./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2984908977 <...> Warning: Permanently added '10.128.1.101' (ED25519) to the list of known hosts. execve("./syz-executor2984908977", ["./syz-executor2984908977"], 0x7fff20130a00 /* 10 vars */) = 0 brk(NULL) = 0x555556eef000 brk(0x555556eefe00) = 0x555556eefe00 arch_prctl(ARCH_SET_FS, 0x555556eef480) = 0 set_tid_address(0x555556eef750) = 297 set_robust_list(0x555556eef760, 24) = 0 rseq(0x555556eefda0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2984908977", 4096) = 28 getrandom("\x4b\x33\x85\x9f\x6f\x8a\x4f\x86", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556eefe00 brk(0x555556f10e00) = 0x555556f10e00 brk(0x555556f11000) = 0x555556f11000 mprotect(0x7f0e86a14000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f0e8696c7b0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0e86974750}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f0e8696c7b0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f0e86974750}, NULL, 8) = 0 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0e7e562000 write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 munmap(0x7f0e7e562000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 [ 23.845276][ T28] audit: type=1400 audit(1712566985.610:66): avc: denied { execmem } for pid=297 comm="syz-executor298" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.864737][ T28] audit: type=1400 audit(1712566985.640:67): avc: denied { read write } for pid=297 comm="syz-executor298" name="loop0" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.865198][ T297] loop0: detected capacity change from 0 to 256 mkdir("./file0", 0777) = 0 [ 23.889053][ T28] audit: type=1400 audit(1712566985.640:68): avc: denied { open } for pid=297 comm="syz-executor298" path="/dev/loop0" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.897182][ T297] exfat: Deprecated parameter 'utf8' [ 23.923785][ T297] exfat: Deprecated parameter 'utf8' mount("/dev/loop0", "./file0", "exfat", MS_STRICTATIME, "utf8,utf8,errors=continue,iocharset=maccroatian,dmask=00000000000000371606241,namecase=1,fmask=00000"...) = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 [ 23.926339][ T28] audit: type=1400 audit(1712566985.640:69): avc: denied { ioctl } for pid=297 comm="syz-executor298" path="/dev/loop0" dev="devtmpfs" ino=114 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.929357][ T297] exfat: Deprecated parameter 'namecase' [ 23.960106][ T28] audit: type=1400 audit(1712566985.660:70): avc: denied { mounton } for pid=297 comm="syz-executor298" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.961545][ T297] exFAT-fs (loop0): failed to load upcase table (idx : 0x00011f41, chksum : 0xf6e84b2e, utbl_chksum : 0xe619d30d) mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 openat(AT_FDCWD, "/dev/zero", O_RDONLY) = 4 mmap(0x20000000, 2097151, PROT_READ, MAP_SHARED|MAP_FIXED, 4, 0) = 0x20000000 madvise(0x20000000, 6291459, MADV_HUGEPAGE) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000240} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000248} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000250} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000258} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000260} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000268} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000270} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000278} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000280} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000288} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000290} --- clone3({flags=0, exit_signal=0, stack=NULL, stack_size=0}, 88) = 299 madvise(0x20000000, 6291459, 0x19 /* MADV_??? */./strace-static-x86_64: Process 299 attached [ 23.994819][ T28] audit: type=1400 audit(1712566985.760:71): avc: denied { mount } for pid=297 comm="syz-executor298" name="/" dev="loop0" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 23.997982][ T297] incfs: ino conflict with backing FS 2 [ 24.017353][ T28] audit: type=1400 audit(1712566985.760:72): avc: denied { mounton } for pid=297 comm="syz-executor298" path="/root/file0/file0" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.045985][ T28] audit: type=1400 audit(1712566985.760:73): avc: denied { write } for pid=297 comm="syz-executor298" name="file0" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.046911][ T297] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 24.068345][ T28] audit: type=1400 audit(1712566985.760:74): avc: denied { add_name } for pid=297 comm="syz-executor298" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.075733][ T297] #PF: supervisor instruction fetch in kernel mode [ 24.075744][ T297] #PF: error_code(0x0010) - not-present page [ 24.075754][ T297] PGD 11e49a067 P4D 11e49a067 [ 24.096713][ T28] audit: type=1400 audit(1712566985.760:75): avc: denied { create } for pid=297 comm="syz-executor298" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 24.102809][ T297] PUD 11f92f067 PMD 0 [ 24.102829][ T297] Oops: 0010 [#1] PREEMPT SMP KASAN [pid 299] exit(0) = ? [pid 299] +++ exited with 0 +++ [ 24.142388][ T297] CPU: 1 PID: 297 Comm: syz-executor298 Not tainted 6.1.75-syzkaller-00123-g60534eef4739 #0 [ 24.152280][ T297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 24.162174][ T297] RIP: 0010:0x0 [ 24.165476][ T297] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 24.172677][ T297] RSP: 0018:ffffc90000f470d8 EFLAGS: 00010246 [ 24.178579][ T297] RAX: 1ffff920001e8ed0 RBX: dffffc0000000000 RCX: ffff88810964bcc0 [ 24.186391][ T297] RDX: 0000000000000000 RSI: ffffea0004892700 RDI: ffff888120e01980 [ 24.194200][ T297] RBP: ffffc90000f47230 R08: ffffffff81a41438 R09: fffff940009124e7 [ 24.202012][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000f47680 [ 24.209823][ T297] R13: ffffea0004892700 R14: ffffc90000f47698 R15: 0000000000000000 [ 24.217635][ T297] FS: 0000555556eef480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.226404][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.232822][ T297] CR2: ffffffffffffffd6 CR3: 000000011e467000 CR4: 00000000003506a0 [ 24.240636][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.248446][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.256256][ T297] Call Trace: [ 24.259382][ T297] [ 24.262159][ T297] ? __die_body+0x62/0xb0 [ 24.266326][ T297] ? __die+0x7e/0x90 [ 24.270058][ T297] ? page_fault_oops+0x7f9/0xa90 [ 24.274831][ T297] ? kernelmode_fixup_or_oops+0x270/0x270 [ 24.280386][ T297] ? cgroup_rstat_updated+0xe5/0x370 [ 24.285507][ T297] ? is_errata93+0xc7/0x240 [ 24.289846][ T297] ? exc_page_fault+0x537/0x700 [ 24.294533][ T297] ? asm_exc_page_fault+0x27/0x30 [ 24.299394][ T297] ? read_pages+0x838/0xd40 [ 24.303731][ T297] read_pages+0x89c/0xd40 [ 24.307898][ T297] ? workingset_activation+0x430/0x430 [ 24.313191][ T297] ? folio_add_lru+0x280/0x3f0 [ 24.317794][ T297] ? page_cache_ra_unbounded+0x690/0x690 [ 24.323258][ T297] ? filemap_add_folio+0x18f/0x200 [ 24.328209][ T297] ? __filemap_add_folio+0xd10/0xd10 [ 24.333329][ T297] page_cache_ra_order+0x7f4/0xb40 [ 24.338277][ T297] ? do_page_cache_ra+0x110/0x110 [ 24.343133][ T297] ? xas_create+0xf3a/0x1630 [ 24.347562][ T297] ondemand_readahead+0x92a/0xef0 [ 24.352422][ T297] ? cgroup_rstat_updated+0xe5/0x370 [ 24.357543][ T297] ? page_cache_sync_ra+0x450/0x450 [ 24.362576][ T297] ? blk_cgroup_congested+0x132/0x150 [ 24.367784][ T297] page_cache_sync_ra+0x3d6/0x450 [ 24.372646][ T297] hpage_collapse_scan_file+0x19ba/0x46e0 [ 24.378203][ T297] ? __kasan_check_write+0x14/0x20 [ 24.383147][ T297] ? wake_up_q+0x11c/0x1d0 [ 24.387401][ T297] ? hugepage_vma_revalidate+0x310/0x310 [ 24.392867][ T297] ? mutex_unlock+0x17b/0x260 [ 24.397383][ T297] ? __lru_add_drain_all+0x714/0x770 [ 24.402503][ T297] madvise_collapse+0x639/0xcf0 [ 24.407189][ T297] ? khugepaged_min_free_kbytes_update+0x90/0x90 [ 24.413351][ T297] ? memset+0x35/0x40 [ 24.417169][ T297] ? blk_start_plug+0x9c/0x130 [ 24.421769][ T297] do_madvise+0x15c1/0x3de0 [ 24.426113][ T297] ? madvise_set_anon_name+0x4c0/0x4c0 [ 24.431403][ T297] ? __sched_clock_gtod_offset+0x100/0x100 [ 24.437044][ T297] ? native_set_ldt+0x130/0x130 [ 24.441730][ T297] ? __update_idle_core+0x310/0x310 [ 24.446766][ T297] ? _raw_spin_unlock+0x4c/0x70 [ 24.451450][ T297] ? finish_task_switch+0x167/0x7b0 [ 24.456486][ T297] ? __schedule+0xcaf/0x1550 [ 24.460910][ T297] ? __kasan_check_write+0x14/0x20 [ 24.465860][ T297] ? __kasan_check_write+0x14/0x20 [ 24.470805][ T297] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 24.475754][ T297] ? _raw_spin_lock_irqsave+0x210/0x210 [ 24.481134][ T297] ? cgroup_update_frozen+0x15f/0x980 [ 24.486344][ T297] ? memset+0x35/0x40 [ 24.490160][ T297] ? ptrace_stop+0x709/0x930 [ 24.494589][ T297] ? _raw_spin_unlock_irq+0x4d/0x70 [ 24.499620][ T297] ? ptrace_notify+0x249/0x350 [ 24.504221][ T297] ? do_notify_parent+0xa20/0xa20 [ 24.509081][ T297] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 24.516374][ T297] ? exit_to_user_mode_prepare+0x39/0xa0 [ 24.521839][ T297] __x64_sys_madvise+0xa8/0xc0 [ 24.526443][ T297] do_syscall_64+0x3d/0xb0 [ 24.530693][ T297] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 24.536421][ T297] RIP: 0033:0x7f0e869a09b9 [ 24.540679][ T297] 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 [ 24.560116][ T297] RSP: 002b:00007fffb2ed1948 EFLAGS: 00000246 ORIG_RAX: 000000000000001c [ 24.568368][ T297] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0e869a09b9 [ 24.576171][ T297] RDX: 0000000000000019 RSI: 0000000000600003 RDI: 0000000020000000 [ 24.583981][ T297] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 24.591794][ T297] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e8696bf92 [ 24.599605][ T297] R13: 00007fffb2ed1c18 R14: 0000000000000001 R15: 0000000000000001 [ 24.607418][ T297] [ 24.610287][ T297] Modules linked in: [ 24.614013][ T297] CR2: 0000000000000000 [ 24.618009][ T297] ---[ end trace 0000000000000000 ]--- [ 24.623298][ T297] RIP: 0010:0x0 [ 24.626603][ T297] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 24.633808][ T297] RSP: 0018:ffffc90000f470d8 EFLAGS: 00010246 [ 24.639702][ T297] RAX: 1ffff920001e8ed0 RBX: dffffc0000000000 RCX: ffff88810964bcc0 [ 24.647537][ T297] RDX: 0000000000000000 RSI: ffffea0004892700 RDI: ffff888120e01980 [ 24.655326][ T297] RBP: ffffc90000f47230 R08: ffffffff81a41438 R09: fffff940009124e7 [ 24.663145][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000f47680 [ 24.670974][ T297] R13: ffffea0004892700 R14: ffffc90000f47698 R15: 0000000000000000 [ 24.678760][ T297] FS: 0000555556eef480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.687547][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.693946][ T297] CR2: ffffffffffffffd6 CR3: 000000011e467000 CR4: 00000000003506a0 [ 24.701762][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.709572][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.717384][ T297] Kernel panic - not syncing: Fatal exception [ 24.723548][ T297] Kernel Offset: disabled [ 24.727665][ T297] Rebooting in 86400 seconds..