last executing test programs: 899.906717ms ago: executing program 2 (id=33): write(0xffffffffffffffff, &(0x7f0000000000), 0x0) 899.783628ms ago: executing program 2 (id=35): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/binder', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/binder', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/binder', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/binder', 0x800, 0x0) 881.915858ms ago: executing program 2 (id=40): syz_init_net_socket$nl_rdma(0x10, 0x3, 0x14) 868.806029ms ago: executing program 2 (id=48): lchown(&(0x7f0000000000), 0x0, 0x0) 868.520029ms ago: executing program 2 (id=52): clone3(&(0x7f0000000000), 0x0) exit(0x0) 855.15821ms ago: executing program 2 (id=56): pause() 331.03081ms ago: executing program 3 (id=294): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/random', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/random', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/random', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/random', 0x800, 0x0) 330.93397ms ago: executing program 3 (id=295): migrate_pages(0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000)) 311.461961ms ago: executing program 3 (id=297): openat(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/debug/damon/monitor_on', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/sys/kernel/debug/damon/monitor_on', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/sys/kernel/debug/damon/monitor_on', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/sys/kernel/debug/damon/monitor_on', 0x800, 0x0) 310.946571ms ago: executing program 3 (id=299): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/trusty-ipc-dev0', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/trusty-ipc-dev0', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/trusty-ipc-dev0', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/trusty-ipc-dev0', 0x800, 0x0) 294.723263ms ago: executing program 3 (id=305): socket$inet6_dccp(0xa, 0x6, 0x0) 246.901195ms ago: executing program 3 (id=320): rt_sigreturn() 42.441787ms ago: executing program 4 (id=378): syz_init_net_socket$llc(0x1a, 0x1, 0x0) 42.374107ms ago: executing program 4 (id=379): syz_open_dev$audion(&(0x7f0000000040), 0x0, 0x0) syz_open_dev$audion(&(0x7f0000000080), 0x0, 0x1) syz_open_dev$audion(&(0x7f00000000c0), 0x0, 0x2) syz_open_dev$audion(&(0x7f0000000100), 0x0, 0x800) syz_open_dev$audion(&(0x7f0000000140), 0x1, 0x0) syz_open_dev$audion(&(0x7f0000000180), 0x1, 0x1) syz_open_dev$audion(&(0x7f00000001c0), 0x1, 0x2) syz_open_dev$audion(&(0x7f0000000200), 0x1, 0x800) syz_open_dev$audion(&(0x7f0000000240), 0x2, 0x0) syz_open_dev$audion(&(0x7f0000000280), 0x2, 0x1) syz_open_dev$audion(&(0x7f00000002c0), 0x2, 0x2) syz_open_dev$audion(&(0x7f0000000300), 0x2, 0x800) syz_open_dev$audion(&(0x7f0000000340), 0x3, 0x0) syz_open_dev$audion(&(0x7f0000000380), 0x3, 0x1) syz_open_dev$audion(&(0x7f00000003c0), 0x3, 0x2) syz_open_dev$audion(&(0x7f0000000400), 0x3, 0x800) syz_open_dev$audion(&(0x7f0000000440), 0x4, 0x0) syz_open_dev$audion(&(0x7f0000000480), 0x4, 0x1) syz_open_dev$audion(&(0x7f00000004c0), 0x4, 0x2) syz_open_dev$audion(&(0x7f0000000500), 0x4, 0x800) 42.119087ms ago: executing program 0 (id=380): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/tty', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/tty', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/tty', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/tty', 0x800, 0x0) 41.936677ms ago: executing program 0 (id=381): openat(0xffffffffffffff9c, &(0x7f0000000040)='/sys/fs/smackfs/logging', 0x2, 0x0) 27.717288ms ago: executing program 1 (id=382): socket$inet_smc(0x2b, 0x1, 0x0) 27.537368ms ago: executing program 0 (id=383): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/vcsa', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/vcsa', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/vcsa', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/vcsa', 0x800, 0x0) 27.411818ms ago: executing program 4 (id=384): openat(0xffffffffffffff9c, &(0x7f0000000040)='/selinux/status', 0x0, 0x0) 27.196648ms ago: executing program 4 (id=385): syz_open_dev$dricontrol(&(0x7f0000000040), 0x0, 0x0) syz_open_dev$dricontrol(&(0x7f0000000080), 0x0, 0x1) syz_open_dev$dricontrol(&(0x7f00000000c0), 0x0, 0x2) syz_open_dev$dricontrol(&(0x7f0000000100), 0x0, 0x800) syz_open_dev$dricontrol(&(0x7f0000000140), 0x1, 0x0) syz_open_dev$dricontrol(&(0x7f0000000180), 0x1, 0x1) syz_open_dev$dricontrol(&(0x7f00000001c0), 0x1, 0x2) syz_open_dev$dricontrol(&(0x7f0000000200), 0x1, 0x800) syz_open_dev$dricontrol(&(0x7f0000000240), 0x2, 0x0) syz_open_dev$dricontrol(&(0x7f0000000280), 0x2, 0x1) syz_open_dev$dricontrol(&(0x7f00000002c0), 0x2, 0x2) syz_open_dev$dricontrol(&(0x7f0000000300), 0x2, 0x800) syz_open_dev$dricontrol(&(0x7f0000000340), 0x3, 0x0) syz_open_dev$dricontrol(&(0x7f0000000380), 0x3, 0x1) syz_open_dev$dricontrol(&(0x7f00000003c0), 0x3, 0x2) syz_open_dev$dricontrol(&(0x7f0000000400), 0x3, 0x800) syz_open_dev$dricontrol(&(0x7f0000000440), 0x4, 0x0) syz_open_dev$dricontrol(&(0x7f0000000480), 0x4, 0x1) syz_open_dev$dricontrol(&(0x7f00000004c0), 0x4, 0x2) syz_open_dev$dricontrol(&(0x7f0000000500), 0x4, 0x800) 26.965488ms ago: executing program 0 (id=386): pkey_mprotect(0x0, 0x0, 0x0, 0xffffffffffffffff) 26.901078ms ago: executing program 1 (id=387): socket$nl_generic(0x10, 0x3, 0x10) 1.21756ms ago: executing program 4 (id=388): getdents64(0xffffffffffffffff, &(0x7f0000000000), 0x0) 935.49µs ago: executing program 1 (id=389): newfstatat(0xffffffffffffff9c, &(0x7f0000000000), &(0x7f0000000000), 0x0) 824.72µs ago: executing program 4 (id=390): syz_open_dev$evdev(&(0x7f0000000040), 0x0, 0x0) syz_open_dev$evdev(&(0x7f0000000080), 0x0, 0x1) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x2) syz_open_dev$evdev(&(0x7f0000000100), 0x0, 0x800) syz_open_dev$evdev(&(0x7f0000000140), 0x1, 0x0) syz_open_dev$evdev(&(0x7f0000000180), 0x1, 0x1) syz_open_dev$evdev(&(0x7f00000001c0), 0x1, 0x2) syz_open_dev$evdev(&(0x7f0000000200), 0x1, 0x800) syz_open_dev$evdev(&(0x7f0000000240), 0x2, 0x0) syz_open_dev$evdev(&(0x7f0000000280), 0x2, 0x1) syz_open_dev$evdev(&(0x7f00000002c0), 0x2, 0x2) syz_open_dev$evdev(&(0x7f0000000300), 0x2, 0x800) syz_open_dev$evdev(&(0x7f0000000340), 0x3, 0x0) syz_open_dev$evdev(&(0x7f0000000380), 0x3, 0x1) syz_open_dev$evdev(&(0x7f00000003c0), 0x3, 0x2) syz_open_dev$evdev(&(0x7f0000000400), 0x3, 0x800) syz_open_dev$evdev(&(0x7f0000000440), 0x4, 0x0) syz_open_dev$evdev(&(0x7f0000000480), 0x4, 0x1) syz_open_dev$evdev(&(0x7f00000004c0), 0x4, 0x2) syz_open_dev$evdev(&(0x7f0000000500), 0x4, 0x800) 642.31µs ago: executing program 1 (id=391): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ubi_ctrl', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/ubi_ctrl', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ubi_ctrl', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ubi_ctrl', 0x800, 0x0) 571.53µs ago: executing program 1 (id=392): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/sgx_provision', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/sgx_provision', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/sgx_provision', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/sgx_provision', 0x800, 0x0) 536.03µs ago: executing program 0 (id=393): pidfd_getfd(0xffffffffffffffff, 0xffffffffffffffff, 0x0) 352.41µs ago: executing program 1 (id=394): syz_open_dev$vbi(&(0x7f0000000040), 0x0, 0x0) syz_open_dev$vbi(&(0x7f0000000080), 0x0, 0x1) syz_open_dev$vbi(&(0x7f00000000c0), 0x0, 0x2) syz_open_dev$vbi(&(0x7f0000000100), 0x0, 0x800) 0s ago: executing program 0 (id=395): syz_open_dev$vim2m(&(0x7f0000000040), 0x0, 0x0) syz_open_dev$vim2m(&(0x7f0000000080), 0x0, 0x1) syz_open_dev$vim2m(&(0x7f00000000c0), 0x0, 0x2) syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x800) syz_open_dev$vim2m(&(0x7f0000000140), 0x1, 0x0) syz_open_dev$vim2m(&(0x7f0000000180), 0x1, 0x1) syz_open_dev$vim2m(&(0x7f00000001c0), 0x1, 0x2) syz_open_dev$vim2m(&(0x7f0000000200), 0x1, 0x800) syz_open_dev$vim2m(&(0x7f0000000240), 0x2, 0x0) syz_open_dev$vim2m(&(0x7f0000000280), 0x2, 0x1) syz_open_dev$vim2m(&(0x7f00000002c0), 0x2, 0x2) syz_open_dev$vim2m(&(0x7f0000000300), 0x2, 0x800) syz_open_dev$vim2m(&(0x7f0000000340), 0x3, 0x0) syz_open_dev$vim2m(&(0x7f0000000380), 0x3, 0x1) syz_open_dev$vim2m(&(0x7f00000003c0), 0x3, 0x2) syz_open_dev$vim2m(&(0x7f0000000400), 0x3, 0x800) syz_open_dev$vim2m(&(0x7f0000000440), 0x4, 0x0) syz_open_dev$vim2m(&(0x7f0000000480), 0x4, 0x1) syz_open_dev$vim2m(&(0x7f00000004c0), 0x4, 0x2) syz_open_dev$vim2m(&(0x7f0000000500), 0x4, 0x800) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.21' (ED25519) to the list of known hosts. [ 28.267911][ T28] audit: type=1400 audit(1770965077.874:62): avc: denied { mounton } for pid=3299 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2022 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 28.290935][ T28] audit: type=1400 audit(1770965077.904:63): avc: denied { mount } for pid=3299 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 28.291691][ T3299] cgroup: Unknown subsys name 'net' [ 28.318539][ T28] audit: type=1400 audit(1770965077.924:64): avc: denied { unmount } for pid=3299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 28.439251][ T3299] cgroup: Unknown subsys name 'cpuset' [ 28.445317][ T3299] cgroup: Unknown subsys name 'rlimit' [ 28.577781][ T28] audit: type=1400 audit(1770965078.184:65): avc: denied { setattr } for pid=3299 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=142 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 28.607944][ T28] audit: type=1400 audit(1770965078.184:66): avc: denied { create } for pid=3299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.628641][ T28] audit: type=1400 audit(1770965078.184:67): avc: denied { write } for pid=3299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.634726][ T3302] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 28.649189][ T28] audit: type=1400 audit(1770965078.184:68): avc: denied { read } for pid=3299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 28.677947][ T28] audit: type=1400 audit(1770965078.184:69): avc: denied { mounton } for pid=3299 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 28.693216][ T3299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 28.702711][ T28] audit: type=1400 audit(1770965078.184:70): avc: denied { mount } for pid=3299 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 28.734711][ T28] audit: type=1400 audit(1770965078.214:71): avc: denied { read } for pid=3037 comm="dhcpcd" scontext=system_u:system_r:dhcpc_t tcontext=system_u:system_r:dhcpc_t tclass=netlink_kobject_uevent_socket permissive=1 [ 29.614474][ T3337] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 29.993138][ T3530] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 30.562053][ T3655] ================================================================== [ 30.570168][ T3655] BUG: KCSAN: data-race in __percpu_counter_limited_add / __percpu_counter_limited_add [ 30.579804][ T3655] [ 30.582126][ T3655] write to 0xffff88810d329910 of 8 bytes by task 3501 on cpu 0: [ 30.589745][ T3655] __percpu_counter_limited_add+0x38c/0x400 [ 30.595639][ T3655] shmem_inode_acct_blocks+0xf4/0x230 [ 30.601019][ T3655] shmem_get_folio_gfp+0x5b2/0xd60 [ 30.606126][ T3655] shmem_write_begin+0xfc/0x1f0 [ 30.610982][ T3655] generic_perform_write+0x183/0x490 [ 30.616278][ T3655] shmem_file_write_iter+0xc5/0xf0 [ 30.621406][ T3655] __kernel_write_iter+0x319/0x590 [ 30.626537][ T3655] dump_user_range+0xa7d/0xdb0 [ 30.631306][ T3655] elf_core_dump+0x21a2/0x2330 [ 30.636072][ T3655] coredump_write+0xacf/0xdf0 [ 30.640742][ T3655] vfs_coredump+0x26c7/0x3130 [ 30.645402][ T3655] get_signal+0xd7b/0xf60 [ 30.649732][ T3655] arch_do_signal_or_restart+0x96/0x450 [ 30.655276][ T3655] irqentry_exit+0xf7/0x520 [ 30.659766][ T3655] asm_exc_page_fault+0x26/0x30 [ 30.664604][ T3655] [ 30.666911][ T3655] read to 0xffff88810d329910 of 8 bytes by task 3655 on cpu 1: [ 30.674434][ T3655] __percpu_counter_limited_add+0xc0/0x400 [ 30.680223][ T3655] shmem_inode_acct_blocks+0xf4/0x230 [ 30.685585][ T3655] shmem_get_folio_gfp+0x5b2/0xd60 [ 30.690677][ T3655] shmem_write_begin+0xfc/0x1f0 [ 30.695507][ T3655] generic_perform_write+0x183/0x490 [ 30.700776][ T3655] shmem_file_write_iter+0xc5/0xf0 [ 30.705868][ T3655] __kernel_write_iter+0x319/0x590 [ 30.710965][ T3655] dump_user_range+0xa7d/0xdb0 [ 30.715709][ T3655] elf_core_dump+0x21a2/0x2330 [ 30.720456][ T3655] coredump_write+0xacf/0xdf0 [ 30.725116][ T3655] vfs_coredump+0x26c7/0x3130 [ 30.729773][ T3655] get_signal+0xd7b/0xf60 [ 30.734089][ T3655] arch_do_signal_or_restart+0x96/0x450 [ 30.739622][ T3655] exit_to_user_mode_loop+0x6a/0x6f0 [ 30.744886][ T3655] do_syscall_64+0x249/0x370 [ 30.749458][ T3655] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 30.755332][ T3655] SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 30.757635][ T3655] value changed: 0x0000000000001e8d -> 0x0000000000001eae [ 30.764717][ T3655] [ 30.767028][ T3655] Reported by Kernel Concurrency Sanitizer on: [ 30.773179][ T3655] CPU: 1 UID: 0 PID: 3655 Comm: syz.3.320 Not tainted syzkaller #0 PREEMPT(full) [ 30.782365][ T3655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 [ 30.792413][ T3655] ================================================================== [ 30.992116][ T3655] syz.3.320 (3655) used greatest stack depth: 9856 bytes left