./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2011501413 <...> Warning: Permanently added '10.128.1.125' (ED25519) to the list of known hosts. execve("./syz-executor2011501413", ["./syz-executor2011501413"], 0x7ffc00af1050 /* 10 vars */) = 0 brk(NULL) = 0x5555561ba000 brk(0x5555561bad00) = 0x5555561bad00 arch_prctl(ARCH_SET_FS, 0x5555561ba380) = 0 set_tid_address(0x5555561ba650) = 5068 set_robust_list(0x5555561ba660, 24) = 0 rseq(0x5555561baca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2011501413", 4096) = 28 getrandom("\xa2\x48\x9a\xc5\xb0\x73\xc0\x70", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555561bad00 brk(0x5555561dbd00) = 0x5555561dbd00 brk(0x5555561dc000) = 0x5555561dc000 mprotect(0x7fd41f367000, 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) = 0x7fd416ead000 write(3, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536 munmap(0x7fd416ead000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "sysv", MS_NODEV|MS_NOATIME, "") = -1 EINVAL (Invalid argument) [ 53.582094][ T5068] loop0: detected capacity change from 0 to 128 [ 53.592918][ T5068] oldfs: cannot read superblock [ 53.647738][ T5068] ------------[ cut here ]------------ [ 53.653198][ T5068] VFS: brelse: Trying to free free buffer [ 53.659010][ T5068] WARNING: CPU: 0 PID: 5068 at fs/buffer.c:1235 __brelse+0x6d/0xb0 [ 53.666911][ T5068] Modules linked in: [ 53.670789][ T5068] CPU: 0 PID: 5068 Comm: syz-executor201 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0 [ 53.681190][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 53.691234][ T5068] RIP: 0010:__brelse+0x6d/0xb0 [ 53.695989][ T5068] Code: 84 d2 75 52 44 8b 63 60 31 ff 44 89 e6 e8 0b 36 89 ff 45 85 e4 75 20 e8 91 3a 89 ff 90 48 c7 c7 c0 8b dd 8a e8 34 7c 4f ff 90 <0f> 0b 90 90 5b 5d 41 5c e9 76 3a 89 ff e8 71 3a 89 ff be 04 00 00 [ 53.715585][ T5068] RSP: 0018:ffffc900039af8c8 EFLAGS: 00010086 [ 53.721641][ T5068] RAX: 0000000000000000 RBX: ffff888071dc30e8 RCX: ffffffff814db519 [ 53.729602][ T5068] RDX: ffff88801cf75940 RSI: ffffffff814db526 RDI: 0000000000000001 [ 53.737561][ T5068] RBP: ffff888071dc3148 R08: 0000000000000001 R09: 0000000000000000 [ 53.745520][ T5068] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 53.753477][ T5068] R13: ffff888071dc30e8 R14: dffffc0000000000 R15: ffff8880b983d8c0 [ 53.761441][ T5068] FS: 00005555561ba380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 53.770360][ T5068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.776959][ T5068] CR2: 00007ff76d1f1b10 CR3: 00000000711fa000 CR4: 0000000000350ef0 [ 53.784933][ T5068] Call Trace: [ 53.788208][ T5068] [ 53.791128][ T5068] ? show_regs+0x8f/0xa0 [ 53.795371][ T5068] ? __warn+0xe6/0x390 [ 53.799437][ T5068] ? __brelse+0x6d/0xb0 [ 53.803584][ T5068] ? report_bug+0x3bc/0x580 [ 53.808096][ T5068] ? handle_bug+0x3d/0x70 [ 53.812426][ T5068] ? exc_invalid_op+0x17/0x40 [ 53.817097][ T5068] ? asm_exc_invalid_op+0x1a/0x20 [ 53.822117][ T5068] ? __warn_printk+0x199/0x350 [ 53.826874][ T5068] ? __warn_printk+0x1a6/0x350 [ 53.831631][ T5068] ? __brelse+0x6d/0xb0 [ 53.835776][ T5068] ? __brelse+0x6c/0xb0 [ 53.839919][ T5068] invalidate_bh_lru+0xa2/0x190 [ 53.844760][ T5068] ? on_each_cpu_cond_mask+0x40/0x90 [ 53.850038][ T5068] ? __brelse+0xb0/0xb0 [ 53.854181][ T5068] smp_call_function_many_cond+0x1214/0x1550 [ 53.860153][ T5068] ? generic_remap_file_range_prep+0x50/0x50 [ 53.866121][ T5068] ? __brelse+0xb0/0xb0 [ 53.870274][ T5068] ? generic_smp_call_function_single_interrupt+0x20/0x20 [ 53.877379][ T5068] ? irqentry_exit+0x3b/0x80 [ 53.881959][ T5068] ? lockdep_hardirqs_on+0x7d/0x110 [ 53.887149][ T5068] ? __brelse+0xb0/0xb0 [ 53.891294][ T5068] ? generic_remap_file_range_prep+0x50/0x50 [ 53.897263][ T5068] on_each_cpu_cond_mask+0x40/0x90 [ 53.902368][ T5068] invalidate_bdev+0x95/0xd0 [ 53.906958][ T5068] invalidate_disk+0x41/0x110 [ 53.911630][ T5068] __loop_clr_fd+0x259/0x8f0 [ 53.916221][ T5068] lo_ioctl+0x5d8/0x1a50 [ 53.920457][ T5068] ? kasan_quarantine_put+0x102/0x230 [ 53.925820][ T5068] ? loop_configure+0x18b0/0x18b0 [ 53.930838][ T5068] ? tomoyo_path_number_perm+0x28e/0x580 [ 53.936461][ T5068] ? reacquire_held_locks+0x4c0/0x4c0 [ 53.941830][ T5068] ? tomoyo_path_number_perm+0x463/0x580 [ 53.947456][ T5068] ? __kmem_cache_free+0xc0/0x180 [ 53.952480][ T5068] ? tomoyo_path_number_perm+0x190/0x580 [ 53.958104][ T5068] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 53.963903][ T5068] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 53.969792][ T5068] ? do_vfs_ioctl+0x379/0x1920 [ 53.974554][ T5068] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 53.980446][ T5068] ? blkdev_common_ioctl+0x1e0/0x1cd0 [ 53.985813][ T5068] ? blkdev_pr_preempt+0x2f0/0x2f0 [ 53.990920][ T5068] ? ptrace_notify+0xf4/0x130 [ 53.995589][ T5068] ? loop_configure+0x18b0/0x18b0 [ 54.000606][ T5068] blkdev_ioctl+0x2f3/0x760 [ 54.005104][ T5068] ? blkdev_common_ioctl+0x1cd0/0x1cd0 [ 54.010557][ T5068] ? bpf_lsm_file_ioctl+0x9/0x10 [ 54.015485][ T5068] ? blkdev_common_ioctl+0x1cd0/0x1cd0 [ 54.020935][ T5068] __x64_sys_ioctl+0x18f/0x210 [ 54.025698][ T5068] do_syscall_64+0x40/0x110 [ 54.030199][ T5068] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.036083][ T5068] RIP: 0033:0x7fd41f2ea4bb [ 54.040488][ T5068] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 [ 54.060171][ T5068] RSP: 002b:00007ffc39ce91f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.068586][ T5068] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007fd41f2ea4bb [ 54.076551][ T5068] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 [ 54.084512][ T5068] RBP: 0000000000000004 R08: 00007ffc39ce92a0 R09: 0000000000009e47 [ 54.092471][ T5068] R10: 0000000000000404 R11: 0000000000000246 R12: 0000000000000404 [ 54.100435][ T5068] R13: 00007ffc39ce92a0 R14: 0000000000000003 R15: 0000000000010000 [ 54.108406][ T5068] [ 54.111413][ T5068] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 54.118681][ T5068] CPU: 0 PID: 5068 Comm: syz-executor201 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0 [ 54.129080][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 54.139124][ T5068] Call Trace: [ 54.142392][ T5068] [ 54.145309][ T5068] dump_stack_lvl+0xd9/0x1b0 [ 54.149896][ T5068] panic+0x6dc/0x790 [ 54.153786][ T5068] ? panic_smp_self_stop+0xa0/0xa0 [ 54.158890][ T5068] ? show_trace_log_lvl+0x363/0x4f0 [ 54.164087][ T5068] ? check_panic_on_warn+0x1f/0xb0 [ 54.169193][ T5068] ? __brelse+0x6d/0xb0 [ 54.173340][ T5068] check_panic_on_warn+0xab/0xb0 [ 54.178280][ T5068] __warn+0xf2/0x390 [ 54.182167][ T5068] ? __brelse+0x6d/0xb0 [ 54.186399][ T5068] report_bug+0x3bc/0x580 [ 54.190728][ T5068] handle_bug+0x3d/0x70 [ 54.194888][ T5068] exc_invalid_op+0x17/0x40 [ 54.199386][ T5068] asm_exc_invalid_op+0x1a/0x20 [ 54.204228][ T5068] RIP: 0010:__brelse+0x6d/0xb0 [ 54.208995][ T5068] Code: 84 d2 75 52 44 8b 63 60 31 ff 44 89 e6 e8 0b 36 89 ff 45 85 e4 75 20 e8 91 3a 89 ff 90 48 c7 c7 c0 8b dd 8a e8 34 7c 4f ff 90 <0f> 0b 90 90 5b 5d 41 5c e9 76 3a 89 ff e8 71 3a 89 ff be 04 00 00 [ 54.228591][ T5068] RSP: 0018:ffffc900039af8c8 EFLAGS: 00010086 [ 54.234647][ T5068] RAX: 0000000000000000 RBX: ffff888071dc30e8 RCX: ffffffff814db519 [ 54.242606][ T5068] RDX: ffff88801cf75940 RSI: ffffffff814db526 RDI: 0000000000000001 [ 54.250564][ T5068] RBP: ffff888071dc3148 R08: 0000000000000001 R09: 0000000000000000 [ 54.258521][ T5068] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 54.266476][ T5068] R13: ffff888071dc30e8 R14: dffffc0000000000 R15: ffff8880b983d8c0 [ 54.274439][ T5068] ? __warn_printk+0x199/0x350 [ 54.279200][ T5068] ? __warn_printk+0x1a6/0x350 [ 54.283962][ T5068] ? __brelse+0x6c/0xb0 [ 54.288105][ T5068] invalidate_bh_lru+0xa2/0x190 [ 54.292948][ T5068] ? on_each_cpu_cond_mask+0x40/0x90 [ 54.298307][ T5068] ? __brelse+0xb0/0xb0 [ 54.302448][ T5068] smp_call_function_many_cond+0x1214/0x1550 [ 54.308421][ T5068] ? generic_remap_file_range_prep+0x50/0x50 [ 54.314389][ T5068] ? __brelse+0xb0/0xb0 [ 54.318533][ T5068] ? generic_smp_call_function_single_interrupt+0x20/0x20 [ 54.325634][ T5068] ? irqentry_exit+0x3b/0x80 [ 54.330214][ T5068] ? lockdep_hardirqs_on+0x7d/0x110 [ 54.335404][ T5068] ? __brelse+0xb0/0xb0 [ 54.339545][ T5068] ? generic_remap_file_range_prep+0x50/0x50 [ 54.345512][ T5068] on_each_cpu_cond_mask+0x40/0x90 [ 54.350615][ T5068] invalidate_bdev+0x95/0xd0 [ 54.355203][ T5068] invalidate_disk+0x41/0x110 [ 54.359873][ T5068] __loop_clr_fd+0x259/0x8f0 [ 54.364457][ T5068] lo_ioctl+0x5d8/0x1a50 [ 54.368692][ T5068] ? kasan_quarantine_put+0x102/0x230 [ 54.374055][ T5068] ? loop_configure+0x18b0/0x18b0 [ 54.379073][ T5068] ? tomoyo_path_number_perm+0x28e/0x580 [ 54.384697][ T5068] ? reacquire_held_locks+0x4c0/0x4c0 [ 54.390064][ T5068] ? tomoyo_path_number_perm+0x463/0x580 [ 54.395686][ T5068] ? __kmem_cache_free+0xc0/0x180 [ 54.400708][ T5068] ? tomoyo_path_number_perm+0x190/0x580 [ 54.406334][ T5068] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 54.412164][ T5068] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 54.418055][ T5068] ? do_vfs_ioctl+0x379/0x1920 [ 54.422817][ T5068] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 54.428701][ T5068] ? blkdev_common_ioctl+0x1e0/0x1cd0 [ 54.434064][ T5068] ? blkdev_pr_preempt+0x2f0/0x2f0 [ 54.439170][ T5068] ? ptrace_notify+0xf4/0x130 [ 54.443839][ T5068] ? loop_configure+0x18b0/0x18b0 [ 54.448855][ T5068] blkdev_ioctl+0x2f3/0x760 [ 54.453353][ T5068] ? blkdev_common_ioctl+0x1cd0/0x1cd0 [ 54.458806][ T5068] ? bpf_lsm_file_ioctl+0x9/0x10 [ 54.463734][ T5068] ? blkdev_common_ioctl+0x1cd0/0x1cd0 [ 54.469188][ T5068] __x64_sys_ioctl+0x18f/0x210 [ 54.473950][ T5068] do_syscall_64+0x40/0x110 [ 54.478448][ T5068] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 54.484329][ T5068] RIP: 0033:0x7fd41f2ea4bb [ 54.488731][ T5068] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 [ 54.508325][ T5068] RSP: 002b:00007ffc39ce91f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.516726][ T5068] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007fd41f2ea4bb [ 54.524684][ T5068] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 [ 54.532644][ T5068] RBP: 0000000000000004 R08: 00007ffc39ce92a0 R09: 0000000000009e47 [ 54.540602][ T5068] R10: 0000000000000404 R11: 0000000000000246 R12: 0000000000000404 [ 54.548562][ T5068] R13: 00007ffc39ce92a0 R14: 0000000000000003 R15: 0000000000010000 [ 54.556528][ T5068] [ 54.559766][ T5068] Kernel Offset: disabled [ 54.564121][ T5068] Rebooting in 86400 seconds..