syzkaller login: [ 480.557149][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 490.107839][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 490.138235][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 490.167583][ T1859] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:10659' (ECDSA) to the list of known hosts. 1970/01/01 00:09:29 fuzzer started 1970/01/01 00:09:43 dialing manager at localhost:45661 [ 589.188298][ T2032] cgroup: Unknown subsys name 'net' [ 590.400387][ T2032] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:09:50 syscalls: 2918 1970/01/01 00:09:50 code coverage: enabled 1970/01/01 00:09:50 comparison tracing: ioctl(KCOV_DISABLE) failed: invalid argument 1970/01/01 00:09:50 extra coverage: enabled 1970/01/01 00:09:50 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:09:50 setuid sandbox: enabled 1970/01/01 00:09:50 namespace sandbox: enabled 1970/01/01 00:09:50 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:09:50 fault injection: enabled 1970/01/01 00:09:50 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:09:50 net packet injection: enabled 1970/01/01 00:09:50 net device setup: enabled 1970/01/01 00:09:50 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:09:50 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:09:50 NIC VF setup: PCI device 0000:00:11.0 is not available 1970/01/01 00:09:50 USB emulation: enabled 1970/01/01 00:09:50 hci packet injection: /dev/vhci does not exist 1970/01/01 00:09:50 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:09:50 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:09:50 fetching corpus: 0, signal 0/2000 (executing program) 1970/01/01 00:09:56 fetching corpus: 50, signal 38515/41932 (executing program) 1970/01/01 00:09:59 fetching corpus: 100, signal 48578/53526 (executing program) 1970/01/01 00:10:02 fetching corpus: 150, signal 56568/62929 (executing program) 1970/01/01 00:10:05 fetching corpus: 200, signal 63279/70973 (executing program) 1970/01/01 00:10:08 fetching corpus: 250, signal 68276/77252 (executing program) 1970/01/01 00:10:10 fetching corpus: 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fetching corpus: 13256, signal 267850/271429 (executing program) 1970/01/01 00:21:05 fetching corpus: 13306, signal 268074/271429 (executing program) 1970/01/01 00:21:08 fetching corpus: 13356, signal 268380/271429 (executing program) 1970/01/01 00:21:11 fetching corpus: 13405, signal 268711/271429 (executing program) 1970/01/01 00:21:12 fetching corpus: 13426, signal 268826/271431 (executing program) 1970/01/01 00:21:12 fetching corpus: 13426, signal 268828/271433 (executing program) 1970/01/01 00:21:12 fetching corpus: 13426, signal 268828/271433 (executing program) 1970/01/01 00:22:53 starting 2 fuzzer processes 00:22:53 executing program 0: r0 = socket$inet_sctp(0x2, 0x1, 0x84) getsockopt$inet_sctp_SCTP_STATUS(r0, 0x84, 0x1c, 0x0, &(0x7f00000000c0)) 00:22:53 executing program 1: r0 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r0, &(0x7f0000001f80)={0x0, 0x0, &(0x7f0000001ac0)={&(0x7f0000001e40)={0x2, 0x16, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, [@sadb_x_policy={0x8, 0x12, 0x0, 0x0, 0x0, 0x0, 0x0, {0x6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @in=@broadcast, @in=@private}}]}, 0x50}}, 0x0) [ 1401.449231][ C0] ================================================================== [ 1401.452530][ C0] BUG: KASAN: use-after-free in walk_stackframe+0x11c/0x260 [ 1401.453802][ C0] Read of size 8 at addr ffffaf800f933f70 by task syz-executor.0/2052 [ 1401.455317][ C0] [ 1401.457512][ C0] CPU: 0 PID: 2052 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1401.459627][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1401.460919][ C0] Call Trace: [ 1401.461945][ C0] [] dump_backtrace+0x2e/0x3c [ 1401.463407][ C0] [] show_stack+0x34/0x40 [ 1401.464675][ C0] [] dump_stack_lvl+0xe4/0x150 [ 1401.466234][ C0] [] print_address_description.constprop.0+0x2a/0x330 [ 1401.469402][ C0] [] kasan_report+0x184/0x1e0 [ 1401.470818][ C0] [] __asan_load8+0x6e/0x96 [ 1401.472162][ C0] [] walk_stackframe+0x11c/0x260 [ 1401.473689][ C0] [] arch_stack_walk+0x2c/0x3c [ 1401.475022][ C0] [] stack_trace_save+0xa6/0xd8 [ 1401.477276][ C0] [ 1401.478108][ C0] Allocated by task 1102416563: [ 1401.479110][ C0] (stack is not available) [ 1401.479965][ C0] [ 1401.480668][ C0] Last potentially related work creation: [ 1401.481678][ C0] ------------[ cut here ]------------ [ 1401.482678][ C0] slab index 1189544 out of bounds (290) for stack id 845226a8 [ 1401.487124][ C0] WARNING: CPU: 0 PID: 2052 at lib/stackdepot.c:304 stack_depot_print+0x66/0x70 [ 1401.488968][ C0] Modules linked in: [ 1401.490180][ C0] CPU: 0 PID: 2052 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1401.491729][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1401.492714][ C0] epc : stack_depot_print+0x66/0x70 [ 1401.493995][ C0] ra : stack_depot_print+0x66/0x70 [ 1401.495571][ C0] epc : ffffffff80c00b8a ra : ffffffff80c00b8a sp : ffffaf800f933e30 [ 1401.497536][ C0] gp : ffffffff85863ac0 tp : ffffaf800bc68000 t0 : ffffffff86bcb657 [ 1401.498753][ C0] t1 : fffff5ef0b53910c t2 : 0000000000000000 s0 : ffffaf800f933e40 [ 1401.500002][ C0] s1 : ffffaf807aaaa658 a0 : 000000000000003c a1 : 00000000000f0000 [ 1401.501293][ C0] a2 : 0000000000000504 a3 : ffffffff8012252a a4 : 7078d29d40a5b600 [ 1401.502486][ C0] a5 : 7078d29d40a5b600 a6 : 0000000000f00000 a7 : ffffaf805a9c8863 [ 1401.503719][ C0] s2 : ffffaf800f933f70 s3 : ffffaf800723e8c0 s4 : ffffaf800f933f00 [ 1401.505060][ C0] s5 : ffffaf800f933fc0 s6 : 0000000000003fff s7 : ffffaf800f933f10 [ 1401.506909][ C0] s8 : 0000000000400000 s9 : ffffffffffffc000 s10: ffffaf800f933fe0 [ 1401.508211][ C0] s11: 0000000000000008 t3 : fffffffff3f3f300 t4 : fffff5ef0b53910c [ 1401.509468][ C0] t5 : fffff5ef0b53910d t6 : ffffaf800f933938 [ 1401.510611][ C0] status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003 [ 1401.512081][ C0] [] print_address_description.constprop.0+0x2fc/0x330 [ 1401.513744][ C0] [] kasan_report+0x184/0x1e0 [ 1401.515245][ C0] [] __asan_load8+0x6e/0x96 [ 1401.517014][ C0] [] walk_stackframe+0x11c/0x260 [ 1401.518478][ C0] [] arch_stack_walk+0x2c/0x3c [ 1401.519799][ C0] [] stack_trace_save+0xa6/0xd8 [ 1401.521241][ C0] irq event stamp: 34385 [ 1401.522103][ C0] hardirqs last enabled at (34384): [] _raw_spin_unlock_irqrestore+0x68/0x98 [ 1401.523730][ C0] hardirqs last disabled at (34385): [] _raw_spin_lock_irqsave+0x60/0x62 [ 1401.525734][ C0] softirqs last enabled at (34276): [] __do_softirq+0x618/0x8fc [ 1401.527396][ C0] softirqs last disabled at (34287): [] __irq_exit_rcu+0x142/0x1f8 [ 1401.528977][ C0] ---[ end trace 0000000000000000 ]--- [ 1401.530420][ C0] [ 1401.531189][ C0] Second to last potentially related work creation: [ 1401.532187][ C0] ------------[ cut here ]------------ [ 1401.533059][ C0] slab index 2097151 out of bounds (290) for stack id ffffffff [ 1401.536783][ C0] WARNING: CPU: 0 PID: 2052 at lib/stackdepot.c:304 stack_depot_print+0x66/0x70 [ 1401.538437][ C0] Modules linked in: [ 1401.539599][ C0] CPU: 0 PID: 2052 Comm: syz-executor.0 Tainted: G W 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1401.541277][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1401.542237][ C0] epc : stack_depot_print+0x66/0x70 [ 1401.543450][ C0] ra : stack_depot_print+0x66/0x70 [ 1401.544637][ C0] epc : ffffffff80c00b8a ra : ffffffff80c00b8a sp : ffffaf800f933e30 [ 1401.546272][ C0] gp : ffffffff85863ac0 tp : ffffaf800bc68000 t0 : ffffffff86bcb657 [ 1401.547595][ C0] t1 : fffff5ef0b53910c t2 : 0000000000000000 s0 : ffffaf800f933e40 [ 1401.548751][ C0] s1 : ffffaf807aaaa658 a0 : 000000000000003c a1 : 00000000000f0000 [ 1401.549934][ C0] a2 : 0000000000000504 a3 : ffffffff8012252a a4 : 7078d29d40a5b600 [ 1401.551137][ C0] a5 : 7078d29d40a5b600 a6 : 0000000000f00000 a7 : ffffaf805a9c8863 [ 1401.552374][ C0] s2 : ffffaf800f933f70 s3 : ffffaf800723e8c0 s4 : ffffaf800f933f00 [ 1401.553628][ C0] s5 : ffffaf800f933fc0 s6 : 0000000000003fff s7 : ffffaf800f933f10 [ 1401.555027][ C0] s8 : 0000000000400000 s9 : ffffffffffffc000 s10: ffffaf800f933fe0 [ 1401.557041][ C0] s11: 0000000000000008 t3 : fffffffff3f3f300 t4 : fffff5ef0b53910c [ 1401.558392][ C0] t5 : fffff5ef0b53910d t6 : ffffaf800f933938 [ 1401.559507][ C0] status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003 [ 1401.560855][ C0] [] print_address_description.constprop.0+0x2ae/0x330 [ 1401.562520][ C0] [] kasan_report+0x184/0x1e0 [ 1401.563894][ C0] [] __asan_load8+0x6e/0x96 [ 1401.565350][ C0] [] walk_stackframe+0x11c/0x260 [ 1401.567199][ C0] [] arch_stack_walk+0x2c/0x3c [ 1401.568514][ C0] [] stack_trace_save+0xa6/0xd8 [ 1401.569830][ C0] irq event stamp: 34385 [ 1401.570657][ C0] hardirqs last enabled at (34384): [] _raw_spin_unlock_irqrestore+0x68/0x98 [ 1401.572257][ C0] hardirqs last disabled at (34385): [] _raw_spin_lock_irqsave+0x60/0x62 [ 1401.573796][ C0] softirqs last enabled at (34276): [] __do_softirq+0x618/0x8fc [ 1401.575713][ C0] softirqs last disabled at (34287): [] __irq_exit_rcu+0x142/0x1f8 [ 1401.577625][ C0] ---[ end trace 0000000000000000 ]--- [ 1401.578673][ C0] [ 1401.579397][ C0] The buggy address belongs to the object at ffffaf800f933f00 [ 1401.579397][ C0] which belongs to the cache cred_jar of size 192 [ 1401.581121][ C0] The buggy address is located 112 bytes inside of [ 1401.581121][ C0] 192-byte region [ffffaf800f933f00, ffffaf800f933fc0) [ 1401.582802][ C0] The buggy address belongs to the page: [ 1401.584204][ C0] page:ffffaf807aaaa658 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8fb33 [ 1401.585813][ C0] flags: 0x8800000200(slab|section=17|node=0|zone=0) [ 1401.588427][ C0] raw: 0000008800000200 0000000000000000 0000000000000122 ffffaf800723e8c0 [ 1401.589779][ C0] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 1401.590927][ C0] raw: 00000000000007ff [ 1401.591950][ C0] page dumped because: kasan: bad access detected [ 1401.593571][ C0] page_owner tracks the page as allocated [ 1401.594992][ C0] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 2261, ts 1399129199100, free_ts 1398154369800 [ 1401.597213][ C0] __set_page_owner+0x48/0x136 [ 1401.598396][ C0] post_alloc_hook+0xd0/0x10a [ 1401.599508][ C0] get_page_from_freelist+0x8da/0x12d8 [ 1401.600688][ C0] __alloc_pages+0x150/0x3b6 [ 1401.601779][ C0] alloc_pages+0x132/0x2a6 [ 1401.602928][ C0] alloc_slab_page.constprop.0+0xc2/0xfa [ 1401.604111][ C0] new_slab+0x76/0x2cc [ 1401.605393][ C0] ___slab_alloc+0x56e/0x918 [ 1401.606963][ C0] __slab_alloc.constprop.0+0x50/0x8c [ 1401.608176][ C0] kmem_cache_alloc+0x39c/0x3de [ 1401.609364][ C0] prepare_creds+0x44/0x5b2 [ 1401.610503][ C0] prepare_exec_creds+0x1a/0xe2 [ 1401.611737][ C0] bprm_execve+0xda/0x1140 [ 1401.612880][ C0] kernel_execve+0x204/0x288 [ 1401.614025][ C0] call_usermodehelper_exec_async+0x1c0/0x2dc [ 1401.615818][ C0] ret_from_exception+0x0/0x10 [ 1401.617533][ C0] page last free stack trace: [ 1401.618412][ C0] __reset_page_owner+0x4a/0xea [ 1401.619615][ C0] free_pcp_prepare+0x29c/0x45e [ 1401.620761][ C0] free_unref_page+0x6a/0x31e [ 1401.621967][ C0] __free_pages+0xe2/0x112 [ 1401.623077][ C0] __free_slab+0x122/0x27c [ 1401.624211][ C0] discard_slab+0x4c/0x7a [ 1401.625727][ C0] __slab_free+0x20a/0x29c [ 1401.627297][ C0] ___cache_free+0x17c/0x354 [ 1401.628474][ C0] qlist_free_all+0x7c/0x132 [ 1401.629547][ C0] kasan_quarantine_reduce+0x14c/0x1c8 [ 1401.630692][ C0] __kasan_slab_alloc+0x5c/0x98 [ 1401.631891][ C0] __kmalloc+0x156/0x318 [ 1401.633019][ C0] tomoyo_realpath_from_path+0x9c/0x3f4 [ 1401.634230][ C0] tomoyo_path_perm+0x1fc/0x3a8 [ 1401.635708][ C0] tomoyo_inode_getattr+0x1e/0x28 [ 1401.637338][ C0] security_inode_getattr+0x82/0xc6 [ 1401.638718][ C0] [ 1401.639449][ C0] Memory state around the buggy address: [ 1401.640720][ C0] ffffaf800f933e00: fa fb fb fb 00 00 00 00 00 00 00 00 00 00 00 00 [ 1401.641943][ C0] ffffaf800f933e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 1401.643133][ C0] >ffffaf800f933f00: 00 00 00 00 00 00 00 00 fb fb fb fb fb fb fb fb [ 1401.644242][ C0] ^ [ 1401.645985][ C0] ffffaf800f933f80: fb fb fb fb fb fb fb fb f1 f1 f1 f1 00 00 00 f3 [ 1401.647899][ C0] ffffaf800f934000: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 [ 1401.649199][ C0] ================================================================== [ 1401.650304][ C0] Disabling lock debugging due to kernel taint [ 1401.653716][ T2052] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 1401.654953][ T2052] CPU: 0 PID: 2052 Comm: syz-executor.0 Tainted: G B W 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1401.656337][ T2052] Hardware name: riscv-virtio,qemu (DT) [ 1401.657094][ T2052] Call Trace: [ 1401.657761][ T2052] [] dump_backtrace+0x2e/0x3c [ 1401.658975][ T2052] [] show_stack+0x34/0x40 [ 1401.660017][ T2052] [] dump_stack_lvl+0xe4/0x150 [ 1401.661354][ T2052] [] dump_stack+0x1c/0x24 [ 1401.662533][ T2052] [] panic+0x24a/0x634 [ 1401.663578][ T2052] [] schedule+0x0/0x14c [ 1401.664630][ T2052] [] preempt_schedule_irq+0x4a/0x13e [ 1401.666374][ T2052] [] resume_kernel+0x16/0x18 [ 1401.667908][ T2052] SMP: stopping secondary CPUs [ 1401.670362][ T2052] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:18:44 Registers: info registers vcpu 0 pc ffffffff80dc337e mhartid 0000000000000000 mstatus 00000000000000a0 mip 00000000000000a0 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80475986 sepc ffffffff82afb968 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80dc337e x2/sp ffffaf800f933940 x3/gp ffffffff85863ac0 x4/tp ffffaf800bc68000 x5/t0 ffffffff86bcb657 x6/t1 7078d29d40a5b600 x7/t2 0000000000000000 x8/s0 ffffaf800f933970 x9/s1 ffffffff86e58900 x10/a0 ffffffff86e58948 x11/a1 ffff8f800066c000 x12/a2 1ffffffff0dcb129 x13/a3 ffffffff80dc337e x14/a4 0000000000000000 x15/a5 ffffffff86e58948 x16/a6 ffffffff86e589f1 x17/a7 ffffffff80dcc9fe x18/s2 ffff8f800066c001 x19/s3 0000000000000000 x20/s4 ffffffff86e58900 x21/s5 ffffffff86e58b70 x22/s6 ffffffff86e58950 x23/s7 0000000000000000 x24/s8 ffffffff8588c220 x25/s9 ffffffff86e58958 x26/s10 ffffffff858655c0 x27/s11 0000000000000000 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 1ffff5f001f266d8 x31/t6 ffffffff86bcb657 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 00000000800032b4 mhartid 0000000000000001 mstatus 0000000000000822 mip 0000000000000080 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80119b52 sepc 00007fffa3ddd264 mcause 8000000000000007 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra 00000000800005cc x2/sp 0000000080016e78 x3/gp ffffffff85863ac0 x4/tp ffffaf8009c1e100 x5/t0 0000000000000822 x6/t1 7078d29d40a5b600 x7/t2 ffffffffffffffff x8/s0 0000000080016ee8 x9/s1 8000000000000007 x10/a0 0000000080016ee8 x11/a1 0000000000000003 x12/a2 1ffff5f001952193 x13/a3 ffffffff80119b52 x14/a4 0000000000000000 x15/a5 ffffaf800ca90c98 x16/a6 0000000000f00000 x17/a7 ffffffff826e6226 x18/s2 0000000080016ee8 x19/s3 ffffaf8009c1e100 x20/s4 ffffaf800ca90ca8 x21/s5 ffffaf800ca90ca0 x22/s6 ffffaf800c1af960 x23/s7 ffffaf800c1afb00 x24/s8 0000000000000000 x25/s9 0000000000004000 x26/s10 0000000000000040 x27/s11 0000000000000001 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 1ffff5f001835eb4 x31/t6 0000000003618e39 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