syzkaller login: [ 278.978818][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 286.497394][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 286.593829][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 306.337368][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:51760' (ECDSA) to the list of known hosts. 1970/01/01 00:05:52 fuzzer started 1970/01/01 00:06:07 dialing manager at localhost:46487 [ 374.341398][ T2032] cgroup: Unknown subsys name 'net' [ 375.340343][ T2032] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:06:14 syscalls: 2827 1970/01/01 00:06:15 code coverage: enabled 1970/01/01 00:06:15 comparison tracing: ioctl(KCOV_DISABLE) failed: invalid argument 1970/01/01 00:06:15 extra coverage: enabled 1970/01/01 00:06:15 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:06:15 setuid sandbox: enabled 1970/01/01 00:06:15 namespace sandbox: enabled 1970/01/01 00:06:15 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:06:15 fault injection: enabled 1970/01/01 00:06:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:06:15 net packet injection: enabled 1970/01/01 00:06:15 net device setup: enabled 1970/01/01 00:06:15 concurrency sanitizer: 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fetching corpus: 12775, signal 321169/330578 (executing program) 1970/01/01 00:18:07 fetching corpus: 12825, signal 321389/330582 (executing program) 1970/01/01 00:18:10 fetching corpus: 12874, signal 321690/330584 (executing program) 1970/01/01 00:18:13 fetching corpus: 12924, signal 322031/330584 (executing program) 1970/01/01 00:18:15 fetching corpus: 12974, signal 322426/330587 (executing program) 1970/01/01 00:18:17 fetching corpus: 13024, signal 322833/330587 (executing program) 1970/01/01 00:18:20 fetching corpus: 13074, signal 323311/330587 (executing program) 1970/01/01 00:18:21 fetching corpus: 13122, signal 323555/330589 (executing program) 1970/01/01 00:18:24 fetching corpus: 13172, signal 323918/330589 (executing program) 1970/01/01 00:18:27 fetching corpus: 13222, signal 324322/330589 (executing program) 1970/01/01 00:18:31 fetching corpus: 13272, signal 325217/330589 (executing program) 1970/01/01 00:18:33 fetching corpus: 13322, signal 325446/330589 (executing program) 1970/01/01 00:18:37 fetching corpus: 13372, signal 325762/330589 (executing program) 1970/01/01 00:18:39 fetching corpus: 13422, signal 325993/330589 (executing program) 1970/01/01 00:18:41 fetching corpus: 13472, signal 326269/330589 (executing program) 1970/01/01 00:18:43 fetching corpus: 13522, signal 326517/330589 (executing program) 1970/01/01 00:18:45 fetching corpus: 13572, signal 326825/330589 (executing program) 1970/01/01 00:18:47 fetching corpus: 13622, signal 327199/330589 (executing program) 1970/01/01 00:18:48 fetching corpus: 13631, signal 327545/330589 (executing program) 1970/01/01 00:18:48 fetching corpus: 13631, signal 327545/330589 (executing program) 1970/01/01 00:20:41 starting 2 fuzzer processes 00:20:41 executing program 0: r0 = openat$fb0(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0) ioctl$FBIOBLANK(r0, 0x4611, 0x1) 00:20:41 executing program 1: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000100)='./file0\x00', 0x100000, 0x2, &(0x7f0000000080)=[{&(0x7f0000000180)="200000000002000019000000500100000f000000000000000100000005000000000004000040000020000000dbf4655fdbf4655f0100ffff53ef010001000000dbf4655f000000000000000001000000000000000b0000008000000018000000c20500008b12", 0x66, 0x400}, {&(0x7f0000010100)="000000000000000000000000244b8e9b57f04b59aa229cc218853f95010040", 0x1f, 0x4e0}], 0x0, &(0x7f00000000c0)={[{@errors_remount}]}) [ 1270.348983][ T2052] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1270.629462][ T2052] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1273.050453][ T2053] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1273.232778][ T2053] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1283.832396][ T2052] device hsr_slave_0 entered promiscuous mode [ 1283.900819][ T2052] device hsr_slave_1 entered promiscuous mode [ 1286.508462][ T2053] device hsr_slave_0 entered promiscuous mode [ 1286.531597][ T2053] device hsr_slave_1 entered promiscuous mode [ 1286.573882][ T2053] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 1286.580411][ T2053] Cannot create hsr debugfs directory [ 1288.219389][ C0] ================================================================== [ 1288.223120][ C0] BUG: KASAN: use-after-free in walk_stackframe+0x11c/0x260 [ 1288.225003][ C0] Read of size 8 at addr ffffaf80102ffeb0 by task syz-executor.0/2052 [ 1288.226999][ C0] [ 1288.228820][ C0] CPU: 0 PID: 2052 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1288.230789][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1288.232102][ C0] Call Trace: [ 1288.233167][ C0] [] dump_backtrace+0x2e/0x3c [ 1288.234730][ C0] [] show_stack+0x34/0x40 [ 1288.236607][ C0] [] dump_stack_lvl+0xe4/0x150 [ 1288.238010][ C0] [] print_address_description.constprop.0+0x2a/0x330 [ 1288.239504][ C0] [] kasan_report+0x184/0x1e0 [ 1288.240781][ C0] [] __asan_load8+0x6e/0x96 [ 1288.242099][ C0] [] walk_stackframe+0x11c/0x260 [ 1288.243423][ C0] [] arch_stack_walk+0x2c/0x3c [ 1288.245009][ C0] [] stack_trace_save+0xa6/0xd8 [ 1288.246356][ C0] [] kasan_save_stack+0x2c/0x58 [ 1288.247884][ C0] [ 1288.248681][ C0] The buggy address belongs to the page: [ 1288.250099][ C0] page:ffffaf807aad67b8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x904ff [ 1288.251654][ C0] flags: 0x9000000000(section=18|node=0|zone=0) [ 1288.254097][ C0] raw: 0000009000000000 0000000000000000 ffffaf807aad67c0 0000000000000000 [ 1288.256287][ C0] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1288.257594][ C0] raw: 00000000000007ff [ 1288.258531][ C0] page dumped because: kasan: bad access detected [ 1288.259762][ C0] page_owner tracks the page as freed [ 1288.260727][ C0] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 49, ts 288813402500, free_ts 1284370845600 [ 1288.263245][ C0] __set_page_owner+0x48/0x136 [ 1288.264532][ C0] post_alloc_hook+0xd0/0x10a [ 1288.265768][ C0] get_page_from_freelist+0x8da/0x12d8 [ 1288.266935][ C0] __alloc_pages+0x150/0x3b6 [ 1288.268050][ C0] alloc_pages+0x132/0x2a6 [ 1288.269207][ C0] alloc_slab_page.constprop.0+0xc2/0xfa [ 1288.270404][ C0] new_slab+0x76/0x2cc [ 1288.271456][ C0] ___slab_alloc+0x56e/0x918 [ 1288.272655][ C0] __slab_alloc.constprop.0+0x50/0x8c [ 1288.273855][ C0] __kmalloc_node_track_caller+0x26c/0x362 [ 1288.275664][ C0] __alloc_skb+0xee/0x2e4 [ 1288.276864][ C0] __napi_alloc_skb+0x72/0x214 [ 1288.277962][ C0] page_to_skb+0x16e/0x70e [ 1288.279149][ C0] receive_buf+0xa20/0x3e50 [ 1288.280303][ C0] virtnet_poll+0x39c/0x986 [ 1288.281521][ C0] __napi_poll+0x7c/0x358 [ 1288.283393][ C0] page last free stack trace: [ 1288.284349][ C0] __reset_page_owner+0x4a/0xea [ 1288.286070][ C0] free_pcp_prepare+0x29c/0x45e [ 1288.287354][ C0] free_unref_page+0x6a/0x31e [ 1288.289021][ C0] __free_pages+0xe2/0x112 [ 1288.290237][ C0] __free_slab+0x122/0x27c [ 1288.291381][ C0] discard_slab+0x4c/0x7a [ 1288.293022][ C0] __slab_free+0x20a/0x29c [ 1288.294257][ C0] ___cache_free+0x17c/0x354 [ 1288.295722][ C0] qlist_free_all+0x7c/0x132 [ 1288.296909][ C0] kasan_quarantine_reduce+0x14c/0x1c8 [ 1288.298115][ C0] __kasan_slab_alloc+0x5c/0x98 [ 1288.299293][ C0] kmem_cache_alloc+0x338/0x3de [ 1288.300524][ C0] __kernfs_new_node+0xfc/0x5f2 [ 1288.301746][ C0] kernfs_new_node+0x66/0xbe [ 1288.302792][ C0] __kernfs_create_file+0x4e/0x1e8 [ 1288.303961][ C0] sysfs_add_file_mode_ns+0x138/0x254 [ 1288.305653][ C0] [ 1288.306428][ C0] Memory state around the buggy address: [ 1288.307767][ C0] ffffaf80102ffd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1288.309360][ C0] ffffaf80102ffe00: 00 00 00 00 ff ff ff ff 00 00 00 00 00 00 00 00 [ 1288.310771][ C0] >ffffaf80102ffe80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 1288.311950][ C0] ^ [ 1288.313210][ C0] ffffaf80102fff00: f1 f1 f1 f1 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 [ 1288.315183][ C0] ffffaf80102fff80: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 [ 1288.317288][ C0] ================================================================== [ 1288.318518][ C0] Disabling lock debugging due to kernel taint [ 1288.327240][ T2052] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 1288.328756][ T2052] CPU: 0 PID: 2052 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1288.330134][ T2052] Hardware name: riscv-virtio,qemu (DT) [ 1288.330770][ T2052] Call Trace: [ 1288.331263][ T2052] [] dump_backtrace+0x2e/0x3c [ 1288.332190][ T2052] [] show_stack+0x34/0x40 [ 1288.333049][ T2052] [] dump_stack_lvl+0xe4/0x150 [ 1288.333957][ T2052] [] dump_stack+0x1c/0x24 [ 1288.335467][ T2052] [] panic+0x24a/0x634 [ 1288.336415][ T2052] [] schedule+0x0/0x14c [ 1288.337244][ T2052] [] preempt_schedule_common+0x4e/0xde [ 1288.338053][ T2052] [] preempt_schedule+0x34/0x36 [ 1288.338819][ T2052] [] _raw_spin_unlock_irqrestore+0x8c/0x98 [ 1288.339642][ T2052] [] __stack_depot_save+0x384/0x4b2 [ 1288.340506][ T2052] [] stack_depot_save+0xe/0x18 [ 1288.341313][ T2052] [] save_stack+0x122/0x16c [ 1288.342058][ T2052] [] __set_page_owner+0x48/0x136 [ 1288.342825][ T2052] [] post_alloc_hook+0xd0/0x10a [ 1288.343630][ T2052] [] get_page_from_freelist+0x8da/0x12d8 [ 1288.344407][ T2052] [] __alloc_pages+0x150/0x3b6 [ 1288.345285][ T2052] [] alloc_pages+0x132/0x2a6 [ 1288.346187][ T2052] [] alloc_slab_page.constprop.0+0xc2/0xfa [ 1288.347131][ T2052] [] new_slab+0x76/0x2cc [ 1288.347952][ T2052] [] ___slab_alloc+0x56e/0x918 [ 1288.348849][ T2052] [] __slab_alloc.constprop.0+0x50/0x8c [ 1288.349664][ T2052] [] kmem_cache_alloc+0x39c/0x3de [ 1288.350404][ T2052] [] __kernfs_new_node+0xfc/0x5f2 [ 1288.351232][ T2052] [] kernfs_new_node+0x66/0xbe [ 1288.351977][ T2052] [] kernfs_create_link+0x78/0x142 [ 1288.352744][ T2052] [] sysfs_do_create_link_sd+0x84/0x12a [ 1288.353471][ T2052] [] sysfs_create_link+0x52/0x92 [ 1288.354208][ T2052] [] __netdev_adjacent_dev_insert+0x4f2/0x6ba [ 1288.355970][ T2052] [] __netdev_upper_dev_link+0x31c/0x560 [ 1288.356984][ T2052] [] netdev_upper_dev_link+0x9e/0xce [ 1288.358049][ T2052] [] register_vlan_dev+0x22c/0x578 [ 1288.358951][ T2052] [] vlan_newlink+0x2a6/0x34c [ 1288.359904][ T2052] [] __rtnl_newlink+0xc16/0xfa0 [ 1288.361173][ T2052] [] rtnl_newlink+0x60/0x8c [ 1288.362684][ T2052] [] rtnetlink_rcv_msg+0x338/0x9a0 [ 1288.363715][ T2052] [] netlink_rcv_skb+0xf8/0x2be [ 1288.365090][ T2052] [] rtnetlink_rcv+0x26/0x30 [ 1288.366214][ T2052] [] netlink_unicast+0x40e/0x5fe [ 1288.367005][ T2052] [] netlink_sendmsg+0x4e0/0x994 [ 1288.368041][ T2052] [] sock_sendmsg+0xa0/0xc4 [ 1288.368936][ T2052] [] __sys_sendto+0x1f2/0x2e0 [ 1288.369981][ T2052] [] sys_sendto+0x3e/0x52 [ 1288.370747][ T2052] [] ret_from_syscall+0x0/0x2 [ 1288.372062][ T2052] SMP: stopping secondary CPUs [ 1288.374019][ T2052] Rebooting in 86400 seconds.. VM DIAGNOSIS: 19:16:35 Registers: info registers vcpu 0 pc ffffffff80112472 mhartid 0000000000000000 mstatus 00000000000000a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff8000f97e sepc ffffffff801165e0 mcause 0000000000000009 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff8176b8f4 x2/sp ffffaf800b08ba70 x3/gp ffffffff85863ac0 x4/tp ffffaf800b64c8c0 x5/t0 ffffaf800f0db530 x6/t1 34877a37d311ee00 x7/t2 0000000000000001 x8/s0 ffffaf800b08bbb0 x9/s1 0000000000001000 x10/a0 0000000000000000 x11/a1 00000000000f0000 x12/a2 0000000000000002 x13/a3 ffffffff8176bb0c x14/a4 0000000000000000 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffff8176b8f4 x18/s2 0000000000000000 x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 ffffffff850d46d8 x22/s6 ffffffff850d46d8 x23/s7 0000000000000000 x24/s8 ffffaf800b64d330 x25/s9 ffffffff8176b8f4 x26/s10 1ffff5f001611750 x27/s11 ffffffff8588a420 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 1ffff5f00161172c x31/t6 0000000000040000 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffff80474736 mhartid 0000000000000001 mstatus 00000000000000a0 mip 00000000000000a0 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80475986 sepc ffffffff80200f00 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80474724 x2/sp ffffaf80102ffd70 x3/gp ffffffff85863ac0 x4/tp ffffaf800e21e100 x5/t0 ffffffff86bcb657 x6/t1 fffff5ef0b53910c x7/t2 0000000000000000 x8/s0 ffffaf80102ffd80 x9/s1 ffffaf80102ffeb0 x10/a0 00000000904ffeb0 x11/a1 00000000000f0000 x12/a2 00000000000904ff x13/a3 0000000000000012 x14/a4 ffffaf800e21e100 x15/a5 ffffaf807ca00000 x16/a6 0000000000f00000 x17/a7 ffffaf805a9c8863 x18/s2 ffffaf80102ffeb0 x19/s3 ffffffff8000a052 x20/s4 0000000000000000 x21/s5 ffffffff85863560 x22/s6 0000000000003fff x23/s7 ffffaf80102ffe50 x24/s8 0000000000400000 x25/s9 ffffffffffffc000 x26/s10 ffffaf80102fff20 x27/s11 0000000000000008 x28/t3 fffffffff3f3f300 x29/t4 fffff5ef0b53910c x30/t5 fffff5ef0b53910d x31/t6 ffffaf80102ff8b8 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000