./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4112600097
<...>
DUID 00:04:e3:a1:4c:5b:a4:47:39:93:9a:5d:f6:69:14:97:a9:57
forked to background, child pid 4655
[ 38.092503][ T4656] 8021q: adding VLAN 0 to HW filter on device bond0
[ 38.130763][ T4656] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.1.23' (ECDSA) to the list of known hosts.
execve("./syz-executor4112600097", ["./syz-executor4112600097"], 0x7ffff8432db0 /* 10 vars */) = 0
brk(NULL) = 0x555556543000
brk(0x555556543c40) = 0x555556543c40
arch_prctl(ARCH_SET_FS, 0x555556543300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor4112600097", 4096) = 28
brk(0x555556564c40) = 0x555556564c40
brk(0x555556565000) = 0x555556565000
mprotect(0x7fc480e0d000, 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
memfd_create("\x59\xff\xff", MFD_ALLOW_SEALING|MFD_HUGETLB) = 3
mmap(0x20200000, 4194304, PROT_READ|PROT_WRITE|PROT_SEM, MAP_PRIVATE|MAP_FIXED|MAP_LOCKED, 3, 0) = 0x20200000
clone(child_stack=NULL, flags=0./strace-static-x86_64: Process 5081 attached
) = 5081
syzkaller login: [ 58.925717][ T5080] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5080 'syz-executor411'
[ 58.939993][ T5080] ==================================================================
[ 58.948116][ T5080] BUG: KASAN: null-ptr-deref in hugetlb_fault+0x1423/0x23f0
[ 58.955418][ T5080] Read of size 4 at addr 0000000000000034 by task syz-executor411/5080
[ 58.963648][ T5080]
[ 58.965962][ T5080] CPU: 0 PID: 5080 Comm: syz-executor411 Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
[ 58.975844][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
[ 58.985897][ T5080] Call Trace:
[ 58.989165][ T5080]
[ 58.992083][ T5080] dump_stack_lvl+0xd1/0x138
[ 58.996679][ T5080] ? hugetlb_fault+0x1423/0x23f0
[ 59.001606][ T5080] kasan_report+0xc0/0xf0
[ 59.005958][ T5080] ? hugetlb_fault+0x1423/0x23f0
[ 59.010884][ T5080] kasan_check_range+0x141/0x190
[ 59.015823][ T5080] hugetlb_fault+0x1423/0x23f0
[ 59.020579][ T5080] ? hugetlb_wp+0x2540/0x2540
[ 59.025245][ T5080] ? follow_hugetlb_page+0x4b1/0x1e40
[ 59.030605][ T5080] ? lock_downgrade+0x6e0/0x6e0
[ 59.035449][ T5080] ? do_raw_spin_lock+0x124/0x2b0
[ 59.040465][ T5080] ? rwlock_bug.part.0+0x90/0x90
[ 59.045431][ T5080] ? lock_acquire+0x32/0xc0
[ 59.049921][ T5080] ? follow_hugetlb_page+0x443/0x1e40
[ 59.055302][ T5080] follow_hugetlb_page+0x6ab/0x1e40
[ 59.060494][ T5080] __get_user_pages+0x29b/0xfc0
[ 59.065341][ T5080] ? rcu_read_lock_sched_held+0x3e/0x70
[ 59.070880][ T5080] ? follow_page_mask+0x10a0/0x10a0
[pid 5080] mlock(0x20308000, 12288
[pid 5081] exit(0) = ?
[pid 5081] +++ exited with 0 +++
[ 59.076075][ T5080] populate_vma_page_range+0x241/0x320
[ 59.081535][ T5080] __mm_populate+0x105/0x3b0
[ 59.086116][ T5080] ? faultin_vma_page_range+0x300/0x300
[ 59.091659][ T5080] ? up_write+0x1b0/0x520
[ 59.095987][ T5080] ? find_held_lock+0x2d/0x110
[ 59.100746][ T5080] do_mlock+0x370/0x6d0
[ 59.104904][ T5080] ? folio_evictable+0x270/0x270
[ 59.109856][ T5080] ? _raw_spin_unlock_irq+0x23/0x50
[ 59.115051][ T5080] ? lockdep_hardirqs_on+0x7d/0x100
[ 59.120252][ T5080] ? _raw_spin_unlock_irq+0x2e/0x50
[ 59.125446][ T5080] __x64_sys_mlock+0x59/0x80
[ 59.130114][ T5080] do_syscall_64+0x39/0xb0
[ 59.134547][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 59.140459][ T5080] RIP: 0033:0x7fc480da0bc9
[ 59.144880][ T5080] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 14 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 c0 ff ff ff f7 d8 64 89 01 48
[ 59.164480][ T5080] RSP: 002b:00007ffd32687728 EFLAGS: 00000246 ORIG_RAX: 0000000000000095
[ 59.172883][ T5080] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc480da0bc9
[ 59.180841][ T5080] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020308000
[ 59.188814][ T5080] RBP: 00007fc480d64d10 R08: 0000000000000000 R09: 0000000000000000
[ 59.196778][ T5080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc480d64da0
[ 59.204748][ T5080] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 59.212719][ T5080]
[ 59.215734][ T5080] ==================================================================
[ 59.223868][ T5080] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 59.231073][ T5080] CPU: 0 PID: 5080 Comm: syz-executor411 Not tainted 6.2.0-rc4-next-20230120-syzkaller #0
[ 59.240975][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
[ 59.251046][ T5080] Call Trace:
[ 59.254323][ T5080]
[ 59.257269][ T5080] dump_stack_lvl+0xd1/0x138
[ 59.261876][ T5080] panic+0x2cc/0x626
[ 59.265807][ T5080] ? panic_print_sys_info.part.0+0x110/0x110
[ 59.271800][ T5080] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 59.277975][ T5080] check_panic_on_warn.cold+0x19/0x35
[ 59.283366][ T5080] end_report.part.0+0x36/0x73
[ 59.288170][ T5080] ? hugetlb_fault+0x1423/0x23f0
[ 59.293130][ T5080] kasan_report.cold+0xa/0xf
[ 59.297751][ T5080] ? hugetlb_fault+0x1423/0x23f0
[ 59.302722][ T5080] kasan_check_range+0x141/0x190
[ 59.307702][ T5080] hugetlb_fault+0x1423/0x23f0
[ 59.312525][ T5080] ? hugetlb_wp+0x2540/0x2540
[ 59.317222][ T5080] ? follow_hugetlb_page+0x4b1/0x1e40
[ 59.322610][ T5080] ? lock_downgrade+0x6e0/0x6e0
[ 59.327496][ T5080] ? do_raw_spin_lock+0x124/0x2b0
[ 59.332629][ T5080] ? rwlock_bug.part.0+0x90/0x90
[ 59.337583][ T5080] ? lock_acquire+0x32/0xc0
[ 59.342094][ T5080] ? follow_hugetlb_page+0x443/0x1e40
[ 59.347494][ T5080] follow_hugetlb_page+0x6ab/0x1e40
[ 59.352713][ T5080] __get_user_pages+0x29b/0xfc0
[ 59.357583][ T5080] ? rcu_read_lock_sched_held+0x3e/0x70
[ 59.363150][ T5080] ? follow_page_mask+0x10a0/0x10a0
[ 59.368374][ T5080] populate_vma_page_range+0x241/0x320
[ 59.373854][ T5080] __mm_populate+0x105/0x3b0
[ 59.378459][ T5080] ? faultin_vma_page_range+0x300/0x300
[ 59.384026][ T5080] ? up_write+0x1b0/0x520
[ 59.388384][ T5080] ? find_held_lock+0x2d/0x110
[ 59.393533][ T5080] do_mlock+0x370/0x6d0
[ 59.397724][ T5080] ? folio_evictable+0x270/0x270
[ 59.402694][ T5080] ? _raw_spin_unlock_irq+0x23/0x50
[ 59.407921][ T5080] ? lockdep_hardirqs_on+0x7d/0x100
[ 59.413129][ T5080] ? _raw_spin_unlock_irq+0x2e/0x50
[ 59.418361][ T5080] __x64_sys_mlock+0x59/0x80
[ 59.422963][ T5080] do_syscall_64+0x39/0xb0
[ 59.427397][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 59.433305][ T5080] RIP: 0033:0x7fc480da0bc9
[ 59.437724][ T5080] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 14 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 c0 ff ff ff f7 d8 64 89 01 48
[ 59.457344][ T5080] RSP: 002b:00007ffd32687728 EFLAGS: 00000246 ORIG_RAX: 0000000000000095
[ 59.465771][ T5080] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc480da0bc9
[ 59.473774][ T5080] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020308000
[ 59.481756][ T5080] RBP: 00007fc480d64d10 R08: 0000000000000000 R09: 0000000000000000
[ 59.489729][ T5080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc480d64da0
[ 59.497708][ T5080] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 59.505709][ T5080]
[ 59.508889][ T5080] Kernel Offset: disabled
[ 59.513213][ T5080] Rebooting in 86400 seconds..