./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2270813424 <...> Warning: Permanently added '10.128.1.99' (ED25519) to the list of known hosts. execve("./syz-executor2270813424", ["./syz-executor2270813424"], 0x7ffde57a6400 /* 10 vars */) = 0 brk(NULL) = 0x55556af99000 brk(0x55556af99d00) = 0x55556af99d00 arch_prctl(ARCH_SET_FS, 0x55556af99380) = 0 set_tid_address(0x55556af99650) = 5842 set_robust_list(0x55556af99660, 24) = 0 rseq(0x55556af99ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2270813424", 4096) = 28 getrandom("\x53\x7f\x0a\x1c\xc8\xef\x47\x5d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556af99d00 brk(0x55556afbad00) = 0x55556afbad00 brk(0x55556afbb000) = 0x55556afbb000 mprotect(0x7fb499de5000, 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) = 0x7fb491800000 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(0x7fb491800000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file2", 0777) = 0 [ 91.801340][ T5842] loop0: detected capacity change from 0 to 32768 [ 91.833192][ T978] cfg80211: failed to load regulatory.db [ 91.845951][ T5842] ======================================================= [ 91.845951][ T5842] WARNING: The mand mount option has been deprecated and [ 91.845951][ T5842] and is ignored by this kernel. Remove the mand [ 91.845951][ T5842] option from the mount to silence this warning. [ 91.845951][ T5842] ======================================================= [ 91.894190][ T5842] Oops: divide error: 0000 [#1] SMP KASAN PTI [ 91.900349][ T5842] CPU: 0 UID: 0 PID: 5842 Comm: syz-executor227 Not tainted 6.16.0-rc1-next-20250610-syzkaller #0 PREEMPT(full) [ 91.912275][ T5842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 91.922357][ T5842] RIP: 0010:bch2_sb_members_v2_to_text+0x10a/0x3c0 [ 91.928909][ T5842] Code: 49 89 f4 49 c1 ec 03 43 0f b6 0c 34 84 c9 48 89 b4 24 a0 00 00 00 0f 85 67 02 00 00 0f b7 0e 48 89 c2 48 c1 ea 20 74 07 48 99 <48> f7 f9 eb 04 31 d2 f7 f1 48 89 84 24 b0 00 00 00 48 8b 84 24 c8 [ 91.948565][ T5842] RSP: 0018:ffffc9000434ed40 EFLAGS: 00010a02 [ 91.954687][ T5842] RAX: ffff88807b3f8368 RBX: 0000000000000000 RCX: 0000000000000000 [ 91.962700][ T5842] RDX: ffffffffffffffff RSI: ffff88807b3f8338 RDI: 000000000000000e [ 91.970700][ T5842] RBP: ffffc9000434ef70 R08: 000000000000003a R09: 000000000000003a [ 91.978703][ T5842] R10: dffffc0000000000 R11: ffffffff844fcfb0 R12: 1ffff1100f67f067 [ 91.986698][ T5842] R13: 000000000000000b R14: dffffc0000000000 R15: 1ffff92000869dc4 [ 91.994690][ T5842] FS: 000055556af99380(0000) GS:ffff888125c4b000(0000) knlGS:0000000000000000 [ 92.003640][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.010236][ T5842] CR2: 000056367c34f6a8 CR3: 00000000770e4000 CR4: 00000000003526f0 [ 92.018253][ T5842] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.026335][ T5842] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.034321][ T5842] Call Trace: [ 92.037615][ T5842] [ 92.040575][ T5842] ? __asan_memcpy+0x40/0x70 [ 92.045200][ T5842] ? printbuf_do_indent+0xb67/0xba0 [ 92.050423][ T5842] ? __pfx_bch2_sb_members_v2_to_text+0x10/0x10 [ 92.056691][ T5842] ? bch2_printbuf_make_room+0xdb/0x360 [ 92.062257][ T5842] ? bch2_prt_newline+0x4a8/0xab0 [ 92.067292][ T5842] ? bch2_printbuf_tabstop_push+0xda/0x240 [ 92.073140][ T5842] ? bch2_sb_field_to_text+0x193/0x260 [ 92.078618][ T5842] bch2_sb_field_validate+0x1c6/0x280 [ 92.084011][ T5842] ? __pfx_bch2_sb_field_validate+0x10/0x10 [ 92.089925][ T5842] ? __pfx_wait_for_common_io+0x10/0x10 [ 92.095501][ T5842] ? bch2_sb_compatible+0x628/0xef0 [ 92.100719][ T5842] ? bch2_opt_validate+0x2cb/0x310 [ 92.105853][ T5842] bch2_sb_validate+0x14bd/0x1980 [ 92.110903][ T5842] ? __pfx_bch2_sb_validate+0x10/0x10 [ 92.116290][ T5842] ? bch2_sb_compatible+0x628/0xef0 [ 92.121508][ T5842] ? read_one_super+0x759/0x850 [ 92.126468][ T5842] ? __pfx_read_one_super+0x10/0x10 [ 92.131687][ T5842] ? bch2_sb_realloc+0x446/0x630 [ 92.136647][ T5842] ? __pfx_bch2_sb_realloc+0x10/0x10 [ 92.141950][ T5842] ? bdev_file_open_by_path+0x37c/0x4d0 [ 92.147508][ T5842] ? rcu_is_watching+0x15/0xb0 [ 92.152283][ T5842] ? __pfx_bdev_file_open_by_path+0x10/0x10 [ 92.158188][ T5842] ? kstrdup+0x81/0x100 [ 92.162452][ T5842] __bch2_read_super+0xba4/0x1040 [ 92.167498][ T5842] ? stack_depot_save_flags+0x429/0x900 [ 92.173061][ T5842] ? __pfx___bch2_read_super+0x10/0x10 [ 92.178564][ T5842] ? __bch2_darray_resize_noprof+0x1c9/0x290 [ 92.184557][ T5842] ? rcu_is_watching+0x15/0xb0 [ 92.189335][ T5842] bch2_fs_open+0x1fe/0x2570 [ 92.193942][ T5842] ? __se_sys_mount+0x317/0x410 [ 92.198806][ T5842] ? do_syscall_64+0xfa/0x3b0 [ 92.203499][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.209592][ T5842] ? __pfx_bch2_fs_open+0x10/0x10 [ 92.214637][ T5842] ? kasan_quarantine_put+0xdd/0x220 [ 92.219953][ T5842] ? sget+0x267/0x620 [ 92.223952][ T5842] ? __pfx_bch2_noset_super+0x10/0x10 [ 92.229343][ T5842] bch2_fs_get_tree+0x437/0x14f0 [ 92.234310][ T5842] ? kfree+0x4d/0x440 [ 92.238312][ T5842] ? lookup_constant+0xa2/0xf0 [ 92.243096][ T5842] ? bch2_printbuf_exit+0x6f/0xb0 [ 92.248137][ T5842] ? bch2_parse_one_mount_opt+0x6dc/0x880 [ 92.253891][ T5842] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 92.259288][ T5842] ? aa_get_newest_label+0xf7/0x5d0 [ 92.264556][ T5842] ? vfs_parse_monolithic_sep+0x2df/0x310 [ 92.270297][ T5842] ? apparmor_capable+0x137/0x1b0 [ 92.275350][ T5842] vfs_get_tree+0x8f/0x2b0 [ 92.279780][ T5842] do_new_mount+0x24a/0xa40 [ 92.284300][ T5842] __se_sys_mount+0x317/0x410 [ 92.288994][ T5842] ? __pfx___se_sys_mount+0x10/0x10 [ 92.294209][ T5842] ? rcu_is_watching+0x15/0xb0 [ 92.298989][ T5842] ? __x64_sys_mount+0x20/0xc0 [ 92.303767][ T5842] do_syscall_64+0xfa/0x3b0 [ 92.308310][ T5842] ? lockdep_hardirqs_on+0x9c/0x150 [ 92.313789][ T5842] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.319870][ T5842] ? clear_bhb_loop+0x60/0xb0 [ 92.324647][ T5842] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.330556][ T5842] RIP: 0033:0x7fb499d6198a [ 92.334995][ T5842] 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 [ 92.354619][ T5842] RSP: 002b:00007ffe1a446798 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 92.363063][ T5842] RAX: ffffffffffffffda RBX: 00007ffe1a4467b0 RCX: 00007fb499d6198a [ 92.371049][ T5842] RDX: 0000200000000000 RSI: 0000200000011a40 RDI: 00007ffe1a4467b0 [ 92.379047][ T5842] RBP: 0000200000000000 R08: 00007ffe1a4467f0 R09: 00000000000119f3 [ 92.387035][ T5842] R10: 00000000028080c9 R11: 0000000000000282 R12: 0000200000011a40 [ 92.395018][ T5842] R13: 0000000000000004 R14: 0000000000000003 R15: 00007ffe1a4467f0 [ 92.403009][ T5842] [ 92.406037][ T5842] Modules linked in: [ 92.410200][ T5842] ---[ end trace 0000000000000000 ]--- [ 92.415860][ T5842] RIP: 0010:bch2_sb_members_v2_to_text+0x10a/0x3c0 [ 92.422513][ T5842] Code: 49 89 f4 49 c1 ec 03 43 0f b6 0c 34 84 c9 48 89 b4 24 a0 00 00 00 0f 85 67 02 00 00 0f b7 0e 48 89 c2 48 c1 ea 20 74 07 48 99 <48> f7 f9 eb 04 31 d2 f7 f1 48 89 84 24 b0 00 00 00 48 8b 84 24 c8 [ 92.442495][ T5842] RSP: 0018:ffffc9000434ed40 EFLAGS: 00010a02 [ 92.448623][ T5842] RAX: ffff88807b3f8368 RBX: 0000000000000000 RCX: 0000000000000000 [ 92.456683][ T5842] RDX: ffffffffffffffff RSI: ffff88807b3f8338 RDI: 000000000000000e [ 92.464734][ T5842] RBP: ffffc9000434ef70 R08: 000000000000003a R09: 000000000000003a [ 92.472773][ T5842] R10: dffffc0000000000 R11: ffffffff844fcfb0 R12: 1ffff1100f67f067 [ 92.480773][ T5842] R13: 000000000000000b R14: dffffc0000000000 R15: 1ffff92000869dc4 [ 92.489784][ T5842] FS: 000055556af99380(0000) GS:ffff888125d4b000(0000) knlGS:0000000000000000 [ 92.498789][ T5842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.505434][ T5842] CR2: 000056367c3149f8 CR3: 00000000770e4000 CR4: 00000000003526f0 [ 92.513494][ T5842] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.521516][ T5842] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.529496][ T5842] Kernel panic - not syncing: Fatal exception [ 92.535745][ T5842] Kernel Offset: disabled [ 92.540078][ T5842] Rebooting in 86400 seconds..