Warning: Permanently added '10.128.1.126' (ED25519) to the list of known hosts. executing program syzkaller login: [ 42.823567][ T3966] ------------[ cut here ]------------ [ 42.824959][ T3966] WARNING: CPU: 0 PID: 3966 at block/genhd.c:592 del_gendisk+0x698/0x72c [ 42.827175][ T3966] Modules linked in: [ 42.828178][ T3966] CPU: 0 PID: 3966 Comm: syz-executor427 Not tainted 5.15.161-syzkaller #0 [ 42.830515][ T3966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 42.833217][ T3966] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 42.835307][ T3966] pc : del_gendisk+0x698/0x72c [ 42.836542][ T3966] lr : del_gendisk+0x698/0x72c [ 42.837825][ T3966] sp : ffff80001afa7bc0 [ 42.838914][ T3966] x29: ffff80001afa7be0 x28: ffff0000daa39b40 x27: 1fffe0001ade6a2a [ 42.841005][ T3966] x26: 1fffe0001913d510 x25: 1ffff000035f4f88 x24: ffff0000c89ea880 [ 42.843172][ T3966] x23: 0000000000000000 x22: ffff0000c89ea8a0 x21: ffff0000c89ea800 [ 42.845331][ T3966] x20: ffff0000cd2a2aa8 x19: 0000000000000240 x18: 0000000000000000 [ 42.847487][ T3966] x17: 0000000000000000 x16: ffff8000082eb0b0 x15: 0000000000004c82 [ 42.849638][ T3966] x14: 1ffff0000292a06a x13: dfff800000000000 x12: 0000000000000001 [ 42.851772][ T3966] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000daa39b40 [ 42.853866][ T3966] x8 : ffff80000a848970 x7 : ffff80000c045e78 x6 : 0000000000000000 [ 42.855988][ T3966] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011a6243c [ 42.858085][ T3966] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 [ 42.860301][ T3966] Call trace: [ 42.861140][ T3966] del_gendisk+0x698/0x72c [ 42.862327][ T3966] loop_control_ioctl+0x4a8/0x62c [ 42.863623][ T3966] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.864972][ T3966] invoke_syscall+0x98/0x2b8 [ 42.866215][ T3966] el0_svc_common+0x138/0x258 [ 42.867375][ T3966] do_el0_svc+0x58/0x14c [ 42.868500][ T3966] el0_svc+0x7c/0x1f0 [ 42.869551][ T3966] el0t_64_sync_handler+0x84/0xe4 [ 42.870932][ T3966] el0t_64_sync+0x1a0/0x1a4 [ 42.872098][ T3966] irq event stamp: 13688 [ 42.873194][ T3966] hardirqs last enabled at (13687): [] kasan_quarantine_put+0xdc/0x204 [ 42.875826][ T3966] hardirqs last disabled at (13688): [] el1_dbg+0x24/0x80 [ 42.878249][ T3966] softirqs last enabled at (13670): [] handle_softirqs+0xb88/0xdbc [ 42.880717][ T3966] softirqs last disabled at (13635): [] __irq_exit_rcu+0x268/0x4d8 [ 42.883274][ T3966] ---[ end trace 1537fbd5b53085f4 ]---