[revert commit 9f079dda1433] [mainline] [6.8.0-rc3] [NVME] OOPS kernel crash while booting

[Tasmiya Nalatwad]

Greetings,

[revert commit 9f079dda1433] [mainline] [6.8.0-rc3] [NVME] OOPS kernel 
crash while booting to kernel

Reverting below commit fixes the problem

commit 9f079dda14339ee87d864306a9dc8c6b4e4da40b
    nvme: allow passthru cmd error logging

--- Traces ---

[   15.639835] BUG: Kernel NULL pointer dereference on read at 0x000003d8
[   15.639840] Faulting instruction address: 0xc0080000215b01dc
[   15.639845] Oops: Kernel access of bad area, sig: 11 [#1]
[   15.639849] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=8192 NUMA pSeries
[   15.639855] Modules linked in: xsk_diag bonding tls nft_compat 
nf_tables nfnetlink rfkill binfmt_misc dm_multipath dm_mod pseries_rng 
dax_pmem drm drm_panel_orientation_quirks ext4 mbcache jbd2 ibmvfc 
nd_pmem nd_btt scsi_transport_fc ibmveth nvme papr_scm bnx2x nvme_core 
t10_pi vmx_crypto libnvdimm crc64_rocksoft_generic crc64_rocksoft mdio 
crc64 libcrc32c fuse
[   15.639901] CPU: 1 PID: 3289 Comm: udevadm Not tainted 
6.8.0-rc3-auto-g99bd3cb0d12e #1
[   15.639907] Hardware name: IBM,9009-42A POWER9 (raw) 0x4e0202 
0xf000005 of:IBM,FW950.A0 (VL950_141) hv:phyp pSeries
[   15.639913] NIP:  c0080000215b01dc LR: c000000000a197bc CTR: 
c0080000215b01b8
[   15.639918] REGS: c00000006f3177f0 TRAP: 0300   Not tainted 
(6.8.0-rc3-auto-g99bd3cb0d12e)
[   15.639923] MSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 
84888480  XER: 20040000
[   15.639936] CFAR: c00000000000dbbc DAR: 00000000000003d8 DSISR: 
40000000 IRQMASK: 0
[   15.639936] GPR00: c000000000a197bc c00000006f317a90 c0080000215d8200 
c000000092810000
[   15.639936] GPR04: c0080000215d2570 c000000092810000 c000000092820000 
0000000000000000
[   15.639936] GPR08: c000000092810000 0000000000000000 0000000000010000 
0000000022888482
[   15.639936] GPR12: c0080000215b01b8 c00000000f8cf300 0000000000000000 
0000000000000000
[   15.639936] GPR16: 0000000000000000 0000000000000000 0000000000000000 
0000000000000001
[   15.639936] GPR20: 0000000000000000 0000000000400cc0 c000000086d14c28 
000000007fff0000
[   15.639936] GPR24: fffffffffffff000 0000000000000000 c000000086d14c18 
0000000000010000
[   15.639936] GPR28: c00000007509c180 c000000005bc1448 c0080000215d2570 
c000000086d14bf0
[   15.639999] NIP [c0080000215b01dc] 
nvme_io_passthru_err_log_enabled_show+0x24/0x80 [nvme_core]
[   15.640013] LR [c000000000a197bc] dev_attr_show+0x40/0xac
[   15.640020] Call Trace:
[   15.640023] [c00000006f317a90] [c00000006f317b10] 0xc00000006f317b10 
(unreliable)
[   15.640030] [c00000006f317af0] [c000000000a197bc] dev_attr_show+0x40/0xac
[   15.640037] [c00000006f317b60] [c0000000006c11a0] 
sysfs_kf_seq_show+0xcc/0x1f0
[   15.640045] [c00000006f317bf0] [c0000000006be224] 
kernfs_seq_show+0x44/0x58
[   15.640052] [c00000006f317c10] [c00000000060882c] 
seq_read_iter+0x254/0x69c
[   15.640060] [c00000006f317cf0] [c0000000006bed60] 
kernfs_fop_read_iter+0x4c/0x60
[   15.640067] [c00000006f317d10] [c0000000005bf61c] vfs_read+0x2bc/0x390
[   15.640074] [c00000006f317dc0] [c0000000005c040c] ksys_read+0x84/0x144
[   15.640081] [c00000006f317e10] [c000000000033358] 
system_call_exception+0x138/0x330
[   15.640088] [c00000006f317e50] [c00000000000d05c] 
system_call_vectored_common+0x15c/0x2ec
[   15.640096] --- interrupt: 3000 at 0x7fff87d342e4
[   15.640101] NIP:  00007fff87d342e4 LR: 0000000000000000 CTR: 
0000000000000000
[   15.640106] REGS: c00000006f317e80 TRAP: 3000   Not tainted 
(6.8.0-rc3-auto-g99bd3cb0d12e)
[   15.640110] MSR:  800000000280f033 
<SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 42884482  XER: 00000000
[   15.640126] IRQMASK: 0
[   15.640126] GPR00: 0000000000000003 00007fffea617e80 00007fff87e47200 
0000000000000003
[   15.640126] GPR04: 0000010009494f20 0000000000010008 00007fff87e40e18 
00000100094a4f20
[   15.640126] GPR08: 0000000000010008 0000000000000000 0000000000000000 
0000000000000000
[   15.640126] GPR12: 0000000000000000 00007fff88434ba0 0000000000000000 
0000000000000000
[   15.640126] GPR16: 0000000000000000 000000013e082f48 00007fffea618290 
00007fffea617ee8
[   15.640126] GPR20: 00000000003ffffe 00007fffea618108 00007fffea618110 
0000000000008000
[   15.640126] GPR24: 0000000000000000 0000000000000002 00000000003ffffe 
ffffffffffffffff
[   15.640126] GPR28: 0000000000010007 0000000000010008 0000010009494f20 
0000000000000003
[   15.640185] NIP [00007fff87d342e4] 0x7fff87d342e4
[   15.640189] LR [0000000000000000] 0x0
[   15.640193] --- interrupt: 3000
[   15.640196] Code: e8410018 00028048 00000000 3c4c0003 38428048 
7c0802a6 60000000 7c0802a6 f8010010 f821ffa1 e9230078 7ca32b78 
<892903d8> 2c090000 4082002c 3d220000
[   15.640217] ---[ end trace 0000000000000000 ]---

--
Regards,
Tasmiya Nalatwad
IBM Linux Technology Center