 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(0x7f0a4c400000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 syzkaller login: [ 84.376194][ T5826] loop0: detected capacity change from 0 to 32768 [ 84.418609][ T5826] ======================================================= [ 84.418609][ T5826] WARNING: The mand mount option has been deprecated and [ 84.418609][ T5826] and is ignored by this kernel. Remove the mand [ 84.418609][ T5826] option from the mount to silence this warning. [ 84.418609][ T5826] ======================================================= [ 84.454692][ T5826] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz-executor345 (5826) [ 84.492556][ T5826] BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf [ 84.505845][ T5826] BTRFS info (device loop0): using crc32c (crc32c-x86_64) checksum algorithm [ 84.515516][ T5826] BTRFS info (device loop0): disk space caching is enabled [ 84.524023][ T5826] BTRFS warning (device loop0): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2 [ 84.603505][ T1152] BTRFS warning (device loop0): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0x597786fc level 0 [ 84.623969][ T5826] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI [ 84.636642][ T5826] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 84.645074][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor345 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0 [ 84.656174][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 84.666258][ T5826] RIP: 0010:btrfs_root_node+0x86/0x3b0 [ 84.671746][ T5826] Code: 60 da c7 fd 48 83 c4 08 e8 c7 41 1b 08 89 c3 31 ff 89 c6 e8 0c 85 ec fd 85 db 74 17 e8 d3 3c d2 fd 84 c0 74 1c e8 ba 80 ec fd <43> 80 3c 3c 00 75 4b eb 51 e8 ac 80 ec fd 43 80 3c 3c 00 75 3d eb [ 84.691353][ T5826] RSP: 0018:ffffc90003fff6c0 EFLAGS: 00010293 [ 84.697433][ T5826] RAX: ffffffff83d2ce86 RBX: 0000000000000001 RCX: ffff88807cab1e00 [ 84.705404][ T5826] RDX: 0000000000000000 RSI: ffffffff8c5fb8e0 RDI: ffffffff8c5fb8a0 [ 84.713372][ T5826] RBP: ffffc90003fff8b0 R08: ffffffff83d2ce74 R09: 1ffffffff2858d08 [ 84.721342][ T5826] R10: dffffc0000000000 R11: fffffbfff2858d09 R12: 0000000000000003 [ 84.729324][ T5826] R13: dffffc0000000000 R14: 0000000000000018 R15: dffffc0000000000 [ 84.737293][ T5826] FS: 000055556741b380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 84.746218][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.752797][ T5826] CR2: 0000564b0e4d9700 CR3: 0000000029d66000 CR4: 00000000003526f0 [ 84.760767][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.768755][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.776721][ T5826] Call Trace: [ 84.780023][ T5826] [ 84.782952][ T5826] ? __die_body+0x5f/0xb0 [ 84.787293][ T5826] ? die_addr+0xb0/0xe0 [ 84.791449][ T5826] ? exc_general_protection+0x3dd/0x5d0 [ 84.797019][ T5826] ? asm_exc_general_protection+0x26/0x30 [ 84.802747][ T5826] ? btrfs_root_node+0x74/0x3b0 [ 84.807617][ T5826] ? btrfs_root_node+0x86/0x3b0 [ 84.812469][ T5826] ? btrfs_root_node+0x86/0x3b0 [ 84.817428][ T5826] ? btrfs_root_node+0x40/0x3b0 [ 84.822288][ T5826] btrfs_read_lock_root_node+0x27/0xd0 [ 84.827764][ T5826] btrfs_build_ref_tree+0x112/0x16f0 [ 84.833057][ T5826] ? try_to_wake_up+0x959/0x1470 [ 84.838003][ T5826] ? __pfx_transaction_kthread+0x10/0x10 [ 84.843660][ T5826] ? __pfx_btrfs_read_qgroup_config+0x10/0x10 [ 84.849736][ T5826] ? cpus_share_resources+0x120/0x120 [ 84.855119][ T5826] ? __pfx_btrfs_build_ref_tree+0x10/0x10 [ 84.860843][ T5826] ? btrfs_check_active_zone_reservation+0x95/0x4d0 [ 84.867432][ T5826] ? btrfs_free_zone_cache+0x15e/0x190 [ 84.872893][ T5826] open_ctree+0x202c/0x2ab0 [ 84.877411][ T5826] ? bdi_register_va+0x593/0x770 [ 84.882379][ T5826] ? __pfx_open_ctree+0x10/0x10 [ 84.887254][ T5826] btrfs_get_tree+0x12da/0x1a30 [ 84.892110][ T5826] ? __pfx_btrfs_get_tree+0x10/0x10 [ 84.897311][ T5826] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 84.903142][ T5826] ? rcu_is_watching+0x15/0xb0 [ 84.907914][ T5826] vfs_get_tree+0x90/0x2b0 [ 84.912351][ T5826] fc_mount+0x1b/0xb0 [ 84.916350][ T5826] btrfs_get_tree+0x6b1/0x1a30 [ 84.921119][ T5826] ? generic_parse_monolithic+0x387/0x400 [ 84.926841][ T5826] ? __pfx_btrfs_get_tree+0x10/0x10 [ 84.932038][ T5826] ? rcu_is_watching+0x15/0xb0 [ 84.936813][ T5826] ? cap_capable+0x139/0x450 [ 84.941407][ T5826] ? safesetid_security_capable+0xb2/0x1d0 [ 84.947216][ T5826] vfs_get_tree+0x90/0x2b0 [ 84.951654][ T5826] do_new_mount+0x2be/0xb40 [ 84.956158][ T5826] ? __pfx_do_new_mount+0x10/0x10 [ 84.961276][ T5826] __se_sys_mount+0x2d6/0x3c0 [ 84.965957][ T5826] ? __pfx___se_sys_mount+0x10/0x10 [ 84.971248][ T5826] ? do_syscall_64+0x100/0x230 [ 84.976118][ T5826] ? __x64_sys_mount+0x20/0xc0 [ 84.980885][ T5826] do_syscall_64+0xf3/0x230 [ 84.985392][ T5826] ? clear_bhb_loop+0x35/0x90 [ 84.990071][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.995964][ T5826] RIP: 0033:0x7f0a549a6d7a [ 85.000387][ T5826] 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 [ 85.019994][ T5826] RSP: 002b:00007ffcd46fc678 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 85.028405][ T5826] RAX: ffffffffffffffda RBX: 00007ffcd46fc690 RCX: 00007f0a549a6d7a [ 85.036368][ T5826] RDX: 0000400000005100 RSI: 0000400000000000 RDI: 00007ffcd46fc690 [ 85.044343][ T5826] RBP: 0000400000000000 R08: 00007ffcd46fc6d0 R09: 0000000000005103 [ 85.052310][ T5826] R10: 0000000000004c41 R11: 0000000000000282 R12: 0000400000005100 [ 85.060276][ T5826] R13: 0000000000000004 R14: 0000000000000003 R15: 00007ffcd46fc6d0 [ 85.068249][ T5826] [ 85.071264][ T5826] Modules linked in: [ 85.075529][ T5826] ---[ end trace 0000000000000000 ]--- [ 85.081211][ T5826] RIP: 0010:btrfs_root_node+0x86/0x3b0 [ 85.086716][ T5826] Code: 60 da c7 fd 48 83 c4 08 e8 c7 41 1b 08 89 c3 31 ff 89 c6 e8 0c 85 ec fd 85 db 74 17 e8 d3 3c d2 fd 84 c0 74 1c e8 ba 80 ec fd <43> 80 3c 3c 00 75 4b eb 51 e8 ac 80 ec fd 43 80 3c 3c 00 75 3d eb [ 85.106368][ T5826] RSP: 0018:ffffc90003fff6c0 EFLAGS: 00010293 [ 85.112511][ T5826] RAX: ffffffff83d2ce86 RBX: 0000000000000001 RCX: ffff88807cab1e00 [ 85.120558][ T5826] RDX: 0000000000000000 RSI: ffffffff8c5fb8e0 RDI: ffffffff8c5fb8a0 [ 85.128601][ T5826] RBP: ffffc90003fff8b0 R08: ffffffff83d2ce74 R09: 1ffffffff2858d08 [ 85.136573][ T5826] R10: dffffc0000000000 R11: fffffbfff2858d09 R12: 0000000000000003 [ 85.144594][ T5826] R13: dffffc0000000000 R14: 0000000000000018 R15: dffffc0000000000 [ 85.152646][ T5826] FS: 000055556741b380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 85.161720][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.168322][ T5826] CR2: 0000564b0e4d9700 CR3: 0000000029d66000 CR4: 00000000003526f0 [ 85.176341][ T5826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.184370][ T5826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.192395][ T5826] Kernel panic - not syncing: Fatal exception [ 85.198908][ T5826] Kernel Offset: disabled [ 85.203236][ T5826] Rebooting in 86400 seconds..