FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8158 Comm: syz-executor.2 Not tainted 6.0.0-rc1-next-20220819 #1 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8158, name: syz-executor.2 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz-executor.2/8158: #0: ffff88800cf5cfe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 #1: ffff88800e60a668 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xe3/0x12b0 irq event stamp: 1094 hardirqs last enabled at (1093): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1094): [] dump_stack_lvl+0x2e/0xb3 softirqs last enabled at (958): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (919): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 8158 Comm: syz-executor.2 Not tainted 6.0.0-rc1-next-20220819 #1 syz-executor.2[8158] cmdline: /syz-executor.2 exec 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_lvl+0x8b/0xb3 __might_resched.cold+0x222/0x26b down_read_killable+0x75/0x490 __access_remote_vm+0xac/0x6f0 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8163 Comm: syz-executor.0 Not tainted 6.0.0-rc1-next-20220819 #1 get_mm_cmdline.part.0+0x214/0x600 get_task_cmdline_kernel+0x1e9/0x230 dump_stack_print_cmdline.part.0+0x82/0x150 dump_stack_print_info+0x185/0x190 dump_stack_lvl+0x7f/0xb3 should_fail.cold+0x5/0xa copyout+0x19/0x120 _copy_to_iter+0x576/0x1430 syz-executor.0[8163] cmdline: /syz-executor.0 exec 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_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa copyout+0x19/0x120 seq_read_iter+0xdcb/0x12b0 _copy_to_iter+0x576/0x1430 seq_read+0x16d/0x210 proc_reg_read+0x22a/0x300 seq_read_iter+0xdcb/0x12b0 vfs_read+0x253/0x930 seq_read+0x16d/0x210 ksys_read+0x127/0x250 proc_reg_read+0x22a/0x300 vfs_read+0x253/0x930 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdf1ae55b19 do_syscall_64+0x3b/0x90 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 entry_SYSCALL_64_after_hwframe+0x63/0xcd RSP: 002b:00007fdf183cb188 EFLAGS: 00000246 RIP: 0033:0x7fe9853eab19 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 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fdf1af68f60 RCX: 00007fdf1ae55b19 RDX: 00000000200000e9 RSI: 0000000020000040 RDI: 0000000000000006 RSP: 002b:00007fe982960188 EFLAGS: 00000246 RBP: 00007fdf183cb1d0 R08: 0000000000000000 R09: 0000000000000000 ORIG_RAX: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc69de757f R14: 00007fdf183cb300 R15: 0000000000022000 RAX: ffffffffffffffda RBX: 00007fe9854fdf60 RCX: 00007fe9853eab19 RDX: 00000000200000e9 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007fe9829601d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdb03853bf R14: 00007fe982960300 R15: 0000000000022000 syz-executor.2[8158] cmdline: /syz-executor.2 exec 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_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa copyout+0x19/0x120 _copy_to_iter+0x576/0x1430 seq_read_iter+0xdcb/0x12b0 seq_read+0x16d/0x210 proc_reg_read+0x22a/0x300 vfs_read+0x253/0x930 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdf1ae55b19 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:00007fdf183cb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fdf1af68f60 RCX: 00007fdf1ae55b19 RDX: 00000000200000e9 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 00007fdf183cb1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc69de757f R14: 00007fdf183cb300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8185 Comm: syz-executor.0 Tainted: G W 6.0.0-rc1-next-20220819 #1 syz-executor.0[8185] cmdline: /syz-executor.0 exec 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_lvl+0x8b/0xb3 should_fail.cold+0x5/0xa _copy_to_user+0x2a/0x140 simple_read_from_buffer+0xcc/0x160 proc_fail_nth_read+0x198/0x230 vfs_read+0x253/0x930 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe98539d69c 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:00007fe982960170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00000000000001e6 RCX: 00007fe98539d69c RDX: 000000000000000f RSI: 00007fe9829601e0 RDI: 0000000000000006 RBP: 00007fe9829601d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdb03853bf R14: 00007fe982960300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 retq 32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W