./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor466100323 <...> Warning: Permanently added '10.128.0.95' (ED25519) to the list of known hosts. execve("./syz-executor466100323", ["./syz-executor466100323"], 0x7ffcb96627a0 /* 10 vars */) = 0 brk(NULL) = 0x555575641000 brk(0x555575641d00) = 0x555575641d00 arch_prctl(ARCH_SET_FS, 0x555575641380) = 0 set_tid_address(0x555575641650) = 5820 set_robust_list(0x555575641660, 24) = 0 rseq(0x555575641ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor466100323", 4096) = 27 getrandom("\x09\xa2\x46\x8c\x22\xab\x8b\x3a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555575641d00 brk(0x555575662d00) = 0x555575662d00 brk(0x555575663000) = 0x555575663000 mprotect(0x7f2c4fc8a000, 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 executing program 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) = 0x7f2c47600000 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(0x7f2c47600000, 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, "") = 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) [ 86.482804][ T5820] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, ".", O_RDONLY) = 4 [ 86.545470][ T5820] BUG at fs/jfs/jfs_dmap.c:3009 assert(nb <= DBWORD) [ 86.552581][ T5820] ------------[ cut here ]------------ [ 86.558298][ T5820] kernel BUG at fs/jfs/jfs_dmap.c:3009! [ 86.563952][ T5820] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 86.570221][ T5820] CPU: 1 UID: 0 PID: 5820 Comm: syz-executor466 Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) [ 86.582642][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 86.592702][ T5820] RIP: 0010:dbFindBits+0x177/0x1a0 [ 86.597847][ T5820] Code: e9 20 ff ff ff e8 79 44 88 fe 48 c7 c7 80 50 a3 8b 48 c7 c6 c0 4d a3 8b ba c1 0b 00 00 48 c7 c1 40 58 a3 8b e8 da 11 f0 fd 90 <0f> 0b e8 52 44 88 fe 48 c7 c7 80 50 a3 8b 48 c7 c6 c0 4d a3 8b ba [ 86.617477][ T5820] RSP: 0018:ffffc900040afac8 EFLAGS: 00010246 [ 86.623553][ T5820] RAX: 0000000000000032 RBX: 000000000000000a RCX: 820067d5201a6600 [ 86.631525][ T5820] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 86.639493][ T5820] RBP: 00000000ffffffff R08: ffffc900040af7a7 R09: 1ffff92000815ef4 [ 86.647552][ T5820] R10: dffffc0000000000 R11: fffff52000815ef5 R12: 0000000000000000 [ 86.655524][ T5820] R13: 000000000000000a R14: 0000000000000400 R15: ffff888142f3b000 [ 86.663586][ T5820] FS: 0000555575641380(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 [ 86.672516][ T5820] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.679107][ T5820] CR2: 000055991f3f05b0 CR3: 0000000079934000 CR4: 00000000003526f0 [ 86.687325][ T5820] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.695408][ T5820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.703494][ T5820] Call Trace: [ 86.706774][ T5820] [ 86.709738][ T5820] dbAllocDmapLev+0x16b/0x3c0 [ 86.714458][ T5820] dbAllocCtl+0x14a/0x9b0 [ 86.718795][ T5820] ? __phys_addr+0xba/0x170 [ 86.723302][ T5820] dbAllocAG+0x1e8/0xf10 [ 86.727567][ T5820] ? rcu_is_watching+0x15/0xb0 [ 86.732362][ T5820] ? __kmalloc_noprof+0x29b/0x4f0 [ 86.737431][ T5820] ? dbDiscardAG+0x1b0/0x900 [ 86.742027][ T5820] dbDiscardAG+0x2df/0x900 [ 86.746453][ T5820] jfs_ioc_trim+0x436/0x670 [ 86.751066][ T5820] jfs_ioctl+0x2b5/0x3d0 [ 86.755321][ T5820] ? __pfx_jfs_ioctl+0x10/0x10 [ 86.760085][ T5820] ? rcu_is_watching+0x15/0xb0 [ 86.764856][ T5820] ? bpf_lsm_file_ioctl+0x9/0x20 [ 86.769797][ T5820] ? __pfx_jfs_ioctl+0x10/0x10 [ 86.774567][ T5820] __se_sys_ioctl+0xf9/0x170 [ 86.779163][ T5820] do_syscall_64+0xf6/0x210 [ 86.783681][ T5820] ? clear_bhb_loop+0x45/0xa0 [ 86.788364][ T5820] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.794262][ T5820] RIP: 0033:0x7f2c4fc116b9 [ 86.798693][ T5820] 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 [ 86.818303][ T5820] RSP: 002b:00007ffc7dee5dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 86.826718][ T5820] RAX: ffffffffffffffda RBX: 00007ffc7dee5fa8 RCX: 00007f2c4fc116b9 [ 86.834690][ T5820] RDX: 0000200000000080 RSI: 00000000c0185879 RDI: 0000000000000004 [ 86.842662][ T5820] RBP: 00007f2c4fc8a610 R08: 0000000000000000 R09: 00007ffc7dee5fa8 [ 86.850632][ T5820] R10: 000000000000612f R11: 0000000000000246 R12: 0000000000000001 [ 86.858621][ T5820] R13: 00007ffc7dee5f98 R14: 0000000000000001 R15: 0000000000000001 [ 86.866600][ T5820] [ 86.869618][ T5820] Modules linked in: [ 86.873693][ T5820] ---[ end trace 0000000000000000 ]--- [ 86.879350][ T5820] RIP: 0010:dbFindBits+0x177/0x1a0 [ 86.884593][ T5820] Code: e9 20 ff ff ff e8 79 44 88 fe 48 c7 c7 80 50 a3 8b 48 c7 c6 c0 4d a3 8b ba c1 0b 00 00 48 c7 c1 40 58 a3 8b e8 da 11 f0 fd 90 <0f> 0b e8 52 44 88 fe 48 c7 c7 80 50 a3 8b 48 c7 c6 c0 4d a3 8b ba [ 86.904689][ T5820] RSP: 0018:ffffc900040afac8 EFLAGS: 00010246 [ 86.910879][ T5820] RAX: 0000000000000032 RBX: 000000000000000a RCX: 820067d5201a6600 [ 86.918914][ T5820] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 86.926947][ T5820] RBP: 00000000ffffffff R08: ffffc900040af7a7 R09: 1ffff92000815ef4 [ 86.934978][ T5820] R10: dffffc0000000000 R11: fffff52000815ef5 R12: 0000000000000000 [ 86.943032][ T5820] R13: 000000000000000a R14: 0000000000000400 R15: ffff888142f3b000 [ 86.951123][ T5820] FS: 0000555575641380(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 [ 86.960144][ T5820] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.966784][ T5820] CR2: 000000000066c7e0 CR3: 0000000079934000 CR4: 00000000003526f0 [ 86.974903][ T5820] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.982950][ T5820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.990943][ T5820] Kernel panic - not syncing: Fatal exception [ 86.997330][ T5820] Kernel Offset: disabled [ 87.001666][ T5820] Rebooting in 86400 seconds..