./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1382381319
<...>
Warning: Permanently added '10.128.0.124' (ED25519) to the list of known hosts.
execve("./syz-executor1382381319", ["./syz-executor1382381319"], 0x7ffd2cae0280 /* 10 vars */) = 0
brk(NULL) = 0x55556df9f000
brk(0x55556df9fd00) = 0x55556df9fd00
arch_prctl(ARCH_SET_FS, 0x55556df9f380) = 0
set_tid_address(0x55556df9f650) = 5838
set_robust_list(0x55556df9f660, 24) = 0
rseq(0x55556df9fca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1382381319", 4096) = 28
getrandom("\xd9\x50\xb6\x63\x4f\xca\x5c\x58", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556df9fd00
brk(0x55556dfc0d00) = 0x55556dfc0d00
brk(0x55556dfc1000) = 0x55556dfc1000
mprotect(0x7ff3b378a000, 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
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached
, child_tidptr=0x55556df9f650) = 5840
[pid 5840] set_robust_list(0x55556df9f660, 24) = 0
[pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5840] setpgid(0, 0) = 0
[pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5840] write(3, "1000", 4) = 4
[pid 5840] close(3) = 0
[pid 5840] write(1, "executing program\n", 18executing program
) = 18
[pid 5840] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0
[pid 5840] sched_setscheduler(0, SCHED_RR, [8]) = 0
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff3ab200000
[pid 5840] 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"..., 134217728) = 134217728
[pid 5840] munmap(0x7ff3ab200000, 138412032) = 0
[pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
syzkaller login: [ 92.107285][ T1210] cfg80211: failed to load regulatory.db
[pid 5840] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5840] close(3) = 0
[pid 5840] close(4) = 0
[pid 5840] mkdir("./file0", 0777) = 0
[ 92.163046][ T5840] loop0: detected capacity change from 0 to 262144
[ 92.192693][ T5840] ==================================================================
[ 92.200798][ T5840] BUG: KASAN: slab-out-of-bounds in build_sit_entries+0x1b0c/0x1f80
[ 92.208820][ T5840] Read of size 4 at addr ffff888024798a20 by task syz-executor138/5840
[ 92.217095][ T5840]
[ 92.219476][ T5840] CPU: 0 UID: 0 PID: 5840 Comm: syz-executor138 Not tainted 6.15.0-rc7-next-20250523-syzkaller #0 PREEMPT(full)
[ 92.219504][ T5840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 92.219526][ T5840] Call Trace:
[ 92.219534][ T5840]
[ 92.219543][ T5840] dump_stack_lvl+0x189/0x250
[ 92.219568][ T5840] ? __virt_addr_valid+0x1c8/0x5c0
[ 92.219590][ T5840] ? rcu_is_watching+0x15/0xb0
[ 92.219608][ T5840] ? __kasan_check_byte+0x12/0x40
[ 92.219631][ T5840] ? __pfx_dump_stack_lvl+0x10/0x10
[ 92.219656][ T5840] ? rcu_is_watching+0x15/0xb0
[ 92.219675][ T5840] ? lock_release+0x4b/0x3e0
[ 92.219707][ T5840] ? __virt_addr_valid+0x1c8/0x5c0
[ 92.219729][ T5840] ? __virt_addr_valid+0x4a5/0x5c0
[ 92.219752][ T5840] print_report+0xd2/0x2b0
[ 92.219779][ T5840] ? build_sit_entries+0x1b0c/0x1f80
[ 92.219800][ T5840] kasan_report+0x118/0x150
[ 92.219823][ T5840] ? build_sit_entries+0x1b0c/0x1f80
[ 92.219849][ T5840] build_sit_entries+0x1b0c/0x1f80
[ 92.219881][ T5840] ? __pfx_build_sit_entries+0x10/0x10
[ 92.219915][ T5840] f2fs_build_segment_manager+0x3112/0x49f0
[ 92.219940][ T5840] ? f2fs_fill_super+0x45bc/0x6c80
[ 92.219975][ T5840] f2fs_fill_super+0x45bc/0x6c80
[ 92.220030][ T5840] mount_bdev+0x211/0x2c0
[ 92.220050][ T5840] ? __pfx_f2fs_fill_super+0x10/0x10
[ 92.220080][ T5840] ? __pfx_mount_bdev+0x10/0x10
[ 92.220100][ T5840] ? rcu_is_watching+0x15/0xb0
[ 92.220122][ T5840] legacy_get_tree+0xfd/0x1a0
[ 92.220146][ T5840] ? __pfx_f2fs_mount+0x10/0x10
[ 92.220176][ T5840] vfs_get_tree+0x92/0x2b0
[ 92.220198][ T5840] do_new_mount+0x24a/0xa40
[ 92.220226][ T5840] __se_sys_mount+0x317/0x410
[ 92.220253][ T5840] ? __pfx___se_sys_mount+0x10/0x10
[ 92.220276][ T5840] ? rcu_is_watching+0x15/0xb0
[ 92.220298][ T5840] ? __x64_sys_mount+0x20/0xc0
[ 92.220322][ T5840] do_syscall_64+0xfa/0x3b0
[ 92.220355][ T5840] ? lockdep_hardirqs_on+0x9c/0x150
[ 92.220378][ T5840] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.220398][ T5840] ? clear_bhb_loop+0x60/0xb0
[ 92.220422][ T5840] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.220443][ T5840] RIP: 0033:0x7ff3b36f7e6a
[ 92.220467][ T5840] 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
[ 92.220491][ T5840] RSP: 002b:00007ffc20c3a528 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 92.220514][ T5840] RAX: ffffffffffffffda RBX: 00007ffc20c3a540 RCX: 00007ff3b36f7e6a
[ 92.220529][ T5840] RDX: 0000200000020440 RSI: 0000200000020480 RDI: 00007ffc20c3a540
[ 92.220544][ T5840] RBP: 0000200000020480 R08: 00007ffc20c3a580 R09: 0000000000020419
[ 92.220558][ T5840] R10: 0000000000000000 R11: 0000000000000286 R12: 0000200000020440
[ 92.220572][ T5840] R13: 00007ffc20c3a580 R14: 0000000000000003 R15: 0000000000000000
[ 92.220594][ T5840]
[ 92.220602][ T5840]
[ 92.499817][ T5840] Allocated by task 5840:
[ 92.504147][ T5840] kasan_save_track+0x3e/0x80
[ 92.508849][ T5840] __kasan_kmalloc+0x93/0xb0
[ 92.513449][ T5840] __kvmalloc_node_noprof+0x30d/0x5f0
[ 92.518827][ T5840] f2fs_build_segment_manager+0x1485/0x49f0
[ 92.524731][ T5840] f2fs_fill_super+0x45bc/0x6c80
[ 92.529681][ T5840] mount_bdev+0x211/0x2c0
[ 92.534012][ T5840] legacy_get_tree+0xfd/0x1a0
[ 92.538693][ T5840] vfs_get_tree+0x92/0x2b0
[ 92.543110][ T5840] do_new_mount+0x24a/0xa40
[ 92.547617][ T5840] __se_sys_mount+0x317/0x410
[ 92.552304][ T5840] do_syscall_64+0xfa/0x3b0
[ 92.556819][ T5840] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.562717][ T5840]
[ 92.565058][ T5840] The buggy address belongs to the object at ffff888024798000
[ 92.565058][ T5840] which belongs to the cache kmalloc-4k of size 4096
[ 92.579113][ T5840] The buggy address is located 0 bytes to the right of
[ 92.579113][ T5840] allocated 2592-byte region [ffff888024798000, ffff888024798a20)
[ 92.593694][ T5840]
[ 92.596046][ T5840] The buggy address belongs to the physical page:
[ 92.602460][ T5840] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x24798
[ 92.611244][ T5840] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 92.619745][ T5840] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 92.627313][ T5840] page_type: f5(slab)
[ 92.631298][ T5840] raw: 00fff00000000040 ffff88801a442140 dead000000000122 0000000000000000
[ 92.639886][ T5840] raw: 0000000000000000 0000000000040004 00000000f5000000 0000000000000000
[ 92.648472][ T5840] head: 00fff00000000040 ffff88801a442140 dead000000000122 0000000000000000
[ 92.657145][ T5840] head: 0000000000000000 0000000000040004 00000000f5000000 0000000000000000
[ 92.665818][ T5840] head: 00fff00000000003 ffffea000091e601 00000000ffffffff 00000000ffffffff
[ 92.674575][ T5840] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
[ 92.683250][ T5840] page dumped because: kasan: bad access detected
[ 92.689671][ T5840] page_owner tracks the page as allocated
[ 92.695382][ T5840] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5840, tgid 5840 (syz-executor138), ts 92190833917, free_ts 90155481941
[ 92.717022][ T5840] post_alloc_hook+0x240/0x2a0
[ 92.721799][ T5840] get_page_from_freelist+0x21e4/0x22c0
[ 92.727351][ T5840] __alloc_frozen_pages_noprof+0x181/0x370
[ 92.733163][ T5840] alloc_pages_mpol+0x232/0x4a0
[ 92.738013][ T5840] allocate_slab+0x8a/0x3b0
[ 92.742522][ T5840] ___slab_alloc+0xbfc/0x1480
[ 92.747202][ T5840] __kvmalloc_node_noprof+0x429/0x5f0
[ 92.752575][ T5840] f2fs_build_segment_manager+0x1485/0x49f0
[ 92.758561][ T5840] f2fs_fill_super+0x45bc/0x6c80
[ 92.763510][ T5840] mount_bdev+0x211/0x2c0
[ 92.767944][ T5840] legacy_get_tree+0xfd/0x1a0
[ 92.772815][ T5840] vfs_get_tree+0x92/0x2b0
[ 92.777273][ T5840] do_new_mount+0x24a/0xa40
[ 92.781787][ T5840] __se_sys_mount+0x317/0x410
[ 92.786469][ T5840] do_syscall_64+0xfa/0x3b0
[ 92.791004][ T5840] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.796901][ T5840] page last free pid 5833 tgid 5833 stack trace:
[ 92.803223][ T5840] __free_frozen_pages+0xc71/0xe70
[ 92.808341][ T5840] __put_partials+0x161/0x1c0
[ 92.813051][ T5840] put_cpu_partial+0x17c/0x250
[ 92.817823][ T5840] __slab_free+0x2f7/0x400
[ 92.822248][ T5840] qlist_free_all+0x97/0x140
[ 92.826851][ T5840] kasan_quarantine_reduce+0x148/0x160
[ 92.832324][ T5840] __kasan_slab_alloc+0x22/0x80
[ 92.837178][ T5840] kmem_cache_alloc_node_noprof+0x1bb/0x3c0
[ 92.843074][ T5840] __alloc_skb+0x112/0x2d0
[ 92.847518][ T5840] tcp_stream_alloc_skb+0x3d/0x340
[ 92.852641][ T5840] tcp_sendmsg_locked+0x115c/0x5550
[ 92.857846][ T5840] tcp_sendmsg+0x2f/0x50
[ 92.862100][ T5840] __sock_sendmsg+0x19c/0x270
[ 92.866783][ T5840] sock_write_iter+0x258/0x330
[ 92.871554][ T5840] vfs_write+0x548/0xa90
[ 92.875800][ T5840] ksys_write+0x145/0x250
[ 92.880130][ T5840]
[ 92.882456][ T5840] Memory state around the buggy address:
[ 92.888084][ T5840] ffff888024798900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 92.896153][ T5840] ffff888024798980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 92.904215][ T5840] >ffff888024798a00: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
[ 92.912274][ T5840] ^
[ 92.917385][ T5840] ffff888024798a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 92.925446][ T5840] ffff888024798b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 92.933513][ T5840] ==================================================================
[ 92.941842][ T5840] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 92.949065][ T5840] CPU: 0 UID: 0 PID: 5840 Comm: syz-executor138 Not tainted 6.15.0-rc7-next-20250523-syzkaller #0 PREEMPT(full)
[ 92.960997][ T5840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 92.971099][ T5840] Call Trace:
[ 92.974444][ T5840]
[ 92.977422][ T5840] dump_stack_lvl+0x99/0x250
[ 92.982049][ T5840] ? __asan_memcpy+0x40/0x70
[ 92.986767][ T5840] ? __pfx_dump_stack_lvl+0x10/0x10
[ 92.992177][ T5840] ? __pfx__printk+0x10/0x10
[ 92.996809][ T5840] panic+0x2db/0x790
[ 93.000746][ T5840] ? __pfx_panic+0x10/0x10
[ 93.005210][ T5840] ? _raw_spin_unlock_irqrestore+0xfd/0x110
[ 93.011130][ T5840] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 93.017488][ T5840] ? print_memory_metadata+0x314/0x400
[ 93.023167][ T5840] ? build_sit_entries+0x1b0c/0x1f80
[ 93.028490][ T5840] check_panic_on_warn+0x89/0xb0
[ 93.033476][ T5840] ? build_sit_entries+0x1b0c/0x1f80
[ 93.038797][ T5840] end_report+0x78/0x160
[ 93.043080][ T5840] kasan_report+0x129/0x150
[ 93.047631][ T5840] ? build_sit_entries+0x1b0c/0x1f80
[ 93.053021][ T5840] build_sit_entries+0x1b0c/0x1f80
[ 93.058172][ T5840] ? __pfx_build_sit_entries+0x10/0x10
[ 93.063657][ T5840] f2fs_build_segment_manager+0x3112/0x49f0
[ 93.069565][ T5840] ? f2fs_fill_super+0x45bc/0x6c80
[ 93.074698][ T5840] f2fs_fill_super+0x45bc/0x6c80
[ 93.079680][ T5840] mount_bdev+0x211/0x2c0
[ 93.084021][ T5840] ? __pfx_f2fs_fill_super+0x10/0x10
[ 93.089332][ T5840] ? __pfx_mount_bdev+0x10/0x10
[ 93.094197][ T5840] ? rcu_is_watching+0x15/0xb0
[ 93.098981][ T5840] legacy_get_tree+0xfd/0x1a0
[ 93.103666][ T5840] ? __pfx_f2fs_mount+0x10/0x10
[ 93.108531][ T5840] vfs_get_tree+0x92/0x2b0
[ 93.112972][ T5840] do_new_mount+0x24a/0xa40
[ 93.117482][ T5840] __se_sys_mount+0x317/0x410
[ 93.122182][ T5840] ? __pfx___se_sys_mount+0x10/0x10
[ 93.127392][ T5840] ? rcu_is_watching+0x15/0xb0
[ 93.132160][ T5840] ? __x64_sys_mount+0x20/0xc0
[ 93.137469][ T5840] do_syscall_64+0xfa/0x3b0
[ 93.142001][ T5840] ? lockdep_hardirqs_on+0x9c/0x150
[ 93.147220][ T5840] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.153305][ T5840] ? clear_bhb_loop+0x60/0xb0
[ 93.157998][ T5840] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.163985][ T5840] RIP: 0033:0x7ff3b36f7e6a
[ 93.168409][ T5840] 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
[ 93.188034][ T5840] RSP: 002b:00007ffc20c3a528 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[ 93.196505][ T5840] RAX: ffffffffffffffda RBX: 00007ffc20c3a540 RCX: 00007ff3b36f7e6a
[ 93.204493][ T5840] RDX: 0000200000020440 RSI: 0000200000020480 RDI: 00007ffc20c3a540
[ 93.212479][ T5840] RBP: 0000200000020480 R08: 00007ffc20c3a580 R09: 0000000000020419
[ 93.220464][ T5840] R10: 0000000000000000 R11: 0000000000000286 R12: 0000200000020440
[ 93.228454][ T5840] R13: 00007ffc20c3a580 R14: 0000000000000003 R15: 0000000000000000
[ 93.236718][ T5840]
[ 93.240015][ T5840] Kernel Offset: disabled
[ 93.244351][ T5840] Rebooting in 86400 seconds..