Warning: Permanently added '10.128.10.5' (ED25519) to the list of known hosts. [+] open /dev/loop-control successful. [+] LOOP_CTL_GET_FREE successful. [+] memfd_create successful. [+] ftruncate successful. [+] pthread_create t1 successful. [+] pthread_create t2 successful. [ 50.820936][ T30] audit: type=1400 audit(1791937525.133:184): avc: denied { read write } for pid=3644 comm="syz-executor296" name="loop-control" dev="devtmpfs" ino=99 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 50.821082][ T30] audit: type=1400 audit(1791937525.133:185): avc: denied { open } for pid=3644 comm="syz-executor296" path="/dev/loop-control" dev="devtmpfs" ino=99 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 50.821618][ T30] audit: type=1400 audit(1791937525.133:186): avc: denied { ioctl } for pid=3644 comm="syz-executor296" path="/dev/loop-control" dev="devtmpfs" ino=99 ioctlcmd=0x4c82 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 50.822352][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.848249][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.902915][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.903436][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.931211][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.931619][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.932082][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.932469][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.960197][ T3646] loop0: detected capacity change from 0 to 2048 [ 50.960583][ T3646] loop0: detected capacity change from 0 to 2048 [ 52.883232][ T3646] ================================================================== [ 52.883264][ T3646] BUG: KCSAN: data-race in bdev_statx / queue_limits_commit_update [ 52.883298][ T3646] [ 52.883306][ T3646] read to 0xffff88810230a450 of 4 bytes by task 3645 on cpu 1: [ 52.883327][ T3646] bdev_statx+0x297/0x2d0 [ 52.883349][ T3646] vfs_getattr_nosec+0x1b6/0x1e0 [ 52.883379][ T3646] __se_sys_newfstat+0x96/0x460 [ 52.883410][ T3646] __x64_sys_newfstat+0x31/0x40 [ 52.883443][ T3646] x64_sys_call+0x1b5f/0x2550 [ 52.883469][ T3646] do_syscall_64+0x112/0x360 [ 52.883497][ T3646] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 52.883528][ T3646] [ 52.883537][ T3646] write to 0xffff88810230a410 of 192 bytes by task 3646 on cpu 0: [ 52.883560][ T3646] queue_limits_commit_update+0x4b/0x160 [ 52.883584][ T3646] loop_configure+0x78a/0x9c0 [ 52.883615][ T3646] lo_ioctl+0x5a1/0x1430 [ 52.883646][ T3646] blkdev_ioctl+0x387/0x460 [ 52.883668][ T3646] __se_sys_ioctl+0xce/0x140 [ 52.883699][ T3646] __x64_sys_ioctl+0x43/0x50 [ 52.883730][ T3646] x64_sys_call+0x239d/0x2550 [ 52.883763][ T3646] do_syscall_64+0x112/0x360 [ 52.883796][ T3646] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 52.883825][ T3646] [ 52.883831][ T3646] Reported by Kernel Concurrency Sanitizer on: [ 52.883869][ T3646] CPU: 0 UID: 0 PID: 3646 Comm: syz-executor296 Not tainted syzkaller #0 PREEMPT(lazy) [ 52.883897][ T3646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 52.883910][ T3646] ================================================================== [ 53.726195][ T30] audit: type=1400 audit(1791937528.043:187): avc: denied { write } for pid=3650 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 53.779636][ T30] audit: type=1400 audit(1791937528.093:188): avc: denied { write } for pid=3661 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 54.737571][ T30] audit: type=1400 audit(1791937529.053:189): avc: denied { write } for pid=3664 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 54.821130][ T30] audit: type=1400 audit(1791937529.133:190): avc: denied { write } for pid=3675 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 55.056599][ T30] audit: type=1400 audit(1791937529.373:191): avc: denied { write } for pid=3678 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 55.121634][ T30] audit: type=1400 audit(1791937529.433:192): avc: denied { write } for pid=3689 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 55.408114][ T30] audit: type=1400 audit(1791937529.723:193): avc: denied { write } for pid=3692 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 55.823927][ T3646] set_capacity_and_notify: 1997 callbacks suppressed [ 55.823950][ T3646] loop0: detected capacity change from 0 to 2048 [ 55.825579][ T3646] loop0: detected capacity change from 0 to 2048 [ 55.825960][ T3646] loop0: detected capacity change from 0 to 2048 [ 55.826324][ T3646] loop0: detected capacity change from 0 to 2048 [ 55.829855][ T3646] loop0: detected capacity change from 0 to 2048 [ 55.871015][ T3646] loop0: detected capacity change from 0 to 2048 [+] Done. [ 55.871377][ T36