./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2022309714 <...> Warning: Permanently added '10.128.10.38' (ED25519) to the list of known hosts. execve("./syz-executor2022309714", ["./syz-executor2022309714"], 0x7ffd8abe6260 /* 10 vars */) = 0 brk(NULL) = 0x55555a8cb000 brk(0x55555a8cbd00) = 0x55555a8cbd00 arch_prctl(ARCH_SET_FS, 0x55555a8cb380) = 0 set_tid_address(0x55555a8cb650) = 5824 set_robust_list(0x55555a8cb660, 24) = 0 rseq(0x55555a8cbca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2022309714", 4096) = 28 getrandom("\x27\x37\xbf\xbb\x73\x4b\xbe\xa1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555a8cbd00 brk(0x55555a8ecd00) = 0x55555a8ecd00 brk(0x55555a8ed000) = 0x55555a8ed000 mprotect(0x7fe94abb0000, 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 5825 attached [pid 5825] set_robust_list(0x55555a8cb660, 24 [pid 5824] <... clone resumed>, child_tidptr=0x55555a8cb650) = 5825 [pid 5825] <... set_robust_list resumed>) = 0 [pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5825] setpgid(0, 0) = 0 [pid 5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1000", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] write(1, "executing program\n", 18executing program ) = 18 [pid 5825] memfd_create("syzkaller", 0) = 3 [pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe942600000 [pid 5825] 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 5825] munmap(0x7fe942600000, 138412032) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5825] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5825] close(3) = 0 [pid 5825] close(4) = 0 [pid 5825] mkdir("./file1", 0777) = 0 [ 87.884423][ T5825] loop0: detected capacity change from 0 to 32768 [ 87.903467][ T5825] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz-executor202 (5825) [ 87.934007][ T5825] BTRFS info (device loop0): first mount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6 [ 87.945093][ T5825] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 87.955667][ T5825] BTRFS info (device loop0): using free-space-tree [ 88.051340][ T1155] BTRFS warning (device loop0): checksum verify failed on logical 5337088 mirror 1 wanted 0x324c5e2d0cac2dc8f61cbfdfc8cd69d9816061b1498b9e1bff7d10a59610160b found 0xf8bb6bdef03b64ff3b11a2a87ba7a2aeacfdb41cc49a87adad5cc1644d216b29 level 0 [ 88.077414][ T53] BTRFS warning (device loop0): checksum verify failed on logical 5341184 mirror 1 wanted 0xc53d3c5bb04ba5dfc01f4c277f0b81815915cb99da5074f609a3f7f617cf284a found 0xd34891a64d32c06b063fbbf3d26e09cb4d5acf5ade8dc51c4cd532bb53f895d0 level 0 [ 88.107666][ T53] BTRFS warning (device loop0): checksum verify failed on logical 5287936 mirror 1 wanted 0x31987782e3a542b4b1826f4a60605b79838e23bf27075900db4b92202c72b2fd found 0xcc73edc8ee24564a8c6ce1ce085684ad2f9862e56f948f195b5cd36555a6be2f level 0 [ 88.132015][ T1155] BTRFS warning (device loop0): checksum verify failed on logical 5292032 mirror 1 wanted 0xcbbb23d5b53a3b4892a5068ee5011732ffcd94742b434497e3f11d7ca86a6d23 found 0x6ab87e71a537053373402d980abd70276b583e303a68e0dd0a46bb41cfc306c8 level 0 [ 88.162307][ T5825] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN PTI [ 88.174229][ T5825] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 88.182638][ T5825] CPU: 0 UID: 0 PID: 5825 Comm: syz-executor202 Not tainted 6.15.0-syzkaller #0 PREEMPT(full) [ 88.192974][ T5825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.203029][ T5825] RIP: 0010:btrfs_root_node+0x7f/0x3b0 [ 88.208505][ T5825] Code: e7 1a e8 fd 48 83 c4 08 e8 ee 7a 99 07 89 c5 31 ff 89 c6 e8 b3 d1 09 fe 85 ed 74 17 e8 0a f5 f0 fd 84 c0 74 1c e8 61 cd 09 fe <42> 80 3c 2b 00 75 4b eb 51 e8 53 cd 09 fe 42 80 3c 2b 00 75 3d eb [ 88.228156][ T5825] RSP: 0018:ffffc9000449f750 EFLAGS: 00010293 [ 88.234273][ T5825] RAX: ffffffff83b6237f RBX: 0000000000000003 RCX: ffff8880783d9e00 [ 88.242270][ T5825] RDX: 0000000000000000 RSI: ffffffff8bc12220 RDI: ffffffff8bc121e0 [ 88.250263][ T5825] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 88.258233][ T5825] R10: 0000000000000000 R11: ffffffff83b6233c R12: ffffffff83b6233c [ 88.266222][ T5825] R13: dffffc0000000000 R14: 0000000000000018 R15: ffff8880327d5420 [ 88.274198][ T5825] FS: 000055555a8cb380(0000) GS:ffff8881260f6000(0000) knlGS:0000000000000000 [ 88.283133][ T5825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.289890][ T5825] CR2: 00005632094765f8 CR3: 000000003242e000 CR4: 00000000003526f0 [ 88.297863][ T5825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.305830][ T5825] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.313806][ T5825] Call Trace: [ 88.317082][ T5825] [ 88.320014][ T5825] btrfs_read_lock_root_node+0x27/0xd0 [ 88.325484][ T5825] btrfs_build_ref_tree+0x112/0x12b0 [ 88.330778][ T5825] ? preempt_schedule+0xae/0xc0 [ 88.335728][ T5825] ? __pfx_preempt_schedule+0x10/0x10 [ 88.341100][ T5825] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 88.347000][ T5825] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.353329][ T5825] ? __pfx_btrfs_read_qgroup_config+0x10/0x10 [ 88.359409][ T5825] ? __pfx_btrfs_build_ref_tree+0x10/0x10 [ 88.365136][ T5825] ? try_to_wake_up+0x81b/0x1290 [ 88.370079][ T5825] open_ctree+0x1d7e/0x2800 [ 88.374579][ T5825] ? bdi_register_va+0x58d/0x740 [ 88.379525][ T5825] ? __pfx_open_ctree+0x10/0x10 [ 88.384375][ T5825] ? __pfx_snprintf+0x10/0x10 [ 88.389059][ T5825] btrfs_fill_super+0x19d/0x2e0 [ 88.393921][ T5825] btrfs_get_tree+0x107c/0x1620 [ 88.398783][ T5825] ? __pfx_btrfs_get_tree+0x10/0x10 [ 88.403983][ T5825] ? rcu_is_watching+0x15/0xb0 [ 88.408766][ T5825] vfs_get_tree+0x92/0x2b0 [ 88.413193][ T5825] fc_mount+0x1c/0xb0 [ 88.417185][ T5825] btrfs_get_tree+0x67d/0x1620 [ 88.421953][ T5825] ? vfs_parse_monolithic_sep+0x2e3/0x310 [ 88.427682][ T5825] ? __pfx_btrfs_get_tree+0x10/0x10 [ 88.432889][ T5825] ? rcu_is_watching+0x15/0xb0 [ 88.437662][ T5825] ? cap_capable+0x11f/0x460 [ 88.442254][ T5825] ? safesetid_security_capable+0xa9/0x1a0 [ 88.448065][ T5825] vfs_get_tree+0x92/0x2b0 [ 88.452495][ T5825] do_new_mount+0x24a/0xa40 [ 88.457035][ T5825] __se_sys_mount+0x317/0x410 [ 88.461714][ T5825] ? __pfx___se_sys_mount+0x10/0x10 [ 88.466916][ T5825] ? __x64_sys_mount+0x20/0xc0 [ 88.471686][ T5825] do_syscall_64+0xf6/0x210 [ 88.476197][ T5825] ? clear_bhb_loop+0x60/0xb0 [ 88.480875][ T5825] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.486768][ T5825] RIP: 0033:0x7fe94ab38faa [ 88.491196][ T5825] 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 [ 88.510817][ T5825] RSP: 002b:00007ffd0daca588 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 88.519248][ T5825] RAX: ffffffffffffffda RBX: 00007ffd0daca5a0 RCX: 00007fe94ab38faa [ 88.527231][ T5825] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 00007ffd0daca5a0 [ 88.535210][ T5825] RBP: 00002000000000c0 R08: 00007ffd0daca5e0 R09: 00000000000055db [ 88.543180][ T5825] R10: 000000000001c005 R11: 0000000000000282 R12: 0000200000000080 [ 88.551167][ T5825] R13: 0000000000000004 R14: 0000000000000003 R15: 00007ffd0daca5e0 [ 88.559161][ T5825] [ 88.562200][ T5825] Modules linked in: [ 88.566443][ T5825] ---[ end trace 0000000000000000 ]--- [ 88.572050][ T5825] RIP: 0010:btrfs_root_node+0x7f/0x3b0 [ 88.577632][ T5825] Code: e7 1a e8 fd 48 83 c4 08 e8 ee 7a 99 07 89 c5 31 ff 89 c6 e8 b3 d1 09 fe 85 ed 74 17 e8 0a f5 f0 fd 84 c0 74 1c e8 61 cd 09 fe <42> 80 3c 2b 00 75 4b eb 51 e8 53 cd 09 fe 42 80 3c 2b 00 75 3d eb [ 88.597329][ T5825] RSP: 0018:ffffc9000449f750 EFLAGS: 00010293 [ 88.606387][ T5825] RAX: ffffffff83b6237f RBX: 0000000000000003 RCX: ffff8880783d9e00 [ 88.614433][ T5825] RDX: 0000000000000000 RSI: ffffffff8bc12220 RDI: ffffffff8bc121e0 [ 88.622509][ T5825] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 88.630517][ T5825] R10: 0000000000000000 R11: ffffffff83b6233c R12: ffffffff83b6233c [ 88.638572][ T5825] R13: dffffc0000000000 R14: 0000000000000018 R15: ffff8880327d5420 [ 88.646730][ T5825] FS: 000055555a8cb380(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000 [ 88.655663][ T5825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.662324][ T5825] CR2: 00007fb4dbd10e9c CR3: 000000003242e000 CR4: 00000000003526f0 [ 88.670329][ T5825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.678558][ T5825] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.686670][ T5825] Kernel panic - not syncing: Fatal exception [ 88.693147][ T5825] Kernel Offset: disabled [ 88.697470][ T5825] Rebooting in 86400 seconds..