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Merged
merged 1,314 commits into from
Jul 27, 2024

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@jwk404 jwk404 commented Jul 26, 2024

Conflicts

  • debian.master/changelog
  • debian.master/tracking-bug
  • debian.oracle-5.15/changelog
  • debian.oracle-5.15/dkms-versions
  • debian.oracle-5.15/reconstruct
  • debian.oracle-5.15/tracking-bug
  • debian.oracle/changelog
  • debian.oracle/dkms-versions
  • debian.oracle/reconstruct
  • debian.oracle/tracking-bug
    Take upstream
  • debian.master/dkms-versions
    Take upstream version of zfs, and remove iwl and v4l2 lines
  • debian.oracle-5.15/config/annotations
    Take ours, which doesn't specify arm64 arch
  • fs/nfsd/filecache.c
    This file was extensively reworked upstream in a37f08b, 43d1d00, c658797, 12ece15 and d66bb42.
    Taking the upstream version of all changes.
  • fs/nfsd/state.h
    In DLPX-82827, we bumped NFSD_MAX_OPS_PER_COMPOUND from 16 to 40.
    Upstream just bumped it to 50 for the same reason. Take upstream.

Testing Done

http://selfservice.jenkins.delphix.com/job/appliance-build-orchestrator-pre-push/9007/
The ZFS failures were only in zloop

Cory Todd and others added 30 commits June 21, 2024 21:02
BugLink: https://bugs.launchpad.net/bugs/2018438

    This has been removed by stable completely. There is a new option to
    load late which is disabled (MICROCODE_LOAD_LATE).

    [Replaced old config update by new annotations update]
    Signed-off-by: Stefan Bader <[email protected]>

Copied from master

Signed-off-by: Cory Todd <[email protected]>
Ignore: yes
Signed-off-by: Cory Todd <[email protected]>
Ignore: yes
Signed-off-by: Cory Todd <[email protected]>
Ignore: yes
Signed-off-by: Cory Todd <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2002381

Signed-off-by: Khalid Elmously <[email protected]>
Acked-by: Tim Gardner <[email protected]>
Acked-by: Cengiz Can <[email protected]>
Signed-off-by: Khalid Elmously <[email protected]>
Ignore: yes
Signed-off-by: Cory Todd <[email protected]>
Sync with master.

Ignore:yes
Signed-off-by: Cory Todd <[email protected]>
Ignore: yes
Signed-off-by: Cory Todd <[email protected]>
Sync with master.

Ignore:yes
Signed-off-by: Cory Todd <[email protected]>
Ignore: yes
Signed-off-by: Thibault Ferrante <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2035217
Properties: no-test-build
Signed-off-by: Thibault Ferrante <[email protected]>
Ignore: yes
Signed-off-by: Noah Wager <[email protected]>
Portia Stephens and others added 22 commits June 25, 2024 16:19
Ignore: yes
Signed-off-by: Roger Knecht <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2059675
Properties: no-test-build
Signed-off-by: Roger Knecht <[email protected]>
Ignore: yes
Signed-off-by: Roxana Nicolescu <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2061486
Properties: no-test-build
Signed-off-by: Roxana Nicolescu <[email protected]>
Ignore: yes
Signed-off-by: Stefan Bader <[email protected]>
Ignore: yes
Signed-off-by: Portia Stephens <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2063753
Properties: no-test-build
Signed-off-by: Portia Stephens <[email protected]>
Ignore: yes
Signed-off-by: Guoqing Jiang <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2068231
Properties: no-test-build
Signed-off-by: Guoqing Jiang <[email protected]>
Ignore: yes
Signed-off-by: Guoqing Jiang <[email protected]>
BugLink: https://bugs.launchpad.net/bugs/2068385
Properties: no-test-build
Signed-off-by: Guoqing Jiang <[email protected]>
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Nice, looks like you managed to remove a bit up upstream divergence!

@jwk404 jwk404 merged commit f3bf5d0 into develop Jul 27, 2024
3 checks passed
jwk404 pushed a commit that referenced this pull request Jul 27, 2024
BugLink: https://bugs.launchpad.net/bugs/2065805

commit ee53437 upstream.

Rafael reports that on a system with LX2160A and Marvell DSA switches,
if a reboot occurs while the DSA master (dpaa2-eth) is up, the following
panic can be seen:

systemd-shutdown[1]: Rebooting.
Unable to handle kernel paging request at virtual address 00a0000800000041
[00a0000800000041] address between user and kernel address ranges
Internal error: Oops: 96000004 [#1] PREEMPT SMP
CPU: 6 PID: 1 Comm: systemd-shutdow Not tainted 5.16.5-00042-g8f5585009b24 #32
pc : dsa_slave_netdevice_event+0x130/0x3e4
lr : raw_notifier_call_chain+0x50/0x6c
Call trace:
 dsa_slave_netdevice_event+0x130/0x3e4
 raw_notifier_call_chain+0x50/0x6c
 call_netdevice_notifiers_info+0x54/0xa0
 __dev_close_many+0x50/0x130
 dev_close_many+0x84/0x120
 unregister_netdevice_many+0x130/0x710
 unregister_netdevice_queue+0x8c/0xd0
 unregister_netdev+0x20/0x30
 dpaa2_eth_remove+0x68/0x190
 fsl_mc_driver_remove+0x20/0x5c
 __device_release_driver+0x21c/0x220
 device_release_driver_internal+0xac/0xb0
 device_links_unbind_consumers+0xd4/0x100
 __device_release_driver+0x94/0x220
 device_release_driver+0x28/0x40
 bus_remove_device+0x118/0x124
 device_del+0x174/0x420
 fsl_mc_device_remove+0x24/0x40
 __fsl_mc_device_remove+0xc/0x20
 device_for_each_child+0x58/0xa0
 dprc_remove+0x90/0xb0
 fsl_mc_driver_remove+0x20/0x5c
 __device_release_driver+0x21c/0x220
 device_release_driver+0x28/0x40
 bus_remove_device+0x118/0x124
 device_del+0x174/0x420
 fsl_mc_bus_remove+0x80/0x100
 fsl_mc_bus_shutdown+0xc/0x1c
 platform_shutdown+0x20/0x30
 device_shutdown+0x154/0x330
 __do_sys_reboot+0x1cc/0x250
 __arm64_sys_reboot+0x20/0x30
 invoke_syscall.constprop.0+0x4c/0xe0
 do_el0_svc+0x4c/0x150
 el0_svc+0x24/0xb0
 el0t_64_sync_handler+0xa8/0xb0
 el0t_64_sync+0x178/0x17c

It can be seen from the stack trace that the problem is that the
deregistration of the master causes a dev_close(), which gets notified
as NETDEV_GOING_DOWN to dsa_slave_netdevice_event().
But dsa_switch_shutdown() has already run, and this has unregistered the
DSA slave interfaces, and yet, the NETDEV_GOING_DOWN handler attempts to
call dev_close_many() on those slave interfaces, leading to the problem.

The previous attempt to avoid the NETDEV_GOING_DOWN on the master after
dsa_switch_shutdown() was called seems improper. Unregistering the slave
interfaces is unnecessary and unhelpful. Instead, after the slaves have
stopped being uppers of the DSA master, we can now reset to NULL the
master->dsa_ptr pointer, which will make DSA start ignoring all future
notifier events on the master.

Fixes: 0650bf5 ("net: dsa: be compatible with masters which unregister on shutdown")
Reported-by: Rafael Richter <[email protected]>
Signed-off-by: Vladimir Oltean <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Cc: [email protected]
Cc: Vladimir Oltean <[email protected]>
Cc: Paolo Abeni <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Manuel Diewald <[email protected]>
Signed-off-by: Roxana Nicolescu <[email protected]>
@jwk404 jwk404 deleted the dlpx/pr/jwk404/DLPX-91745 branch July 27, 2024 12:38
delphix-devops-bot pushed a commit that referenced this pull request Sep 19, 2024
BugLink: https://bugs.launchpad.net/bugs/2075170

[ Upstream commit 61cf1c739f08190a4cbf047b9fbb192a94d87e3f ]

KMSAN reported uninit-value access in raw_lookup() [1]. Diag for raw
sockets uses the pad field in struct inet_diag_req_v2 for the
underlying protocol. This field corresponds to the sdiag_raw_protocol
field in struct inet_diag_req_raw.

inet_diag_get_exact_compat() converts inet_diag_req to
inet_diag_req_v2, but leaves the pad field uninitialized. So the issue
occurs when raw_lookup() accesses the sdiag_raw_protocol field.

Fix this by initializing the pad field in
inet_diag_get_exact_compat(). Also, do the same fix in
inet_diag_dump_compat() to avoid the similar issue in the future.

[1]
BUG: KMSAN: uninit-value in raw_lookup net/ipv4/raw_diag.c:49 [inline]
BUG: KMSAN: uninit-value in raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71
 raw_lookup net/ipv4/raw_diag.c:49 [inline]
 raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71
 raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99
 inet_diag_cmd_exact+0x7d9/0x980
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]
 inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282
 netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564
 sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x332/0x3d0 net/socket.c:745
 ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639
 __sys_sendmsg net/socket.c:2668 [inline]
 __do_sys_sendmsg net/socket.c:2677 [inline]
 __se_sys_sendmsg net/socket.c:2675 [inline]
 __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675
 x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 raw_sock_get+0x650/0x800 net/ipv4/raw_diag.c:71
 raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99
 inet_diag_cmd_exact+0x7d9/0x980
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]
 inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282
 netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564
 sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x332/0x3d0 net/socket.c:745
 ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639
 __sys_sendmsg net/socket.c:2668 [inline]
 __do_sys_sendmsg net/socket.c:2677 [inline]
 __se_sys_sendmsg net/socket.c:2675 [inline]
 __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675
 x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable req.i created at:
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1396 [inline]
 inet_diag_rcv_msg_compat+0x2a6/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282

CPU: 1 PID: 8888 Comm: syz-executor.6 Not tainted 6.10.0-rc4-00217-g35bb670d65fc #32
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014

Fixes: 432490f ("net: ip, diag -- Add diag interface for raw sockets")
Reported-by: syzkaller <[email protected]>
Signed-off-by: Shigeru Yoshida <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Manuel Diewald <[email protected]>
Signed-off-by: Stefan Bader <[email protected]>
delphix-devops-bot pushed a commit that referenced this pull request Feb 7, 2025
BugLink: https://bugs.launchpad.net/bugs/2077600

[ Upstream commit 61cf1c739f08190a4cbf047b9fbb192a94d87e3f ]

KMSAN reported uninit-value access in raw_lookup() [1]. Diag for raw
sockets uses the pad field in struct inet_diag_req_v2 for the
underlying protocol. This field corresponds to the sdiag_raw_protocol
field in struct inet_diag_req_raw.

inet_diag_get_exact_compat() converts inet_diag_req to
inet_diag_req_v2, but leaves the pad field uninitialized. So the issue
occurs when raw_lookup() accesses the sdiag_raw_protocol field.

Fix this by initializing the pad field in
inet_diag_get_exact_compat(). Also, do the same fix in
inet_diag_dump_compat() to avoid the similar issue in the future.

[1]
BUG: KMSAN: uninit-value in raw_lookup net/ipv4/raw_diag.c:49 [inline]
BUG: KMSAN: uninit-value in raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71
 raw_lookup net/ipv4/raw_diag.c:49 [inline]
 raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71
 raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99
 inet_diag_cmd_exact+0x7d9/0x980
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]
 inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282
 netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564
 sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x332/0x3d0 net/socket.c:745
 ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639
 __sys_sendmsg net/socket.c:2668 [inline]
 __do_sys_sendmsg net/socket.c:2677 [inline]
 __se_sys_sendmsg net/socket.c:2675 [inline]
 __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675
 x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 raw_sock_get+0x650/0x800 net/ipv4/raw_diag.c:71
 raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99
 inet_diag_cmd_exact+0x7d9/0x980
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]
 inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282
 netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564
 sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x332/0x3d0 net/socket.c:745
 ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639
 __sys_sendmsg net/socket.c:2668 [inline]
 __do_sys_sendmsg net/socket.c:2677 [inline]
 __se_sys_sendmsg net/socket.c:2675 [inline]
 __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675
 x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable req.i created at:
 inet_diag_get_exact_compat net/ipv4/inet_diag.c:1396 [inline]
 inet_diag_rcv_msg_compat+0x2a6/0x530 net/ipv4/inet_diag.c:1426
 sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282

CPU: 1 PID: 8888 Comm: syz-executor.6 Not tainted 6.10.0-rc4-00217-g35bb670d65fc #32
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014

Fixes: 432490f ("net: ip, diag -- Add diag interface for raw sockets")
Reported-by: syzkaller <[email protected]>
Signed-off-by: Shigeru Yoshida <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Portia Stephens <[email protected]>
Signed-off-by: Roxana Nicolescu <[email protected]>
delphix-devops-bot pushed a commit that referenced this pull request Mar 26, 2025
commit 3802f73bd80766d70f319658f334754164075bc3 upstream.

blk_mq_clear_flush_rq_mapping() is not called during scsi probe, by
checking blk_queue_init_done(). However, QUEUE_FLAG_INIT_DONE is cleared
in del_gendisk by commit aec89dc ("block: keep q_usage_counter in
atomic mode after del_gendisk"), hence for disk like scsi, following
blk_mq_destroy_queue() will not clear flush rq from tags->rqs[] as well,
cause following uaf that is found by our syzkaller for v6.6:

==================================================================
BUG: KASAN: slab-use-after-free in blk_mq_find_and_get_req+0x16e/0x1a0 block/blk-mq-tag.c:261
Read of size 4 at addr ffff88811c969c20 by task kworker/1:2H/224909

CPU: 1 PID: 224909 Comm: kworker/1:2H Not tainted 6.6.0-ga836a5060850 #32
Workqueue: kblockd blk_mq_timeout_work
Call Trace:

__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x91/0xf0 lib/dump_stack.c:106
print_address_description.constprop.0+0x66/0x300 mm/kasan/report.c:364
print_report+0x3e/0x70 mm/kasan/report.c:475
kasan_report+0xb8/0xf0 mm/kasan/report.c:588
blk_mq_find_and_get_req+0x16e/0x1a0 block/blk-mq-tag.c:261
bt_iter block/blk-mq-tag.c:288 [inline]
__sbitmap_for_each_set include/linux/sbitmap.h:295 [inline]
sbitmap_for_each_set include/linux/sbitmap.h:316 [inline]
bt_for_each+0x455/0x790 block/blk-mq-tag.c:325
blk_mq_queue_tag_busy_iter+0x320/0x740 block/blk-mq-tag.c:534
blk_mq_timeout_work+0x1a3/0x7b0 block/blk-mq.c:1673
process_one_work+0x7c4/0x1450 kernel/workqueue.c:2631
process_scheduled_works kernel/workqueue.c:2704 [inline]
worker_thread+0x804/0xe40 kernel/workqueue.c:2785
kthread+0x346/0x450 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:293

Allocated by task 942:
kasan_save_stack+0x22/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc mm/kasan/common.c:383 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:380
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1007 [inline]
__kmalloc_node+0x69/0x170 mm/slab_common.c:1014
kmalloc_node include/linux/slab.h:620 [inline]
kzalloc_node include/linux/slab.h:732 [inline]
blk_alloc_flush_queue+0x144/0x2f0 block/blk-flush.c:499
blk_mq_alloc_hctx+0x601/0x940 block/blk-mq.c:3788
blk_mq_alloc_and_init_hctx+0x27f/0x330 block/blk-mq.c:4261
blk_mq_realloc_hw_ctxs+0x488/0x5e0 block/blk-mq.c:4294
blk_mq_init_allocated_queue+0x188/0x860 block/blk-mq.c:4350
blk_mq_init_queue_data block/blk-mq.c:4166 [inline]
blk_mq_init_queue+0x8d/0x100 block/blk-mq.c:4176
scsi_alloc_sdev+0x843/0xd50 drivers/scsi/scsi_scan.c:335
scsi_probe_and_add_lun+0x77c/0xde0 drivers/scsi/scsi_scan.c:1189
__scsi_scan_target+0x1fc/0x5a0 drivers/scsi/scsi_scan.c:1727
scsi_scan_channel drivers/scsi/scsi_scan.c:1815 [inline]
scsi_scan_channel+0x14b/0x1e0 drivers/scsi/scsi_scan.c:1791
scsi_scan_host_selected+0x2fe/0x400 drivers/scsi/scsi_scan.c:1844
scsi_scan+0x3a0/0x3f0 drivers/scsi/scsi_sysfs.c:151
store_scan+0x2a/0x60 drivers/scsi/scsi_sysfs.c:191
dev_attr_store+0x5c/0x90 drivers/base/core.c:2388
sysfs_kf_write+0x11c/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3fc/0x610 fs/kernfs/file.c:338
call_write_iter include/linux/fs.h:2083 [inline]
new_sync_write+0x1b4/0x2d0 fs/read_write.c:493
vfs_write+0x76c/0xb00 fs/read_write.c:586
ksys_write+0x127/0x250 fs/read_write.c:639
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x70/0x120 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x78/0xe2

Freed by task 244687:
kasan_save_stack+0x22/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x50 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
__kasan_slab_free+0x12a/0x1b0 mm/kasan/common.c:244
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1815 [inline]
slab_free_freelist_hook mm/slub.c:1841 [inline]
slab_free mm/slub.c:3807 [inline]
__kmem_cache_free+0xe4/0x520 mm/slub.c:3820
blk_free_flush_queue+0x40/0x60 block/blk-flush.c:520
blk_mq_hw_sysfs_release+0x4a/0x170 block/blk-mq-sysfs.c:37
kobject_cleanup+0x136/0x410 lib/kobject.c:689
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x119/0x140 lib/kobject.c:737
blk_mq_release+0x24f/0x3f0 block/blk-mq.c:4144
blk_free_queue block/blk-core.c:298 [inline]
blk_put_queue+0xe2/0x180 block/blk-core.c:314
blkg_free_workfn+0x376/0x6e0 block/blk-cgroup.c:144
process_one_work+0x7c4/0x1450 kernel/workqueue.c:2631
process_scheduled_works kernel/workqueue.c:2704 [inline]
worker_thread+0x804/0xe40 kernel/workqueue.c:2785
kthread+0x346/0x450 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:293

Other than blk_mq_clear_flush_rq_mapping(), the flag is only used in
blk_register_queue() from initialization path, hence it's safe not to
clear the flag in del_gendisk. And since QUEUE_FLAG_REGISTERED already
make sure that queue should only be registered once, there is no need
to test the flag as well.

Fixes: 6cfeadb ("blk-mq: don't clear flush_rq from tags->rqs[]")
Depends-on: commit aec89dc ("block: keep q_usage_counter in atomic mode after del_gendisk")
Signed-off-by: Yu Kuai <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: BRUNO VERNAY <[email protected]>
Signed-off-by: Hugo SIMELIERE <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

CVE-2024-53170
(cherry picked from commit 1364a29b71c7837770f1902c49e7a6e234d72c92 linux-6.6.y)
Signed-off-by: Massimiliano Pellizzer <[email protected]>
Acked-by: Agathe Porte <[email protected]>
Acked-by: Koichiro Den <[email protected]>
Signed-off-by: Koichiro Den <[email protected]>
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