./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor646603929 <...> Warning: Permanently added '10.128.1.95' (ED25519) to the list of known hosts. execve("./syz-executor646603929", ["./syz-executor646603929"], 0x7fffd8cc6890 /* 10 vars */) = 0 brk(NULL) = 0x555581f1b000 brk(0x555581f1bd00) = 0x555581f1bd00 arch_prctl(ARCH_SET_FS, 0x555581f1b380) = 0 set_tid_address(0x555581f1b650) = 5826 set_robust_list(0x555581f1b660, 24) = 0 rseq(0x555581f1bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor646603929", 4096) = 27 getrandom("\x8f\x40\x87\xbe\xcc\x2a\xae\xd9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581f1bd00 brk(0x555581f3cd00) = 0x555581f3cd00 brk(0x555581f3d000) = 0x555581f3d000 mprotect(0x7f9f098d4000, 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, 0executing program ) = 0x200001000000 write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9f01400000 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(0x7f9f01400000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "jfs", MS_NOSUID|MS_NOEXEC|MS_SYNCHRONOUS|MS_REC|MS_STRICTATIME|MS_LAZYTIME, "uid=0x0000000000000000,usrquota,integrity,iocharset=iso8859-3,iocharset=iso8859-1,errors=remount-ro,"...) = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 89.988260][ T5826] loop0: detected capacity change from 0 to 32768 [ 90.045208][ T5826] BUG at fs/jfs/jfs_dmap.c:3024 assert(bitno < 32) [ 90.053672][ T5826] ------------[ cut here ]------------ [ 90.059516][ T5826] kernel BUG at fs/jfs/jfs_dmap.c:3024! [ 90.065130][ T5826] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 90.071570][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor646 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full) [ 90.082229][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 90.092711][ T5826] RIP: 0010:dbFindBits+0x19e/0x1a0 [ 90.097836][ T5826] Code: ee fd 90 0f 0b e8 52 3d 86 fe 48 c7 c7 40 62 a3 8b 48 c7 c6 80 5f a3 8b ba d0 0b 00 00 48 c7 c1 20 6a a3 8b e8 83 0f ee fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 [ 90.117448][ T5826] RSP: 0018:ffffc90003a1f190 EFLAGS: 00010246 [ 90.123518][ T5826] RAX: 0000000000000030 RBX: 0000000000000000 RCX: d3029ac105996b00 [ 90.131480][ T5826] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 90.139436][ T5826] RBP: 00000000ffffffff R08: ffffc90003a1ee67 R09: 1ffff92000743dcc [ 90.147395][ T5826] R10: dffffc0000000000 R11: fffff52000743dcd R12: 0000000000000001 [ 90.155354][ T5826] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 [ 90.163311][ T5826] FS: 0000555581f1b380(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 [ 90.172235][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.178814][ T5826] CR2: 000000000066c7e0 CR3: 000000007ad98000 CR4: 0000000000350ef0 [ 90.186782][ T5826] Call Trace: [ 90.190058][ T5826] [ 90.193019][ T5826] dbAllocDmapLev+0x16b/0x3c0 [ 90.197713][ T5826] dbAllocCtl+0x14a/0x9b0 [ 90.202038][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.207678][ T5826] dbAllocAG+0x1e8/0xf10 [ 90.211934][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.217570][ T5826] ? down_write_nested+0x169/0x200 [ 90.222687][ T5826] dbAlloc+0x5a8/0xba0 [ 90.226769][ T5826] dtInsert+0xad5/0x5f40 [ 90.231014][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.236650][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.242286][ T5826] ? txLockAlloc+0x239/0x380 [ 90.246901][ T5826] ? __pfx_txLockAlloc+0x10/0x10 [ 90.251843][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.257472][ T5826] ? do_raw_spin_unlock+0x122/0x240 [ 90.262673][ T5826] ? __pfx_dtInsert+0x10/0x10 [ 90.267359][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.273001][ T5826] ? txLock+0xfe0/0x1cb0 [ 90.277251][ T5826] ? __pfx_txLock+0x10/0x10 [ 90.281936][ T5826] jfs_create+0x6c8/0xa80 [ 90.286268][ T5826] ? __pfx_jfs_create+0x10/0x10 [ 90.291113][ T5826] ? __pfx_jfs_lookup+0x10/0x10 [ 90.295968][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.301598][ T5826] ? generic_permission+0x2e5/0x690 [ 90.306799][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.312445][ T5826] ? inode_permission+0xf8/0x490 [ 90.317383][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.323011][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.328641][ T5826] ? __pfx_jfs_create+0x10/0x10 [ 90.333488][ T5826] path_openat+0x14f4/0x3830 [ 90.338091][ T5826] ? arch_stack_walk+0xfc/0x150 [ 90.342981][ T5826] ? __pfx_path_openat+0x10/0x10 [ 90.347910][ T5826] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.353978][ T5826] do_filp_open+0x1fa/0x410 [ 90.358477][ T5826] ? __pfx_do_filp_open+0x10/0x10 [ 90.363502][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 90.368368][ T5826] ? srso_alias_return_thunk+0x5/0xfbef5 [ 90.373999][ T5826] ? alloc_fd+0x64c/0x6c0 [ 90.378339][ T5826] do_sys_openat2+0x121/0x1c0 [ 90.383023][ T5826] ? __pfx_do_sys_openat2+0x10/0x10 [ 90.388228][ T5826] ? rcu_is_watching+0x15/0xb0 [ 90.392998][ T5826] __x64_sys_openat+0x138/0x170 [ 90.397857][ T5826] do_syscall_64+0xf6/0x210 [ 90.402360][ T5826] ? asm_common_interrupt+0x26/0x40 [ 90.407588][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.413477][ T5826] RIP: 0033:0x7f9f0985b9f9 [ 90.417885][ T5826] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 90.437489][ T5826] RSP: 002b:00007ffe18f0f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 90.445904][ T5826] RAX: ffffffffffffffda RBX: 0000200000000180 RCX: 00007f9f0985b9f9 [ 90.453871][ T5826] RDX: 000000000000275a RSI: 0000200000000080 RDI: 00000000ffffff9c [ 90.461868][ T5826] RBP: 00007f9f098a405e R08: 0000000000000000 R09: 0000000000000000 [ 90.469832][ T5826] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 90.477794][ T5826] R13: 00007ffe18f0f208 R14: 0000000000000001 R15: 0000000000000001 [ 90.485770][ T5826] [ 90.488783][ T5826] Modules linked in: [ 90.492804][ T5826] ---[ end trace 0000000000000000 ]--- [ 90.498349][ T5826] RIP: 0010:dbFindBits+0x19e/0x1a0 [ 90.503582][ T5826] Code: ee fd 90 0f 0b e8 52 3d 86 fe 48 c7 c7 40 62 a3 8b 48 c7 c6 80 5f a3 8b ba d0 0b 00 00 48 c7 c1 20 6a a3 8b e8 83 0f ee fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 [ 90.523654][ T5826] RSP: 0018:ffffc90003a1f190 EFLAGS: 00010246 [ 90.529738][ T5826] RAX: 0000000000000030 RBX: 0000000000000000 RCX: d3029ac105996b00 [ 90.538228][ T5826] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 90.546256][ T5826] RBP: 00000000ffffffff R08: ffffc90003a1ee67 R09: 1ffff92000743dcc [ 90.554263][ T5826] R10: dffffc0000000000 R11: fffff52000743dcd R12: 0000000000000001 [ 90.562267][ T5826] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 [ 90.570267][ T5826] FS: 0000555581f1b380(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 [ 90.579224][ T5826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.585866][ T5826] CR2: 000000000066c7e0 CR3: 000000007ad98000 CR4: 0000000000350ef0 [ 90.593897][ T5826] Kernel panic - not syncing: Fatal exception [ 90.600193][ T5826] Kernel Offset: disabled [ 90.604540][ T5826] Rebooting in 86400 seconds..