FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 17387 Comm: syz-executor.3 Not tainted 6.0.0-rc1-next-20220822 #1 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 17387, name: syz-executor.3 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 no locks held by syz-executor.3/17387. irq event stamp: 270 hardirqs last enabled at (269): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (270): [] dump_stack_lvl+0x2e/0xb3 softirqs last enabled at (200): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (195): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 17387 Comm: syz-executor.3 Not tainted 6.0.0-rc1-next-20220822 #1 syz-executor.3[17387] cmdline: /syz-executor.3 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 get_mm_cmdline.part.0+0x214/0x600 get_task_cmdline_kernel+0x1e9/0x230 dump_stack_print_cmdline.part.0+0x82/0x150 loop4: detected capacity change from 0 to 39 dump_stack_print_info+0x185/0x190 dump_stack_lvl+0x7f/0xb3 should_fail.cold+0x5/0xa _copy_from_user+0x2a/0x170 __do_sys_memfd_create+0x103/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0c6f662b19 FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 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:00007f0c6cbd7f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0c6f662b19 RDX: 0000000000004ffa RSI: 0000000000000000 RDI: 00007f0c6f6bc0fb RBP: 0000000000000002 R08: 00000000000027fd R09: ffffffffffffffff R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 0000000020000100 R14: 0000000000004ffa R15: 0000000020000140 loop6: detected capacity change from 0 to 39 loop2: detected capacity change from 0 to 39 loop7: detected capacity change from 0 to 39 loop0: detected capacity change from 0 to 39 syz-executor.6: attempt to access beyond end of device loop6: rw=2049, sector=40, nr_sectors = 4 limit=39 Buffer I/O error on dev loop6, logical block 10, lost async page write syz-executor.3[17387] cmdline: /syz-executor.3 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_from_user+0x2a/0x170 __do_sys_memfd_create+0x103/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0c6f662b19 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:00007f0c6cbd7f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f0c6f662b19 RDX: 0000000000004ffa RSI: 0000000000000000 RDI: 00007f0c6f6bc0fb RBP: 0000000000000002 R08: 00000000000027fd R09: ffffffffffffffff R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 0000000020000100 R14: 0000000000004ffa R15: 0000000020000140 CPU: 0 PID: 17396 Comm: syz-executor.5 Tainted: G W 6.0.0-rc1-next-20220822 #1 FAT-fs (loop4): bogus number of FAT structure FAT-fs (loop4): Can't find a valid FAT filesystem syz-executor.0: attempt to access beyond end of device loop0: rw=2049, sector=40, nr_sectors = 4 limit=39 Buffer I/O error on dev loop0, logical block 10, lost async page write syz-executor.5[17396] cmdline: /syz-executor.5 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_from_user+0x2a/0x170 __do_sys_memfd_create+0x103/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe27f835b19 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:00007fe27cdaaf48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fe27f835b19 RDX: 0000000000004ffa RSI: 0000000000000000 RDI: 00007fe27f88f0fb RBP: 0000000000000002 R08: 00000000000027fd R09: ffffffffffffffff R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 0000000020000100 R14: 0000000000004ffa R15: 0000000020000140 loop2: detected capacity change from 0 to 39 loop7: detected capacity change from 0 to 39 loop4: detected capacity change from 0 to 39 FAT-fs (loop4): bogus number of FAT structure FAT-fs (loop4): Can't find a valid FAT filesystem syz-executor.7: attempt to access beyond end of device loop7: rw=2049, sector=40, nr_sectors = 4 limit=39 Buffer I/O error on dev loop7, logical block 10, lost async page write syz-executor.2: attempt to access beyond end of device loop2: rw=2049, sector=40, nr_sectors = 4 limit=39 Buffer I/O error on dev loop2, logical block 10, lost async page write ---------------- 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