program: r0 = fsopen(&(0x7f0000000240)='ceph\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000340)='source\x00', &(0x7f0000000100)='client.admin@00000000-0000-0000-0000-000000000000.ceph=/\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000600)='mon_addr\x00', &(0x7f0000000000)='127\xd8\xf7\xff\xa3\xe7Q\x94\x17g\xe6t\xf7\'[{.0.0.1:6789\x00\xfa\xaf\xa3*.(\x92\xe0\xf5\xb8\xd43\x80L*\b\xf7]?\xc0w\"@\x03\xadV\x18\x96\xa56\xd9)\xbc\x1b\xeb\xb6M\x02k\xd5\x01\xc0\x96n\x8f\x8fx\xd7\xfdU\xd0\xe1R\'Kf\x12\x93m\x0e,\xa2\xde\x80V\xed\v\xb0\xfcZ\xfc\xb7E8s\xf2\xfe\xa7nwv\xcd\x94$\xc7]\x8f:\xe6D\x1dQ8\xb3\xe5\xe2\xccUd\x0fn\xf9\xa8%co\x8a9a\xb8\xf3\x8d\xcd\x81mV\xbbK\xce\xa4G\x8f5\x9bW\x91\x8a\xd1=x6[Q\x02\x11q_\xad}/\x12\xaae\x91\xe6\x8b\x1c\xba\xd7\xc0\x1aJ(N\xf9\xda\tk\xfe\xcd\x93Jc\xe3[L\xa3\x06_\x8bO\\Y\xackJe\xf3\x88P\xeaw)\x9b\x81s\x8f\x19\xc0\xf5\xf8W\xfajA5F\x8f*\xd9\xe9o\x1d`\xe3\xca\x95\xd6Z\xa5\x12&\x91\x05\x00\x00\x00\x00\x00\x00\x00\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0) [ 183.596881][ T5342] libceph: resolve '127Ø÷ÿ£çQ”gæt÷'[{.0.0.1' (ret=-3): failed [ 183.635588][ T5342] ------------[ cut here ]------------ [ 183.635602][ T5342] kernel BUG at net/ceph/mon_client.c:211! [ 183.644948][ T5342] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 183.650614][ T5342] CPU: 0 UID: 0 PID: 5342 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 183.655106][ T5342] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 183.659677][ T5342] RIP: 0010:__open_session+0x799/0x940 [ 183.662863][ T5342] Code: ca fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c d0 fd ff ff be 04 00 00 00 4c 89 e7 e8 82 0b 88 f6 e9 be fd ff ff e8 48 71 15 f6 90 <0f> 0b 4d 89 ee 48 8b 04 24 42 0f b6 04 38 84 c0 0f 85 2f 01 00 00 [ 183.671040][ T5342] RSP: 0018:ffffc9000dd87ae8 EFLAGS: 00010287 [ 183.673751][ T5342] RAX: ffffffff8bb2f658 RBX: ffff888013364290 RCX: 0000000000100000 [ 183.677182][ T5342] RDX: ffffc9000ee12000 RSI: 0000000000005e11 RDI: 0000000000005e12 [ 183.680662][ T5342] RBP: 00000000ffffffff R08: ffff88803bcc8000 R09: 0000000000000002 [ 183.684116][ T5342] R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000 [ 183.688359][ T5342] R13: ffff888013364400 R14: ffff888013364298 R15: dffffc0000000000 [ 183.691934][ T5342] FS: 00007fe4ec3f56c0(0000) GS:ffff88808ae44000(0000) knlGS:0000000000000000 [ 183.696132][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 183.699594][ T5342] CR2: 00007fe4f01fa6b8 CR3: 00000000417f8000 CR4: 0000000000352ef0 [ 183.703357][ T5342] Call Trace: [ 183.704904][ T5342] [ 183.706295][ T5342] ceph_monc_open_session+0x56/0x1a0 [ 183.708606][ T5342] __ceph_open_session+0x16d/0x640 [ 183.710808][ T5342] ? bdi_register_va+0x58d/0x740 [ 183.718294][ T5342] ? ceph_get_tree+0x885/0x1a40 [ 183.720694][ T5342] ? __pfx___mutex_lock+0x10/0x10 [ 183.722652][ T5342] ? __pfx___ceph_open_session+0x10/0x10 [ 183.724653][ T5342] ? __pfx_woken_wake_function+0x10/0x10 [ 183.726713][ T5342] ? ceph_mdsc_init+0xce5/0xde0 [ 183.728448][ T5342] ceph_get_tree+0xaef/0x1a40 [ 183.730370][ T5342] vfs_get_tree+0x92/0x2a0 [ 183.732298][ T5342] vfs_cmd_create+0xa2/0x200 [ 183.734359][ T5342] __se_sys_fsconfig+0x6b9/0x810 [ 183.736508][ T5342] ? __pfx___se_sys_fsconfig+0x10/0x10 [ 183.738837][ T5342] ? rcu_is_watching+0x16/0xb0 [ 183.740942][ T5342] ? __x64_sys_fsconfig+0x20/0xc0 [ 183.743251][ T5342] do_syscall_64+0x166/0x520 [ 183.745668][ T5342] ? trace_irq_disable+0x3b/0x140 [ 183.748415][ T5342] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 183.751562][ T5342] ? clear_bhb_loop+0x70/0xc0 [ 183.754135][ T5342] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 183.757218][ T5342] RIP: 0033:0x7fe4eff9f559 [ 183.759235][ T5342] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 183.768489][ T5342] RSP: 002b:00007fe4ec3f4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af [ 183.772549][ T5342] RAX: ffffffffffffffda RBX: 00007fe4f0225fa0 RCX: 00007fe4eff9f559 [ 183.775795][ T5342] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003 [ 183.779043][ T5342] RBP: 00007fe4f0036b20 R08: 0000000000000000 R09: 0000000000000000 [ 183.782768][ T5342] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 183.786714][ T5342] R13: 00007fe4f0226038 R14: 00007fe4f0225fa0 R15: 00007ffcfded1ef8 [ 183.790338][ T5342] [ 183.791651][ T5342] Modules linked in: [ 183.793624][ T5342] ---[ end trace 0000000000000000 ]--- [ 183.800139][ T5342] RIP: 0010:__open_session+0x799/0x940 [ 183.800170][ T5342] Code: ca fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c d0 fd ff ff be 04 00 00 00 4c 89 e7 e8 82 0b 88 f6 e9 be fd ff ff e8 48 71 15 f6 90 <0f> 0b 4d 89 ee 48 8b 04 24 42 0f b6 04 38 84 c0 0f 85 2f 01 00 00 [ 183.800182][ T5342] RSP: 0018:ffffc9000dd87ae8 EFLAGS: 00010287 [ 183.800197][ T5342] RAX: ffffffff8bb2f658 RBX: ffff888013364290 RCX: 0000000000100000 [ 183.800206][ T5342] RDX: ffffc9000ee12000 RSI: 0000000000005e11 RDI: 0000000000005e12 [ 183.800214][ T5342] RBP: 00000000ffffffff R08: ffff88803bcc8000 R09: 0000000000000002 [ 183.800222][ T5342] R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000 [ 183.800229][ T5342] R13: ffff888013364400 R14: ffff888013364298 R15: dffffc0000000000 [ 183.800257][ T5342] FS: 00007fe4ec3f56c0(0000) GS:ffff88808ae44000(0000) knlGS:0000000000000000 [ 183.800269][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 183.800279][ T5342] CR2: 00007fe4f01fa6b8 CR3: 00000000417f8000 CR4: 0000000000352ef0 [ 183.800312][ T5342] Kernel panic - not syncing: Fatal exception [ 183.843173][ T5342] Kernel Offset: disabled [ 183.845193][ T5342] Rebooting in 86400 seconds..