Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.692376][ T5944] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5944 'syz-executor413' [ 41.696986][ T5944] loop0: detected capacity change from 0 to 64 [ 41.725832][ T5949] ------------[ cut here ]------------ [ 41.727374][ T5949] WARNING: CPU: 1 PID: 5949 at fs/buffer.c:1124 mark_buffer_dirty+0x3f4/0x710 [ 41.729490][ T5949] Modules linked in: [ 41.730538][ T5949] CPU: 1 PID: 5949 Comm: syz-executor413 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 41.732982][ T5949] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 41.735394][ T5949] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 41.737388][ T5949] pc : mark_buffer_dirty+0x3f4/0x710 [ 41.738732][ T5949] lr : mark_buffer_dirty+0x3f4/0x710 [ 41.740097][ T5949] sp : ffff80001e2e68c0 [ 41.741091][ T5949] x29: ffff80001e2e68c0 x28: ffff0001b2c26200 x27: ffff0000df1e4800 [ 41.743088][ T5949] x26: ffff0000e00f4530 x25: ffff0000c9472018 x24: ffff0000e014a000 [ 41.745150][ T5949] x23: ffff0000e0149ae0 x22: ffff0000c9472160 x21: ffff0000e00f4540 [ 41.747164][ T5949] x20: 0000000000000010 x19: ffff0000e014a000 x18: 0000000000000180 [ 41.749144][ T5949] x17: ffff800015cdd000 x16: ffff8000123b0330 x15: 0000000000000000 [ 41.751266][ T5949] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000001 [ 41.753375][ T5949] x11: ff80800008b51d0c x10: 0000000000000000 x9 : ffff800008b51d0c [ 41.755408][ T5949] x8 : ffff0000c8e78000 x7 : 0000000000000000 x6 : 0000000000000000 [ 41.757525][ T5949] x5 : ffff0000df1e4a00 x4 : ffff0001b2c26400 x3 : ffff800008b51944 [ 41.759536][ T5949] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 [ 41.761587][ T5949] Call trace: [ 41.762417][ T5949] mark_buffer_dirty+0x3f4/0x710 [ 41.763644][ T5949] bfs_get_block+0x6f4/0x9b4 [ 41.764854][ T5949] __block_write_begin_int+0x3ec/0x1640 [ 41.766245][ T5949] block_write_begin+0x98/0x11c [ 41.767493][ T5949] bfs_write_begin+0x48/0xec [ 41.768759][ T5949] generic_perform_write+0x278/0x55c [ 41.770103][ T5949] __generic_file_write_iter+0x168/0x388 [ 41.771559][ T5949] generic_file_write_iter+0xb8/0x2b4 [ 41.772984][ T5949] __kernel_write_iter+0x264/0x5f8 [ 41.774293][ T5949] __kernel_write+0x11c/0x174 [ 41.775526][ T5949] dump_emit+0x248/0x358 [ 41.776553][ T5949] elf_core_dump+0x2940/0x3760 [ 41.777694][ T5949] do_coredump+0x14d8/0x235c [ 41.778951][ T5949] get_signal+0xfe8/0x159c [ 41.780029][ T5949] do_notify_resume+0x338/0x3c90 [ 41.781314][ T5949] el0_da+0xb8/0x184 [ 41.782299][ T5949] el0t_64_sync_handler+0xcc/0xf0 [ 41.783573][ T5949] el0t_64_sync+0x190/0x194 [ 41.784706][ T5949] irq event stamp: 868 [ 41.785752][ T5949] hardirqs last enabled at (867): [] __find_get_block+0xa20/0xe8c [ 41.788159][ T5949] hardirqs last disabled at (868): [] el1_dbg+0x24/0x80 [ 41.790369][ T5949] softirqs last enabled at (332): [] local_bh_enable+0x10/0x34 [ 41.792749][ T5949] softirqs last disabled at (330): [] local_bh_disable+0x10/0x34 [ 41.795128][ T5949] ---[ end trace 0000000000000000 ]---