general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f] CPU: 0 PID: 5874 Comm: syz-executor.4 Not tainted 5.10.45 #1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:io_sq_offload_start fs/io_uring.c:8001 [inline] RIP: 0010:io_disable_sqo_submit+0x1a9/0x220 fs/io_uring.c:8723 Code: 03 80 3c 02 00 0f 85 86 00 00 00 48 8b ab e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 5a 48 8b ad 48 01 00 00 48 85 ed 0f 84 d1 fe ff ff CPU: 1 PID: 5890 Comm: syz-executor.7 Not tainted 5.10.45 #1 RSP: 0018:ffff8880433afd70 EFLAGS: 00010212 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: RAX: dffffc0000000000 RBX: ffff888042af9000 RCX: ffffc900049fa000 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 RDX: 0000000000000029 RSI: ffffffff81837da8 RDI: 0000000000000148 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888042af93c7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888042af93c0 should_failslab+0x5/0x10 mm/slab_common.c:1194 R13: 0000000000000040 R14: ffff888042af9048 R15: ffff888042af9000 slab_pre_alloc_hook mm/slab.h:516 [inline] slab_alloc_node mm/slub.c:2813 [inline] slab_alloc mm/slub.c:2896 [inline] kmem_cache_alloc_trace+0x55/0x360 mm/slub.c:2913 FS: 00007f57d167f700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kmalloc include/linux/slab.h:552 [inline] get_mountpoint+0x143/0x3e0 fs/namespace.c:734 CR2: 00007f57d165dd80 CR3: 000000000d56c000 CR4: 0000000000350ef0 attach_recursive_mnt+0x148/0xd40 fs/namespace.c:2120 Call Trace: io_uring_create fs/io_uring.c:9513 [inline] io_uring_setup+0x15c8/0x2fe0 fs/io_uring.c:9541 graft_tree+0x187/0x210 fs/namespace.c:2243 do_add_mount+0x1cc/0x330 fs/namespace.c:2790 do_new_mount_fc fs/namespace.c:2829 [inline] do_new_mount fs/namespace.c:2883 [inline] path_mount+0x179c/0x2080 fs/namespace.c:3211 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount fs/namespace.c:3409 [inline] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f57d167f108 EFLAGS: 00000202 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 ORIG_RAX: 00000000000001a9 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RIP: 0033:0x466609 RDX: 0000000020ffd000 RSI: 00000000200001c0 RDI: 0000000000003607 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RBP: 00000000200001c0 R08: 0000000020000280 R09: 0000000020000280 RSP: 002b:00007f5624691188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 R10: 0000000020000240 R11: 0000000000000202 R12: 0000000020000280 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 R13: 0000000020ffd000 R14: 0000000020000240 R15: 0000000020ffb000 RDX: 0000000020000480 RSI: 00000000200002c0 RDI: 0000000000000000 RBP: 00007f56246911d0 R08: 00000000200004c0 R09: 0000000000000000 Modules linked in: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdb31e6a2f R14: 00007f5624691300 R15: 0000000000022000 ---[ end trace 7a67748829ce22d7 ]--- RIP: 0010:io_sq_offload_start fs/io_uring.c:8001 [inline] RIP: 0010:io_disable_sqo_submit+0x1a9/0x220 fs/io_uring.c:8723 Code: 03 80 3c 02 00 0f 85 86 00 00 00 48 8b ab e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 5a 48 8b ad 48 01 00 00 48 85 ed 0f 84 d1 fe ff ff RSP: 0018:ffff8880433afd70 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff888042af9000 RCX: ffffc900049fa000 RDX: 0000000000000029 RSI: ffffffff81837da8 RDI: 0000000000000148 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888042af93c7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888042af93c0 R13: 0000000000000040 R14: ffff888042af9048 R15: ffff888042af9000 FS: 00007f57d167f700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f57d165dd80 CR3: 000000000d56c000 CR4: 0000000000350ef0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5915 Comm: syz-executor.7 Tainted: G D 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x10 mm/slab_common.c:1194 slab_pre_alloc_hook mm/slab.h:516 [inline] slab_alloc_node mm/slub.c:2813 [inline] slab_alloc mm/slub.c:2896 [inline] kmem_cache_alloc_trace+0x55/0x360 mm/slub.c:2913 kmalloc include/linux/slab.h:552 [inline] get_mountpoint+0x143/0x3e0 fs/namespace.c:734 attach_recursive_mnt+0x148/0xd40 fs/namespace.c:2120 graft_tree+0x187/0x210 fs/namespace.c:2243 do_add_mount+0x1cc/0x330 fs/namespace.c:2790 do_new_mount_fc fs/namespace.c:2829 [inline] do_new_mount fs/namespace.c:2883 [inline] path_mount+0x179c/0x2080 fs/namespace.c:3211 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount fs/namespace.c:3409 [inline] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5624691188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000020000480 RSI: 00000000200002c0 RDI: 0000000000000000 RBP: 00007f56246911d0 R08: 00000000200004c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdb31e6a2f R14: 00007f5624691300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 5927 Comm: syz-executor.7 Tainted: G D 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 _copy_to_user+0x2e/0x180 lib/usercopy.c:29 copy_to_user include/linux/uaccess.h:200 [inline] simple_read_from_buffer+0xcc/0x160 fs/libfs.c:729 proc_fail_nth_read+0x194/0x220 fs/proc/base.c:1423 vfs_read+0x228/0x580 fs/read_write.c:494 ksys_read+0x12d/0x250 fs/read_write.c:634 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x41935c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48 RSP: 002b:00007f5624691170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000041935c RDX: 000000000000000f RSI: 00007f56246911e0 RDI: 0000000000000003 RBP: 00007f56246911d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffdb31e6a2f R14: 00007f5624691300 R15: 0000000000022000