./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1455349402 <...> Warning: Permanently added '10.128.0.48' (ED25519) to the list of known hosts. execve("./syz-executor1455349402", ["./syz-executor1455349402"], 0x7ffc9eaa6910 /* 10 vars */) = 0 brk(NULL) = 0x5555840bd000 brk(0x5555840bdd00) = 0x5555840bdd00 arch_prctl(ARCH_SET_FS, 0x5555840bd380) = 0 set_tid_address(0x5555840bd650) = 5865 set_robust_list(0x5555840bd660, 24) = 0 rseq(0x5555840bdca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1455349402", 4096) = 28 getrandom("\x73\xe8\x90\x85\xbe\xe5\x41\x91", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555840bdd00 brk(0x5555840ded00) = 0x5555840ded00 brk(0x5555840df000) = 0x5555840df000 mprotect(0x7fa4188dc000, 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) = 0x7fa410400000 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(0x7fa410400000, 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 [ 89.430857][ T5865] loop0: detected capacity change from 0 to 32768 [ 89.468516][ T5865] Oops: general protection fault, probably for non-canonical address 0xdffffc00000096c2: 0000 [#1] SMP KASAN PTI [ 89.480468][ T5865] KASAN: probably user-memory-access in range [0x000000000004b610-0x000000000004b617] [ 89.490058][ T5865] CPU: 0 UID: 0 PID: 5865 Comm: syz-executor145 Not tainted 6.16.0-next-20250805-syzkaller #0 PREEMPT(full) [ 89.501711][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 89.511824][ T5865] RIP: 0010:__bch2_err_trace+0x2c/0x230 [ 89.517396][ T5865] Code: 57 41 56 41 55 41 54 53 89 f3 49 89 fe 49 bd 00 00 00 00 00 fc ff df e8 62 96 65 fd 4d 8d be 10 b6 04 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a5 00 c9 fd 49 8b 07 65 48 ff 80 [ 89.537007][ T5865] RSP: 0018:ffffc9000408f648 EFLAGS: 00010202 [ 89.543078][ T5865] RAX: 00000000000096c2 RBX: 00000000fffff716 RCX: ffff88807ed35a00 [ 89.551043][ T5865] RDX: 0000000000000000 RSI: 00000000fffff716 RDI: 0000000000000000 [ 89.559009][ T5865] RBP: ffffc9000408f970 R08: ffff88807a554000 R09: ffff88807a554000 [ 89.566983][ T5865] R10: ffff888148d3f300 R11: ffff88802ffd0380 R12: dffffc0000000000 [ 89.574962][ T5865] R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000004b610 [ 89.582933][ T5865] FS: 00005555840bd380(0000) GS:ffff888125c24000(0000) knlGS:0000000000000000 [ 89.591860][ T5865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.598446][ T5865] CR2: 00007ffb4e035000 CR3: 0000000071f12000 CR4: 00000000003526f0 [ 89.606427][ T5865] Call Trace: [ 89.609707][ T5865] [ 89.612641][ T5865] bch2_fs_open+0x130f/0x27f0 [ 89.617358][ T5865] ? sget+0x267/0x620 [ 89.621340][ T5865] ? bch2_fs_get_tree+0x42a/0x1540 [ 89.626453][ T5865] ? vfs_get_tree+0x92/0x2b0 [ 89.631048][ T5865] ? do_new_mount+0x2a2/0x9e0 [ 89.635732][ T5865] ? __se_sys_mount+0x317/0x410 [ 89.640589][ T5865] ? do_syscall_64+0xfa/0x3b0 [ 89.645275][ T5865] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.651354][ T5865] ? __pfx_bch2_fs_open+0x10/0x10 [ 89.656392][ T5865] ? kasan_quarantine_put+0xdd/0x220 [ 89.661707][ T5865] ? sget+0x267/0x620 [ 89.665698][ T5865] ? __pfx_bch2_noset_super+0x10/0x10 [ 89.671340][ T5865] bch2_fs_get_tree+0x44f/0x1540 [ 89.676302][ T5865] ? bch2_printbuf_exit+0x6f/0xb0 [ 89.681337][ T5865] ? bch2_parse_one_mount_opt+0x756/0x8b0 [ 89.687065][ T5865] ? __pfx_bch2_parse_one_mount_opt+0x10/0x10 [ 89.693144][ T5865] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 89.698621][ T5865] ? __pfx_vfs_parse_comma_sep+0x10/0x10 [ 89.704271][ T5865] vfs_get_tree+0x92/0x2b0 [ 89.708696][ T5865] do_new_mount+0x2a2/0x9e0 [ 89.713216][ T5865] ? ns_capable+0x8a/0xf0 [ 89.717544][ T5865] ? __pfx_do_new_mount+0x10/0x10 [ 89.722580][ T5865] ? path_mount+0x61c/0xfe0 [ 89.727087][ T5865] ? user_path_at+0x44/0x60 [ 89.731613][ T5865] __se_sys_mount+0x317/0x410 [ 89.736302][ T5865] ? __pfx___se_sys_mount+0x10/0x10 [ 89.741511][ T5865] ? rcu_is_watching+0x15/0xb0 [ 89.746283][ T5865] ? __x64_sys_mount+0x20/0xc0 [ 89.751061][ T5865] do_syscall_64+0xfa/0x3b0 [ 89.755580][ T5865] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.760787][ T5865] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.766852][ T5865] ? clear_bhb_loop+0x60/0xb0 [ 89.771531][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.777440][ T5865] RIP: 0033:0x7fa418864bba [ 89.781881][ T5865] 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 [ 89.801494][ T5865] RSP: 002b:00007fff62abeef8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 89.809911][ T5865] RAX: ffffffffffffffda RBX: 00007fff62abef10 RCX: 00007fa418864bba [ 89.817886][ T5865] RDX: 00002000000058c0 RSI: 0000200000000000 RDI: 00007fff62abef10 [ 89.825858][ T5865] RBP: 0000200000000000 R08: 00007fff62abef50 R09: 000000000000591b [ 89.833824][ T5865] R10: 0000000000000000 R11: 0000000000000282 R12: 00002000000058c0 [ 89.841791][ T5865] R13: 00007fff62abef50 R14: 0000000000000003 R15: 0000000000000000 [ 89.849769][ T5865] [ 89.852788][ T5865] Modules linked in: [ 89.857183][ T5865] ---[ end trace 0000000000000000 ]--- [ 89.863017][ T5865] RIP: 0010:__bch2_err_trace+0x2c/0x230 [ 89.868614][ T5865] Code: 57 41 56 41 55 41 54 53 89 f3 49 89 fe 49 bd 00 00 00 00 00 fc ff df e8 62 96 65 fd 4d 8d be 10 b6 04 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a5 00 c9 fd 49 8b 07 65 48 ff 80 [ 89.889665][ T5865] RSP: 0018:ffffc9000408f648 EFLAGS: 00010202 [ 89.896042][ T5865] RAX: 00000000000096c2 RBX: 00000000fffff716 RCX: ffff88807ed35a00 [ 89.904085][ T5865] RDX: 0000000000000000 RSI: 00000000fffff716 RDI: 0000000000000000 [ 89.912114][ T5865] RBP: ffffc9000408f970 R08: ffff88807a554000 R09: ffff88807a554000 [ 89.920129][ T5865] R10: ffff888148d3f300 R11: ffff88802ffd0380 R12: dffffc0000000000 [ 89.928111][ T5865] R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000004b610 [ 89.936110][ T5865] FS: 00005555840bd380(0000) GS:ffff888125d24000(0000) knlGS:0000000000000000 [ 89.945067][ T5865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.951693][ T5865] CR2: 0000555d2b962148 CR3: 0000000071f12000 CR4: 00000000003526f0 [ 89.959700][ T5865] Kernel panic - not syncing: Fatal exception [ 89.966119][ T5865] Kernel Offset: disabled [ 89.970442][ T5865] Rebooting in 86400 seconds..